Journal articles: 'Catfish hybrid'

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Li, Shu, Qiao Yang, Maohua Li, Yue Lan, and Zhaobin Song. "Integrated miRNA and mRNA Sequencing Reveals the Sterility Mechanism in Hybrid Yellow Catfish Resulting from Pelteobagrus fulvidraco (♀) × Pelteobagrus vachelli (♂)." Animals 14, no. 11 (2024): 1586. http://dx.doi.org/10.3390/ani14111586.

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The hybrid yellow catfish exhibits advantages over pure yellow catfish in terms of fast growth, fast development, a high feeding rate, and strong immunity; additionally, it is almost sterile, thus ensuring the conservation of the genetic stock of fish populations. To investigate the sterility mechanism in hybrid yellow catfish (P. fulvidraco (♀) × P. vachelli (♂)), the mRNA and miRNA of the gonads of P. fulvidraco, P. vachelli, and a hybrid yellow catfish were analyzed to characterize the differentially expressed genes; this was carried out to help establish gene expression datasets to assist in the further determination of the mechanisms of genetic sterility in hybrid yellow catfish. In total, 1709 DEGs were identified between the hybrid and two pure yellow catfishes. A KEGG pathway analysis indicated that several genes related to reproductive functions were upregulated, including those involved in the cell cycle, progesterone-mediated oocyte maturation, and oocyte meiosis, and genes associated with ECM–receptor interaction were downregulated. The spermatogenesis-related GO genes CFAP70, RSPH6A, and TSGA10 were identified as being downregulated DEGs in the hybrid yellow catfish. Sixty-three DEmiRNAs were identified between the hybrid and the two pure yellow catfish species. The upregulated DEmiRNAs ipu-miR-194a and ipu-miR-499 were found to target the spermatogenesis-related genes CFAP70 and RSPH6A, respectively, playing a negative regulatory role, which may underscore the miRNA–mRNA regulatory mechanism of sterility in hybrid yellow catfish. The differential expression of ipu-miR-196d, ipu-miR-125b, and ipu-miR-150 and their target genes spidr, cep85, and kcnn4, implicated in reproductive processes, was verified via qRT-PCR, consistent with the transcriptome sequencing expression trends. This study provides deep insights into the mechanism of hybrid sterility in vertebrate groups, thereby contributing to achieving a better understanding and management of fish conservation related to hybrid sterility.

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Yang, Yujia, Qiang Fu, Yang Liu, et al. "Comparative transcriptome analysis reveals conserved branching morphogenesis related genes involved in chamber formation of catfish swimbladder." Physiological Genomics 50, no. 1 (2018): 67–76. http://dx.doi.org/10.1152/physiolgenomics.00089.2017.

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The swimbladder is an internal gas-filled organ in teleosts. Its major function is to regulate buoyancy. The swimbladder exhibits great variation in size, shape, and number of compartments or chambers among teleosts. However, genomic control of swimbladder variation is unknown. Channel catfish ( Ictalurus punctatus), blue catfish ( Ictalurus furcatus), and their F1 hybrids of female channel catfish × male blue catfish (C × B hybrid catfish) provide a good model in which to investigate the swimbladder morphology, because channel catfish possess a single-chambered swimbladder, whereas blue catfish possess a bichambered swimbladder; C × B hybrid catfish possess a bichambered swimbladder but with a significantly reduced posterior chamber. Here we determined the transcriptional profiles of swimbladder from channel catfish, blue catfish, and C × B hybrid catfish. We examined their transcriptomes at both the fingerling and adult stages. Through comparative transcriptome analysis, ~4,000 differentially expressed genes (DEGs) were identified. Among these DEGs, members of the Wnt signaling pathway ( wnt1, wnt2, nfatc1, rac2), Hedgehog signaling pathway ( shh), and growth factors ( fgf10, igf-1) were identified. As these genes were known to be important for branching morphogenesis of mammalian lung and of mammary glands, their association with budding of the posterior chamber primordium and progressive development of bichambered swimbladder in fish suggest that these branching morphogenesis-related genes and their functions in branching are evolutionarily conserved across a broad spectrum of species.

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Wang, Haolong, Timothy J. Bruce, Baofeng Su, Shangjia Li, Rex A. Dunham, and Xu Wang. "Environment-Dependent Heterosis and Transgressive Gene Expression in Reciprocal Hybrids between the Channel Catfish Ictalurus punctatus and the Blue Catfish Ictalurus furcatus." Biology 11, no. 1 (2022): 117. http://dx.doi.org/10.3390/biology11010117.

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The hybrid between female channel catfish (Ictalurus punctatus) and male blue catfish (Ictalurus furcatus) is superior in feed conversion, disease resistance, carcass yield, and harvestability compared to both parental species. However, heterosis and heterobeltiosis only occur in pond culture, and channel catfish grow much faster than the other genetic types in small culture units. This environment-dependent heterosis is intriguing, but the underlying genetic mechanisms are not well understood. In this study, phenotypic characterization and transcriptomic analyses were performed in the channel catfish, blue catfish, and their reciprocal F1s reared in tanks. The results showed that the channel catfish is superior in growth-related morphometrics, presumably due to significantly lower innate immune function, as investigated by reduced lysozyme activity and alternative complement activity. RNA-seq analysis revealed that genes involved in fatty acid metabolism/transport are significantly upregulated in channel catfish compared to blue catfish and hybrids, which also contributes to the growth phenotype. Interestingly, hybrids have a 40–80% elevation in blood glucose than the parental species, which can be explained by a phenomenon called transgressive expression (overexpression/underexpression in F1s than the parental species). A total of 1140 transgressive genes were identified in F1 hybrids, indicating that 8.5% of the transcriptome displayed transgressive expression. Transgressive genes upregulated in F1s are enriched for glycan degradation function, directly related to the increase in blood glucose level. This study is the first to explore molecular mechanisms of environment-dependent heterosis/heterobeltiosis in a vertebrate species and sheds light on the regulation and evolution of heterosis vs. hybrid incompatibility.

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Odin, Ramjie, Ahmed Elaswad, Karim Khalil, et al. "Combining Ability of Female Channel Catfish, Ictalurus punctatus, and Male Blue Catfish, I. furcatus, for Early Growth Performance of Their Progeny." Fishes 9, no. 4 (2024): 115. http://dx.doi.org/10.3390/fishes9040115.

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The hybrid between the female channel catfish (Ictalurus punctatus) and the male blue catfish (I. furcatus) is the best genetic type currently available for commercial catfish farming due to their superior traits. However, further genetic improvements can be achieved by selecting parents with increased combining abilities. Twenty female channel catfish and twelve male blue catfish were crossed in a partial factorial mating design, resulting in forty hybrid families. These families were evaluated for early growth in three different rearing systems, including ponds and aquaria. The early growth performance of hybrid catfish was significantly (p < 0.05) affected by the additive gene action of the female parent and the male parent. There were genotype–environment or genotype–age interactions affecting the combining abilities, both the amount and the type of genetic variation. Dam GCA was significant in all environments/ages; however, sire GCA was variable, and SCA was not significant. These findings suggest that reciprocal recurrent selection for growth could potentially improve the performance of F1 hybrid catfish.

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Xie, Minghua, Yulin Zhou, Yi Gong, et al. "Growth Superiority and Genetic Characterization of the Hybrid from Female Ussuri Catfish (Pseudobagrus ussuriensis) and Male Longsnout Catfish (Leiocassis longirostris)." Animals 14, no. 24 (2024): 3617. https://doi.org/10.3390/ani14243617.

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Crossbreeding is a traditional breeding technique and has been performed successfully in many fish species. However, distant hybridization between different genera is hard to be successful because of reproductive isolation. In this study, diploid hybrids (PL) were successfully derived from the hybridization of Ussuri catfish (Pseudobagrus ussuriensis, PU, ♀, 2n = 52) and longsnout catfish (Leiocassis longirostris, LL, ♂, 2n = 52). And the morphological data, external frame parameters, chromosomal karyotypes, DNA content measurement, mitochondrial DNA control region, and species-specific marker identification were applied to investigate the traits and genetic characterization of the PL hybrid offspring and their parents. Both quantifiable traits and shape frame parameters of the PL hybrid offspring were revealed to be intermediate between those of their parents; however, cluster analysis showed that their external morphology was more in favor of the maternal PU. The growth comparisons showed that the hybrids had significant growth advantages over maternal PU. Based on karyotype patterns, DNA contents and mitochondrial DNA, the hybrid origin and maternal inheritance of hybrid offspring were further confirmed. According to the sequence variations identified from the genome sequences of the two catfish species, one species-specific marker was developed to distinguish the PL hybrid offspring and their parents. Therefore, this study provides a successful case for intergeneric hybridization and hybrid superiority, and the PL hybrid shows promise for commercial application, pending further studies into its husbandry, health, and welfare with larger populations of fish.

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Klimuk, A. A., T. L. Kalita, A. L. Nikiforov-Nikishin, S. V. Beketov, and A. P. Minaenko. "Comparison of fish biological indicators of Clarias gariepinus hybrids grown in ras and pond farming conditions." Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries), no. 8 (August 23, 2024): 557–66. http://dx.doi.org/10.33920/sel-09-2408-04.

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To improve technologies in the field of commercial cultivation of aquaculture objects and further development of the warm-water aquaculture sector in Russia, we previously undertook breeding methods and approaches to obtain high-quality planting material for a promising commercial object — the African catfish Clarias gariepinus. This article presents, in a comparative aspect, the experience of growing hybrid offspring of African catfish, obtained from crossing two breeds — Mikhailovskaya and Tamanskaya, in a closed water supply system and in a pond farm in the Astrakhan region in the summer. It was shown that hybrid individuals of clariid catfish bred in a pond farm during the feeding period under consideration (from July to September) were characterized by a high specific growth rate and low feed ratio compared to hybrids grown in a recirculation system, respectively, 11.4% versus 9.87% and 0.96 versus 1. Also, based on the results of fishing, over two months of cultivation in a pond farm, hybrids of clariid catfish increased the total biomass by 13 times, while in a recirculating system it increased by 15 times, but the final biomass of fish turned out to be greater when reared in open reservoir (46.875 versus 10.87 kg). It was shown that the final individual mass of hybrid fish cultured in pond conditions was 11.0% higher than the final mass of individuals in the recirculation system. The conducted studies showed that in the climatic conditions of the Astrakhan region (VI fish-breeding zone), a promising direction for aquaculture of African catfish is the feeding cultivation of hybrid juveniles in pond farms. It should be taken into account that in order to obtain marketable fish products (i.e. individuals weighing over 1000 g), it is necessary to use fish seeding material with an average weight of at least 100 g.

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Imron, Evi Tahapari, Jadmiko Darmawan, and Muhammad Luthfi Abdurachman. "Nuclear DNA content variation within four species of Asian catfish of family Pangasidae and their two interspecific hybrids by flow cytometry." Jurnal Akuakultur Indonesia 19, no. 2 (2020): 142–52. http://dx.doi.org/10.19027/jai.19.2.142-152.

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Nuclear DNA content (NDC) of species or population is believed to have been formed naturally by many mechanisms such chromosomal mutation, insertion and deletion, transposable element, and duplication. Additionally, hybridizations and species’ phylogenetic relationship may also contribute to the NDC diversity. This study was aimed to investigate the profile of NDC in four species Asian catfishes of the genera Pangasius including Pangasionodon hypophthalmus, Pangasius djambal, Pangasius nasusutus, Pangasius nieuwenhuisii, interspecific hybrid of female P. hypophthalmus and male P. djambal (Hybrid HD), and female P. hypophthalmus and male P. nasutus (Hybrid HN). Red blood cells (RBC) were taken from the respective species/groups and NDC measurement was performed in an Attune acoustic flowcytometer (ABI) using DAPI staining and chicken, Gallus domesticus, RBC was used as size reference. The results showed that the mean NDC of P. hypophthalmus, P. djambal. P. nasusutus, P. nieuwenhuisii, were 0.960±0.0254 pg, 1.017±0.0510 pg, 1.000±0.0410 pg, 1.074±0.0231 pg, which are within the range of NDC in the other catfish families The NDC values of Hybrid HD and Hybrid HN were1.005±0.0358 and 0.956± 0.0089, respectively. Among the pure line species, the NDC of P. hypophthalmus was the lowest and was different (P<0.05) from those of P. djambal and P. nieuwenhuisii but was not different (P>0.05) from that of the P. nasutus. The NDC of both Hybrid HD and Hybrid HN were not different form their respective parental lines. However, the NDC profiles of both hybrids were different in that the NDC of the former was in between while the latter was below their respective parental lines. Phylogenetically, the NDC diversity within Pangasiid catfish in this study was independent of their phylogenetic relationship based on cytoplasmic and nuclear markers. Keywords: Flow cytometry, nuclear DNA content, P.hypophthalmus, P. djambal, P. nasutus, P. nieuwenhuisii, interspecific hybrid.

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Bunnoy, Anurak, Uthairat Na-Nakorn, and Prapansak Srisapoome. "Development of a Monoclonal Antibody Specific to the IgM Heavy Chain of Bighead Catfish (Clarias macrocephalus): A Biomolecular Tool for the Detection and Quantification of IgM Molecules and IgM+ Cells in Clarias Catfish." Biomolecules 10, no. 4 (2020): 567. http://dx.doi.org/10.3390/biom10040567.

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Catfish is a commonly-cultivated freshwater fish in Thailand and many Southeast Asian countries. The molecular data obtained for the IgM heavy chain (IgMH) of catfish have been useful for distinguishing monoclonal antibodies (mAbs). A mAb specific to Cμ1 of the IgMH of catfish (IgMHCμ1 mAb) was developed in a rabbit model using sequence information from bighead catfish (Clarias macrocephalus). The IgMHCμ1 mAb strongly recognized the IgM heavy chain of the tested catfish, namely, bighead catfish, African catfish (Clarias gariepinus) and their hybrid (C. macrocephalus × C. gariepinus), in immunological Western blot analysis and competitive ELISAs. Additionally, the IgMHCμ1 mAb successfully recognized IgM+ cells by detecting IgM molecules in both secreted and membrane-bound forms in peripheral blood leukocytes (PBLs). The IgMHCμ1 mAb was further used to quantify the percentage of IgM+ cells among PBLs through flow cytophotometry. The IgM+ cell percentages of healthy bighead catfish, African catfish and their hybrid were 38.0–39.9%, 45.6–53.2%, and 58.7–60.0%, respectively. Furthermore, the IgMHCμ1 mAb showed no cross-reactivity with the IgM of zebrafish. These findings suggest that this mAb can be used as an immunological tool for monitoring the health, immune status, and immune development of cultivated Clarias catfish.

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Beecham, Rachel Venn, C. Douglas Minchew, Glenn R. Parsons, and Susan B. LaBarre. "Comparative Swimming Performance of Juvenile Blue Catfish and Hybrid Catfish." North American Journal of Aquaculture 71, no. 4 (2009): 348–53. http://dx.doi.org/10.1577/a08-034.1.

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Xu, De-Hai, Phillip H. Klesius, Eric Peatman, and Zhanjiang Liu. "Susceptibility of channel catfish, blue catfish and channel×blue catfish hybrid to Ichthyophthirius multifiliis." Aquaculture 311, no. 1-4 (2011): 25–30. http://dx.doi.org/10.1016/j.aquaculture.2010.10.012.

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Kumar, Ganesh, and Carole Engle. "The Effect of Hybrid Catfish Fingerling Prices on the Relative Profitability of Hybrid Channel Catfish." Journal of the World Aquaculture Society 42, no. 4 (2011): 469–83. http://dx.doi.org/10.1111/j.1749-7345.2011.00488.x.

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Iswanto, Bambang, and Evi Tahapari. "KARAKTERISTIK MORFOLOGI IKAN PATIN HIBRIDA HASIL HIBRIDISASI ANTARA IKAN PATIN SIAM (Pangasianodon hypophthalmus ) BETINA DENGAN IKAN PATIN NASUTUS (Pangasius nasutus) JANTAN DIBANDINGKAN INDUKNYA." BERITA BIOLOGI 21, no. 3 (2022): 327–38. http://dx.doi.org/10.14203/beritabiologi.v21i3.4407.

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ABSTRACTHybridization between female striped catfish (Pangasianodon hypophthalmus) and male nasutus catfish (Pangasius nasutus) has been conducted in Indonesia and Malaysia. However, only limited characteristics of the hybrid already reported. The present study aimed to elucidate the morphological differences between the hybrid and both parental species. Each 35 fish specimens of seven months old were examined through the measurement of 35 morphometric caharacters and the count of five meristic characters, as conducted by previous workers. Additionally, the morphology of gill rakers, mouth, snout, eye, maxillary and palatal dentitions, swim bladder, adipose fin and the body colouration were observed. The results revealed that the hybrid was morphometrically similar to the striped catfish and slightly differed from the nasutus catfish. For meristic characters, the hybrid could be practically differentiated from both parental species based on the number of pelvic fin rays. Morphologically, the hybrid differed from the striped catfish in terms of gill rakers, swim bladder, mouth, snout, maxillary and palatal dentitions, adipose fin and the body colouration. While, the hybrid was morphologically different from the nasutus catfish in terms of mouth, snout, eye position, maxillary and palatal dentitions, swim bladder and the body colouration. Key words: morphology, morphometric, meristic, hybrid, striped catfish (Pangasianodon hypophthalmus), nasutus catfish (Pangasius nasutus) ABSTRAKHibridisasi antara ikan patin Siam (Pangasianodon hypophthalmus) betina dengan patin nasutus (Pangasius nasutus) jantan telah dilakukan di Indonesia dan Malaysia. Namun demikian, karakteristik yang sudah dilaporkan masih terbatas. Penelitian ini bertujuan menguraikan perbedaan morfologi antara ikan patin hibrida tersebut dibandingkan kedua spesies induknya. Masing-masing 35 ekor spesimen berumur tujuh bulan diteliti melalui pengukuran 35 karakter morfometrik dan penghitungan lima karakter meristik, sebagaimana telah dilakukan oleh peneliti-peneliti terdahulu. Selain itu, morfologi tapis insang, mulut, moncong, mata, deretan gigi rahang atas dan gigi langit-langit mulut, gelembung renang, sirip lemak dan warna tubuh juga diamati. Hasil penelitian ini menunjukkan bahwa karakteristik morfometrik ikan patin hibrida serupa dengan ikan patin Siam, dan agak berbeda dari ikan patin nasutus. Secara meristik, ikan patin hibrida dapat dibedakan dengan mudah dari kedua spesies induknya berdasarkan jumlah jari-jari lemah sirip perut. Ikan patin hibrida berbeda dari ikan patin Siam dalam hal karakteristik morfologi tapis insang, mulut, moncong, deretan gigi rahang atas dan gigi langit-langit mulut, gelembung renang, sirip lemak dan warna tubuh. Selanjutnya, ikan patin hibrida berbeda dari ikan patin nasutus dalam hal karakteristik morfologi mulut, moncong, posisi mata, deretan gigi rahang atas dan gigi langit-langit mulut, gelembung renang dan warna tubuh. Kata kunci: morfologi, morfometrik, meristik, hibrida, patin Siam (Pangasianodon hypophthalmus), patin nasutus (Pangasius nasutus)

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Phadphon, Poompat, Thitapa Amontailak, Napatsakorn Kotchantuek, Suparat Srithawong, Wibhu Kutanan, and Chatmongkon Suwannapoom. "Genetic Diversity of the Endangered Mekong Giant Catfish, Striped Catfish, and Their Hybrids From Thailand." Tropical Conservation Science 12 (January 2019): 194008291986948. http://dx.doi.org/10.1177/1940082919869487.

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Previous genetic investigations of the Mekong giant catfish ( Pangasianodon gigas Chevey, 1913) and striped catfish ( Pangasianodon hypophthalmus Sauvage, 1878) provided discordant results. Here, we sequenced mitochondrial (mt) DNA of the cytochrome B region, and a control region, to characterize the genetic variation of P. gigas, P. hypophthalmus, and hybrids of these two species. Among the three groups, P. hypophthalmus had the greatest diversity in both regions, yet all three studied groups showed lower genetic diversity compared to the results of previous studies. The Bayesian Skyline Plots showed a reduction in effective population sizes of the parental species. The hybrids were found to have a constant population size with a recent divergence time. As expected, the network and neighbor joining tree showed a close maternal genetic relationship between the hybrid and P. hypophthalmus, a reflection of the breeding between male P. gigas and female P. hypophthalmus. Our results provide genetic information on these endangered fish that will be useful for both conservation and commercial breeding programs.

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Worawut, Kanokkan, Natsima Tokhun, Pakin Noppawan, and Baramee Phungpis. "Integrated Aquaponics System by Combining Japanese Cucumber Cultivation with Efficient Hybrid Catfish Farming for Enhanced Farmer Quality of Life." ASEAN Journal of Scientific and Technological Reports 27, no. 5 (2024): e254067. http://dx.doi.org/10.55164/ajstr.v27i5.254067.

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Farmers are currently facing the challenge of inadequate water quality in aquaculture, which negatively impacts the health of aquatic animals and their growth and survival rates. To address this issue, this study aims to assess the potential of raising hybrid catfish using an aquaponics system. The approach involves cultivating fish in a recirculating water system while growing Japanese cucumbers over 14 weeks. The treatment started with a hybrid catfish with an initial body weight of approximately 10 g and a length of 10 cm. They were fed according to a protocol using commercially prepared pellet feed, administered twice daily (morning and evening). The findings of the study revealed that the combined yield of hybrid catfish and Japanese cucumbers per production cycle was 112 and 3.20 kilograms, respectively. Additionally, the aquaponics recirculating system was found to efficiently utilize resources and promote the growth of both plants and fish. This integrated system offers a solution to wastewater management challenges in aquaculture, reduces associated costs, and enhances the value of wastewater by implementing aquaponics. A financial feasibility analysis was conducted to evaluate the economic viability of the hybrid catfish farming method. The analysis considered production costs, benefits, and discount rates, revealing positive net present values, benefit-to-cost ratios exceeding 1, and internal rates of return surpassing the cost of financing. This analysis underscores the feasibility and commendability of adopting hybrid catfish farming with aquaponics. Furthermore, it is highly suitable for developing and promoting small-scale or household-level businesses. Participants who underwent practical training in the “Aquaponics Fish Farming” course expressed great satisfaction and the ability to seamlessly integrate fish farming with crop cultivation.

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Bland, John M., Ryan Ardoin, Carissa H. Li, and Peter J. Bechtel. "Instrumental Texture Differentiation of Channel (Ictalurus punctatus) and Hybrid (Channel × Blue, Ictalurus furcatus) Catfish Fillets." Foods 11, no. 13 (2022): 1875. http://dx.doi.org/10.3390/foods11131875.

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An analysis of instrumental texture differences between channel (Ictalurus punctatus) and hybrid (female channel × male blue, I. furcatus) catfish fillets is presented. Factors including cold-storage type (fresh, frozen, or individually quick frozen (IQF)) and gender were included in the comparisons. Texture was measured at eight positions per fillet by a texture profile analysis (TPA) method that provided seven texture attributes: firmness, toughness, cohesiveness, adhesiveness, chewiness, resilience, and springiness, plus the thickness of the fillets (238 total). All attributes except adhesiveness were found to be statistically different (p < 0.05) between channel and hybrid fillets, with channels having the highest value in each attribute. When cold-storage type was included in the analysis, channels still produced the highest attribute values, but the number of attributes differed with firmness, toughness, and chewiness most associated with the differences in the type of catfish, while the other attributes were affected by cold-storage type. Thickness was found to be a strong covariant to some of the texture attributes, especially toughness, but the determination of difference between channels and hybrids was not affected and TPA profiles provided high levels of differentiation between catfish types.

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Chatakondi, Nagaraj G., and Eugene L. Torrans. "The Effect of Calcium Hardness on Hatching Success of Channel Catfish × Blue Catfish Hybrid Catfish Eggs." North American Journal of Aquaculture 74, no. 3 (2012): 306–9. http://dx.doi.org/10.1080/15222055.2012.676003.

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Small, Brian C., and Nagaraj Chatakondi. "Efficacy of Formalin as an Egg Disinfectant for Improving Hybrid Catfish (Channel Catfish × Blue Catfish) Hatching Success." North American Journal of Aquaculture 68, no. 1 (2006): 9–13. http://dx.doi.org/10.1577/a05-024.1.

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Dotti do Prado, Fernanda, Andrea Abrigato de Freitas Mourão, Fausto Foresti, José Augusto Senhorini, and Fabio Porto-Foresti. "First cytogenetic characterization of the Amazon Catfish Leiarius marmoratus (Gill, 1870) and its hybrid with Pseudoplatystoma reticulatum (Eigenmann & Eigenmann, 1889)." Caryologia 74, no. 1 (2021): 127–33. http://dx.doi.org/10.36253/caryologia-1149.

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This study reports the first cytogenetic characterization of the Amazonian catfish Leiarius marmoratus (“jandiá”) and its F1 (first generation) hybrid “cachandiá” with Pseudoplatystoma reticulatum (“cachara”). A diploid number of 56 chromosomes and a single argyrophilic nucleolus organizer region (Ag-NOR) in the short arm of two sub-telocentric chromosomes were observed for both L. marmoratus and P. reticulatum, but with differences in the karyotype formula and the size of the chromosome pair with NORs. The hybrid showed 2n = 56 chromosomes with an intermediate karyotype when compared to the parental species. A single Ag-NOR was maintained in the hybrid but located in two chromosomes with marked differences in size and presenting intraindividual variation in NOR activity (nucleolar dominance). For L. marmoratus and the hybrid, heterochromatic bands were predominately distributed in the terminal, centromeric, and sub-centromeric regions of some chromosomes and 5S rDNA sites located in two distinct sub-telocentric chromosomes, similar to the previously described for P. reticulatum. The data suggested that the hybrid karyotype might be insufficient for a precise discrimination of hybrids, however, Ag-NOR can be used as a chromosome marker to differentiate “cachandiá” from L. marmoratus and P. reticulatum. The current study also provides insights into the chromosomal features of L. marmoratus and contributes with novel cytogenetic information of this native Amazonian catfish included in the Pimelodidae family.

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Hettiarachchi, Darshika Udari, Veronica N. Alston, Logan Bern, et al. "Advancing aquaculture: Production of xenogenic catfish by transplanting blue catfish (Ictalurus furcatus) and channel catfish (I. punctatus) stem cells into white catfish (Ameiurus catus) triploid fry." PLOS ONE 19, no. 6 (2024): e0302687. http://dx.doi.org/10.1371/journal.pone.0302687.

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Xenogenesis has been recognized as a prospective method for producing channel catfish, Ictalurus punctatus ♀ × blue catfish, I. furcatus ♂ hybrids. The xenogenesis procedure can be achieved by transplanting undifferentiated stem cells derived from a donor fish into a sterile recipient. Xenogenesis for hybrid catfish embryo production has been accomplished using triploid channel catfish as a surrogate. However, having a surrogate species with a shorter maturation period, like white catfish (Ameiurus catus), would result in reduced feed costs, labor costs, and smaller body size requirements, making it a more suitable species for commercial applications where space is limited, and as a model species. Hence, the present study was conducted to assess the effectiveness of triploid white catfish as a surrogate species to transplant blue catfish stem cells (BSCs) and channel catfish stem cells (CSCs). Triploid white catfish fry were injected with either BSCs or CSCs labeled with PKH 26 fluorescence dye from 0 to 12 days post hatch (DPH). No significant differences in weight and length of fry were detected among BSCs and CSCs injection times (0 to 12 DPH) when fry were sampled at 45 and 90 DPH (P > 0.05). The highest survival was reported when fry were injected between 4.0 to 5.5 DPH (≥ 81.2%). At 45 and 90 DPH, cell and cluster area increased for recipients injected from 0 to 5.2 DPH, and the highest cluster area values were reported between 4.0 to 5.2 DPH. Thereafter, fluorescent cell and cluster area in the host declined with no further decrease after 10 DPH. At 45 DPH, the highest percentage of xenogens were detected when fry were injected with BSCs between 4.0 to 5.0 and CSCs between 3.0 to 5.0 DPH. At 90 DPH, the highest number of xenogens were detected from 4.0 to 6.0 DPH when injected with either BSCs or CSCs. The current study demonstrated the suitability of white catfish as a surrogate species when BSCs and CSCs were transplanted into triploid white catfish between 4.0 to 6.0 DPH (27.4 ± 0.4°C). Overall, these findings allow enhanced efficiency of commercializing xenogenic catfish carrying gametes of either blue catfish or channel catfish.

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Chimsook, Thitiphan, and Waranya Wannalangka. "Comparisons of Chemical and Physical Properties of Hybrid Strains of Pangasianodon gigas and Pangasianodon hypothalamus Prepared from Different Extracting Processes." Advanced Materials Research 894 (February 2014): 288–92. http://dx.doi.org/10.4028/www.scientific.net/amr.894.288.

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Three different catfish oil extraction processes were used to extract oil from catfish viscera: process P1 involved a mixture of ground catfish viscera and water, no heat treatment and centrifugation; process P2 involved ground catfish viscera (no added water), heat treatment and centrifugation; process P3 involved a mix true of ground catfish viscera and water, heat treatment and centrifugation. Chemical and physical properties of the resulting of catfish oils were evaluated. The P3 process recovered significantly higher amounts of crude oil from catfish viscera than the other extraction methods. The P3 oil also contained a higher percent of free fatty acid and peroxide values than P1and P2 oils. Oleic acid in catfish oil was the predominant fatty acid accounting for about 50% of total fatty acids. The apparent viscosity at-5 and 0 C was significantly higher (P < 0.05) than those at 5, 10, 15, 20, and 30 C.

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Huang, Lishi, Guosong Zhang, Yupeng Zhang, et al. "Profiling Genetic Breeding Progress in Bagrid Catfishes." Fishes 8, no. 8 (2023): 426. http://dx.doi.org/10.3390/fishes8080426.

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The Bagridae fish family holds significant economic value and enjoys a high demand in the commercial market due to its desirable characteristics, such as delicious meat, fewer muscle spines, and a pleasing flavor. In recent years, the Bagridae has experienced rapid development in the seed industry in response to industry demands. Researchers have conducted extensive studies on genetic breeding in the Bagridae, employing a comprehensive breeding approach that combines conventional breeding techniques with innovative new technologies and cooperative efforts. In this review, we present an overview of the market situation and discuss various breeding processes applied to the Bagridae, including selective breeding, genetic engineering breeding, cell engineering breeding, molecular marker-assisted breeding, and hybrid breeding. Additionally, we focus on introducing the cultivation methods for two new Bagridae varieties. Furthermore, we explore and summarize the breeding conditions, genetic background, heterosis, comprehensive breeding technology, stress resistance, and metabolic nutrition of hybrid Bagridae catfishes. Overall, noticeable heterosis has been observed in the breeding of the hybrid yellow catfish “Huangyou-1”, which exhibits promising market prospects and economic benefits for aquaculture. Our study aims to underscore the importance of harnessing the heterosis of catfish, particularly the Pelteobagrus and Bagridae species. Consequently, this review provides an update on the current available information regarding the seed industry of the Bagridae fish family.

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Pan, Tingshuang, Min Yang, He Jiang, et al. "Effect of Astragalus membranaceus on Transcriptome and Survival of Hybrid Yellow Catfish (Pseudobagrus vachellii ♂ × Tachysurus fulvidraco ♀) in Response to Aeromonas hydrophila Challenge." Fishes 8, no. 9 (2023): 454. http://dx.doi.org/10.3390/fishes8090454.

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Intensive culturing of hybrid yellow catfish (Pseudobagrus vachellii ♂ × Tachysurus fulvidraco ♀) has increased their mortality. Astragalus membranaceus has been used as an immune stimulant and antioxidant in fish for several years. A. membranaceus was decocted and mixed with the diet. After feeding for 28 d, the hybrid yellow catfish were challenged with Aeromonas hydrophila. To better understand the function of A. membranaceus in the defense of hybrid yellow catfish against A. hydrophila, we analyzed the spleen transcriptome data and relative percentage survival (RPS). There were 396 differentially expressed genes (DEGs) between the A. membranaceus and control groups at 24 h after A. hydrophila stimulation, including 263 upregulated and 133 downregulated DEGs. A significant enrichment of DEGs was found in the A. membranaceus group when the GO enrichment terms in the spleen were analyzed. The qRTPCRresults for the five upregulated and two downregulated DEGs from the spleen, intestine, and liver were consistent with the transcriptome data. The relative percentage survival of A. membranaceus was 85.71% after the fish were challenged with A. hydrophila.

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Kumar, Ganesh, Menghe H. Li, David J. Wise, et al. "Performance of Channel Catfish and Hybrid Catfish in Single‐Batch, Intensively Aerated Ponds." North American Journal of Aquaculture 81, no. 4 (2019): 406–16. http://dx.doi.org/10.1002/naaq.10109.

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Klimuk, A. A., O. D. Sergazieva, A. K. Ponomarev, S. V. Beketov, A. D. Larkin, and A. P. Minaenko. "Comparison of technological characteristics of clarias gariepinus hybrid progress with the parental individuals." Proceedings of the Voronezh State University of Engineering Technologies 86, no. 2 (2024): 199–206. https://doi.org/10.20914/2310-1202-2024-2-199-206.

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African catfish is popular among domestic fish farmers due to the high yield of high-quality commercial products and inedible parts of the fish suitable for processing. The paper presents a comparative characteristic of the mass composition of parts during cutting and morphometric data of the hybrid offspring of the African clariid catfish Clarias gariepinus with parental lines - Mikhailovskaya and Tamanskaya breeds, grown to marketable weight in RAS conditions. A histological comparison of muscle tissues of fish in the experimental groups was also carried out. The results of the histological analysis of the tissues revealed a significant difference in the area of muscle fibers in females (by 27.1%) compared to males Clarias gariepinus. It is shown that the hybrid offspring have an increased growth rate (achieving a marketable weight of 1200 g in 10 months of cultivation) compared to the parental lines (weight 1100 g in 15 months of cultivation). It was found that hybrid females are significantly fatter compared to Mikhailovsky and Taman individuals. When comparing the technological indicators of fish, no significant differences were found between the groups at the processing stage. For further intensification of warm-water aquaculture in Russia, interbreeding hybridization of African catfish is a promising solution. The studies have shown that hybrid offspring significantly exceed parental lines in growth rate, while not inferior in weight, length, or in the yield of edible parts of the fish (carcass, fillet, etc.). Therefore, interbreeding hybridization, which shows successful results, is a promising direction in aquaculture and processing of African catfish.

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Nikmah, Nur Lailatul Fitrotun, Alim Isnansetyo, Indah Istiqomah, and Murwantoko Murwantoko. "Susceptibility and Target Organ of Lymphocystis Disease Virus Infection in Giant Gourami (Osphronemus goramy), Hybrid Tilapia (Oreochromis sp.), Siamese Fighting Fish (Betta splendens), and Hybrid Catfish (Clarias sp.)." Jurnal Ilmiah Perikanan dan Kelautan 16, no. 2 (2024): 389–98. http://dx.doi.org/10.20473/jipk.v16i2.56685.

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Highlight Research 1. Lymphocystis disease is reported to infect seawater and freshwater fishes 2. The four important freshwater fish species in Indonesia are evaluated on their susceptibility to Lymphocystis Disease Virus 3. Lymphocystis infection causes behavioural changes and mortality with different onset times after infection on the four fish species 4. LCDV load is varied in quantity among different organs. Abstract Lymphocystis disease has a broad host range and has been reported to enter Indonesia. However, information regarding its susceptibility and predilection organs in fish is lacking. This study examined the susceptibility of four important fish species in Indonesia, namely, giant gourami (Osphronemus goramy), hybrid tilapia (Oreochromis sp.), Siamese fighting fish (Betta splendens), and hybrid catfish (Clarias sp.). The fish were infected with virus filtrate by intraperitoneal injection and immersion. The postinfection observation period was 60 days. Viral load was quantified by qPCR and expressed as major capsid protein (MCP) copy number/mg tissue. Mortality was observed in all fish species, with the highest recorded in hybrid catfish and the lowest in Siamese fighting fish. All the fish species showed changes in their clinical symptoms, such as anorexia and separation from schools. However, only giant gourami showed internal change seven days after injection (dpi), with white lesion detected in the liver. Viral load quantification showed that LCDV had different predilection organs in the four fish species. The highest viral load of giant gourami (1.7 x 104) was observed in the liver at 7 dpi, hybrid tilapia (7.5 x 103) was observed in the fins at 21 dpi, Siamese fighting fish (8.4 x 103) was observed in the fins at 14 dpi, and hybrid catfish (1.2 x 103) were observed in the fins and gills at 7 and 14 dpi. The findings indicated that giant gourami, hybrid tilapia, Siamese fighting fish, and hybrid catfish were susceptible to LCDV infection with different predilection organs.

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Beecham, Rachel V., Matt J. Griffin, Susan B. LaBarre, et al. "The Effects of Proliferative Gill Disease on the Blood Physiology of Channel Catfish, Blue Catfish, and Channel Catfish × Blue Catfish Hybrid Fingerlings." North American Journal of Aquaculture 72, no. 3 (2010): 213–18. http://dx.doi.org/10.1577/a09-034.1.

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Liu, Zhanjiang, Attila Karsi, Ping Li, Dongfeng Cao, and R. Dunham. "An AFLP-Based Genetic Linkage Map of Channel Catfish (Ictalurus punctatus) Constructed by Using an Interspecific Hybrid Resource Family." Genetics 165, no. 2 (2003): 687–94. http://dx.doi.org/10.1093/genetics/165.2.687.

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Abstract Catfish is the major aquaculture species in the United States. The hybrid catfish produced by crossing channel catfish females with blue catfish males exhibit a number of desirable production traits, but their mass production has been difficult. To introduce desirable genes from blue catfish into channel catfish through introgression, a genetic linkage map is helpful. In this project, a genetic linkage map was constructed using amplified fragment length polymorphism (AFLP). A total of 607 AFLP markers were analyzed using 65 primer combinations and an interspecific backcross resource family. A total of 418 AFLP markers were assigned to 44 linkage groups. Among the remaining 189 markers, 101 were not used because of significant segregation distortion, 29 were unlinked, and 59 were eliminated because they span very large distances. The 418 AFLP markers covered 1593 cM Kosambi. The AFLP markers showed a high level of clustering that appears to be related to certain primer combinations. This linkage map will serve as the basis for mapping a greater number of markers to provide a map with high enough resolution for it to be useful for selective breeding programs using introgression.

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Neeratanaphan, Lamyai, Chuchart Kamollerd, Pimchanok Suwannathada, Pongthorn Suwannathada, and Bundit Tengjaroenkul. "Genotoxicity and Oxidative Stress in Experimental Hybrid Catfish Exposed to Heavy Metals in a Municipal Landfill Reservoir." International Journal of Environmental Research and Public Health 17, no. 6 (2020): 1980. http://dx.doi.org/10.3390/ijerph17061980.

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This study aimed to investigate the concentrations of Cr, Cd and Pb in the water, sediment and experimental hybrid catfish muscles, and to compare the genetic differentiation and the levels of oxidative stress biomarkers (malondialdehyde and protein carbonyl) between the catfish from the contaminated reservoir near a municipal landfill and the reference area after chronic exposure. The concentrations of all metals in the water and the concentration of Cd in the sediment exceeded Thailand’s surface water quality and soil quality standards, respectively, whereas the concentrations of these metals in fish muscles did not exceed Thailand’s food quality standards. Dendrogram results in terms of genetic similarity values of the catfish from the reference and the landfill areas were 0.90 to 0.96 and 0.79 to 0.86, respectively, implying that the genetic differentiation of the fish from the landfill was greater than of those from the reference area. The fish in the landfill reservoir had slightly increased protein carbonyl levels. The results indicate that chronic heavy metal exposure can cause genotoxicity of the hybrid catfish and induce protein carbonyl as an oxidative stress biomarker in the reservoir near a municipal landfill.

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Adamu, Kabir Mohammed, Diana Bmazazhin David, Hafsat Muhammad, Namla Djadjiti, and Hafsat Mohammad. "Carcass Proximate Composition and Amino acid Profiles of Hybrid Catfish fed Supplementary Cockroach Meal." Jordan Journal of Agricultural Sciences 17, no. 3 (2021): 333–40. http://dx.doi.org/10.35516/jjas.v17i3.89.

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The high demand for fish as a protein source in fishmeal with the increasing production pressure on aquaculture has led to the research on the use of insects as an alternative source of protein for fish production. Studies have been reported on nutritional potentials of some insect’s protein on growth indices with little attention on the fish carcass's proximate composition and amino acid analyses; thus, this study was conducted to investigate the carcass proximate and amino acid analyses of hybrid catfish fed supplemented cockroach meal. Four experimental diets were formulated with varying inclusion levels of the insect (Diet A (100% fishmeal), Diet B (100% cockroach meal), Diet C (50% fishmeal and 50% cockroach meal), and Diet D (Commercial diet)). The hybrid catfish were fed twice daily with formulated/commercial diets for 12 weeks. After, the 12-week periods, pool samples of whole fish, were sacrificed for proximate analyses and amino acid analyses. The test fish carcass revealed the highest moisture content (9.22±0.01%) and crude protein (66.23±0.02%) values in Diet A and B respectively. Similarly, the highest crude fiber, ash, and carbohydrate content of 0.73±0.03%, 13.96±0.10%, and 12.55±0.13% were recorded in fish-fed diet B. The amino acid profiles of fish carcass fed diet B recorded the highest values of lysine, phenylalanine, methionine, proline, arginine, cysteine, alanine, and glutamic acid; glycine, threonine, and serine. Whilst other amino acids monitored in fish fed Diet B were moderate amongst others. The fish fed Diet C, also recorded positive (p<0.05) proximate compositions and amino acid profiles compared to the control carcass. The observed carcass proximate compositions and amino acid profiles in fish-fed Diets B and C may be attributed to the presence of cockroach meal in the diets. Hence, the inclusion of cockroaches in the diets of hybrid catfish could be employed as a potential source of protein for catfish fingerlings as revealed by the hybrid catfish carcass proximate composition and amino acid analyses. this makes a potential source of protein for human consumption

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Nguyen Phuc, Hung, Nguyen Do Thi, and Phuong Nguyen Mai. "EFFECTS OF TURMERIC RESIDUE ON HEMATOLOGICAL PARAMETERS, NUTRIENT DIGESTIBILITY AND GROWTH PERFORMANCE OF HYBRID CATFISH (Clarias gariepinus × Heterobranchus bidorsalis)." Journal of Science Natural Science 65, no. 10 (2020): 134–42. http://dx.doi.org/10.18173/2354-1059.2020-0057.

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Turmeric residue (TR), which is obtained from the extraction process of curcuminoids, may remain biological active compounds. This study was conducted to examine the effects of the TR on hematological parameters, nutrient digestibility, and growth performance in hybrid catfish (Clarias gariepinus × Heterobranchus bidorsalis). Three experimental diets were formulated denoted as follows: BD (Basal diet), BTR1D (BD plus 1% TR powder), and BTR2D (BD plus 2% TR powder). Twelve juvenile hybrid catfish with an initial body weight of 180 g were allocated to each of the 6 concrete tanks (350-L holding capacity), resulting in two replicate tanks per dietary treatment. For 4 weeks, the fish were hand-fed the experimental diets to apparent satiation twice daily. The results showed that the final body weight and weight gain tended to increase in fish fed TR-supplemented diets, and significant differences were recorded in the BTR2D group as compared to the BD group (P < 0.05). In contrast, FCR values were decreased in fish fed BTR1D and BTR2D in comparison with those fed BD, and the FCR value of the BTR2D group was significantly lower than that of the BD group (P < 0.05). Hemoglobin concentration, white blood cell count and protein and lipid apparent digestibility coefficients were higher in fish fed TR-supplemented diets than those fed BD. These results indicated that dietary supplementation of the TR was beneficial to hematological parameters, nutrient digestibility, growth performance, and feed utilization in hybrid catfish. The positive effects of the BTR2D on fish performances in the present study suggest that supplementation of the TR at the ratio of 2% in the diet may be necessary for hybrid catfish practical culture.

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Keremah, R. I., S. N. Deekae, and U. A. Akalokwu. "Growth and Feed utilization of Catfish Hybrid (Heterobranchus longifilis x Clarias gariepinus ) Fingerlings fed practical diets." Greener Journal of Agricultural Sciences 3, no. 4 (2013): 286–90. https://doi.org/10.15580/GJAS.2013.4.102412142.

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The effects of four practical diets (3 commercial and one locally prepared) on growth, feed utilization and survival of catfish hybrid (Heterobranchus longifilis  x Clarias gariepinus) fingerlings were compared in plastic aquaria in triplicates for 56days. Diets differed in crude protein (CP) and digestible energy as follows: Commercial Diet 1 (39.73% CP, 3911.8Kcal/kg), Diet 2 (34.50% CP, 3926.8Kcal/kg), Diet 3 (45.37%, 3883.6Kcal/kg) and local Diet 4 (40.34% CP, 3861.8Kcal/kg). Observations made indicated higher performance in weight and percent weight gain (2.299g, 411%), specific growth rate (0.78% day-1), condition factor (0.96), feed conversion ratio (2.67) and protein efficiency ratio (10.73) for fingerlings fed Diet 3 than other diets. Commercial Diet 2 appeared to perform least among the test diets. Fish survival was high and varied between 76.7% (Diet 4) and 96.7% (Diet 1). These results demonstrated that catfish hybrid fingerlings can be successfully reared in aquaria with good feed conversion, growth and high survival on commercially or locally prepared diets with 45.37% CP and adequate energy.

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Simora, Rhoda Mae C., Shangjia Li, Nermeen Y. Abass, Jeffery S. Terhune, and Rex A. Dunham. "Cathelicidins enhance protection of channel catfish, Ictalurus punctatus , and channel catfish ♀ × blue catfish, Ictalurus furcatus ♂ hybrid catfish against Edwarsiella ictaluri infection." Journal of Fish Diseases 43, no. 12 (2020): 1553–62. http://dx.doi.org/10.1111/jfd.13257.

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Hu, E., Brian Bosworth, Jeff Baxter, and Terrence R. Tiersch. "On-site evaluation of commercial-scale hybrid catfish production using cryopreserved blue catfish sperm." Aquaculture 426-427 (April 2014): 88–95. http://dx.doi.org/10.1016/j.aquaculture.2014.01.024.

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Nugroho, Estu, and Sabara Putera. "KARAKTERISASI GENETIK IKAN LELE DUMBO BERDASARKAN MARKER RAPD FINGERPRINTING." BERITA BIOLOGI 17, no. 1 (2018): 85. http://dx.doi.org/10.14203/beritabiologi.v17i1.2869.

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African catfish, namely lele dumbo, is an economically important fresh water fish in Nusa Tenggara Barat. There are three strains of African catfish that are well distributed among farmers. Genetic information of three strain catfish stocks is needed in order to sustain their development program. Genetic variations of the three strains of catfish, i.e. Sangkuriang, Masamo, Paiton has been evaluated using RAPD markers. DNA genome was extracted using phenol-chloroform methods. DNA was amplified using 20 primers (OPA 1 – 20). The results showed that three of the 20 primers have good amplification products. There was no significant genetic differences among three strains of catfish analyzed (P>0.05). Genetic variation of three African catfish stocks ranges from low to middle value. The highest genetic variation is found in strain Masamo with heterozygosity of 0.273 (with 70% polymorphism loci), followed by Sangkuriang 0.189 (60%) and Paiton 0.147 (40%). Hybrid candidates of Masamo-Sangkuriang have eterozygosity ranges between 0.256 - 0.306 (with 66.6 7 – 73.77% polymorphism loci). Strain Masamo and Paiton has more close genetic relationship than among the both and Sangkuriang.

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Bussarin Tongmee, Yuwalee Unpaprom, Rameshprabu Ramaraj, Kriangsak Mengumphan, and Doungporn Amornlerdpison. "Sustainability innovation and circular economy of freshwater hybrid catfish oil extraction." Maejo International Journal of Energy and Environmental Communication 5, no. 2 (2023): 35–40. http://dx.doi.org/10.54279/mijeec.v5i2.250834.

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Integrating sustainability innovation and a circular economy model in extracting freshwater hybrid catfish oil can lead to economic, environmental, and social gains, aligning closely. Fish oil is an industrial product of great nutritional value due to its having long-chain polyunsaturated fatty acids. Moreover, it is highly valued for its prophylactic and therapeutic properties in nutritional and health fields. Moreover, these fatty acids are related to different neuronal functions, and their absence is associated with diverse inflammatory processes and the precarious development of neurons in human patients. Fish oil from the body parts of the hybrid catfish' frozen adipose tissue was extracted using the conventional cooking method, and a screw compressor squeezed the prepared sample and then steamed it to separate solid and oil portions to determine quantitative yield. The GC-MS method characterized the obtained total extracts for the qualitative and quantitative determination of the presence of fatty acids. Oil contents of adipose tissues were saturated fatty acids, monounsaturated fatty acids, and unsaturated fatty acids 37.99±0.41%, 48.43±1.75%, and 13.58±1.33%, respectively. The oil was allowed to examined physical-chemical properties and microbial activities. The results show that the hybrid catfish studied are a rich source of omega-3, omega-6, and omega-9 polyunsaturated fatty acids.

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Perera, Dayan A., Ahmed Alsaqufi, Mei Shang, et al. "Xenogenesis-Production of Channel Catfish × Blue Catfish Hybrid Progeny by Fertilization of Channel Catfish Eggs with Sperm from Triploid Channel Catfish Males with Transplanted Blue Catfish Germ Cells." North American Journal of Aquaculture 79, no. 1 (2016): 61–74. http://dx.doi.org/10.1080/15222055.2016.1221008.

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Paul B. Ekpo, Ekerette E. Ekerette, and Owoidihe M. Etukudo. "Enhanced Growth, Haematological and Biochemical Performance in Hybrid Catfish of Clarias gariepinus x Clarias cavernicola." Sumerianz Journal of Scientific Research, no. 74 (December 6, 2024): 57–65. https://doi.org/10.47752/sjsr.74.57.65.

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This study evaluated the growth performance, haematological indices, and biochemical parameters of four catfish breeds, including two purebreds (Clarias cavernicola and Clarias gariepinus) and two hybrids (female C. cavernicola x male C. gariepinus and female C. gariepinus x male C. cavernicola). Over four months, growth was assessed by measuring body weight, total length, and standard length. Haematological and biochemical analyses were conducted to assess the health and immune status of the different breeds. The results indicated that the hybrid of female C. cavernicola x male C. gariepinus exhibited the highest growth performance, with significant increases in body weight and length compared to the other breeds. This hybrid also demonstrated the highest white blood cell (WBC) and lymphocyte counts, suggesting a stronger immune response, which was statistically significant (p<0.05) compared to the purebreds. Granulocyte levels were consistent across all breeds, while red blood cell (RBC) and platelet counts showed no significant differences, indicating stability in these parameters. Biochemical analysis revealed that the female C. cavernicola x male C. gariepinus hybrid had the highest total protein and globulin levels, which are indicative of better health and immune function. Albumin levels were higher in both hybrids compared to the purebreds, while cholesterol, creatinine, and glucose levels were similar across all breeds. The alleles associated with better immunity are likely present in the maternal line of C. cavernicola, leading to the superior vigour observed in the C. cavernicola (female) x C. gariepinus (male) hybrid. This enhanced vigour results in improved growth, hematological, and biochemical profiles. Compared to purebred breeds, this hybrid demonstrates better health, increased disease resistance, and a higher potential for productivity in aquaculture.

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Wang, Haolong, Helen R. Montague, Hana N. Hess, et al. "Transcriptome Analysis Reveals Key Gene Expression Changes in Blue Catfish Sperm in Response to Cryopreservation." International Journal of Molecular Sciences 23, no. 14 (2022): 7618. http://dx.doi.org/10.3390/ijms23147618.

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The hybrids of female channel catfish (Ictalurus punctatus) and male blue catfish (I. furcatus) account for >50% of US catfish production due to superior growth, feed conversion, and disease resistance compared to both parental species. However, these hybrids can rarely be naturally spawned. Sperm collection is a lethal procedure, and sperm samples are now cryopreserved for fertilization needs. Previous studies showed that variation in sperm quality causes variable embryo hatch rates, which is the limiting factor in hybrid catfish breeding. Biomarkers as indicators for sperm quality and reproductive success are currently lacking. To address this, we investigated expression changes caused by cryopreservation using transcriptome profiles of fresh and cryopreserved sperm. Sperm quality measurements revealed that cryopreservation significantly increased oxidative stress levels and DNA fragmentation, and reduced sperm kinematic parameters. The present RNA-seq study identified 849 upregulated genes after cryopreservation, including members of all five complexes in the mitochondrial electron transport chain, suggesting a boost in oxidative phosphorylation activities, which often lead to excessive production of reactive oxygen species (ROS) associated with cell death. Interestingly, functional enrichment analyses revealed compensatory changes in gene expression after cryopreservation to offset detrimental effects of ultra-cold storage: MnSOD was induced to control ROS production; chaperones and ubiquitin ligases were upregulated to correct misfolded proteins or direct them to degradation; negative regulators of apoptosis, amide biosynthesis, and cilium-related functions were also enriched. Our study provides insight into underlying molecular mechanisms of sperm cryoinjury and lays a foundation to further explore molecular biomarkers on cryo-survival and gamete quality.

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Venugopalan, Arun, Matt J. Griffin, David J. Wise, et al. "Virulence and immunogenicity of blue catfish alloherpesvirus in channel, blue and blue × channel hybrid catfish." Journal of Fish Diseases 44, no. 9 (2021): 1399–409. http://dx.doi.org/10.1111/jfd.13398.

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Mischke, Charles C., Jesse E. Filbrun, Menghe H. Li, and Nagaraj Chatakondi. "Quantifying the contribution of zooplankton to channel catfish and hybrid catfish growth in nursery ponds." Aquaculture 510 (August 2019): 51–55. http://dx.doi.org/10.1016/j.aquaculture.2019.05.037.

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Xu, De-Hai, and Phillip H. Klesius. "Evaluation of immune responses against the parasite Ichthyophthirius multifiliis between channel catfish and hybrid catfish." Fish & Shellfish Immunology 53 (June 2016): 108. http://dx.doi.org/10.1016/j.fsi.2016.04.073.

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Sudiarta, I. Made, Ady Prabowo, Sarintan Gubali, Aprianus Buheli, and Zulham Sirajuddin. "PENGARUH KOMBINASI BIOSLURRY DAN AIR KOTORAN LELE TERHADAP TANAMAN JAGUNG (Zea mays L.)." ZIRAA'AH MAJALAH ILMIAH PERTANIAN 47, no. 3 (2022): 330. http://dx.doi.org/10.31602/zmip.v47i3.8032.

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The purpose of this study was to identify the effect of different mixtures of bioslurry and catfish manure on the growth and production of hybrid maize. This research was conducted on the experimental field of the Technical Implementation Unit (UPT) of Agricultural Innovation, Universitas Ichsan Gorontalo, for 4 months from February to May 2022, which was conducted to examine the best formula for a mixture of organic fertilizer made from bioslurry and catfish wastewater manure through experiments. The field experiment design was arranged based on a Randomized Block Design (RAK) which consisted of 5 treatments and 3 replications, resulting with 15 experimental plots. The results of this study showed that the combination of treatment of bioslurry with catfish wastewater manure had a significant effect on the variable length of corn cobs in treatment B1 (75% bioslurry combined with catfish wastewater 25%), and was the best treatment for the variable number of leaves, cob length, cob diameter, wet shelled weight and dry shelled weight of corn.

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Effiong, M. U., and N. E. Peter. "Proximate compositions and length-weight relationships of hybrid catfish, Clarias gariepinus (♂) X Heterobranchus bidorsalis (♀) under various densities." Journal of Aquatic Sciences 34, no. 2 (2020): 153–60. http://dx.doi.org/10.4314/jas.v34i2.18.

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The study evaluated proximate compositions, length-weight relationships, condition factor and the survival rates of hybrid catfish, Clarobranchus (Clarias gariepinus (male) X Heterobranchus bidorsalis (female) reared at different densities in tarpaulin tanks. Fish were stocked at densities of 25, 50, 75 and 100fish/m3. Each treatment was replicated three times. Fish were fed with commercial catfish feed (45% crude protein) at 5% body weight for 84 days. Length and weight data collected were analyzed with FISAT software using the ELEFAN package to estimate relationship in body parameters. The mean exponent (b) for total length was 3.07 for fish reared at 75fish/m3. This showed positive allometric function, indicating that the species gets plumper as it grows larger. The regression line indicated a significant relationship (r = 0.9112; p < 0.05) with the equation W = 5.3783L3.0700. This showed that there was a high and significant correlation between the various total length and weight of Clarobranchus. Fish condition was best at 75fish/m3 density. There were no variations (p<0.05) in fish survival rates and whole body compositions. The results suggested that 75fish/m3 provided optimum environment for rearing Clarobranchus. Keywords: Hybrid, catfish, condition factor, survival, nutrient values

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Iswanto, Bambang, Imron Imron, Rommy Suprapto, and Huria Marnis. "KARAKTERISASI BIOMETRIK IKAN LELE DUMBO PERBANDINGAN DENGAN IKAN LELE AFRIKA (Clarias gariepinus BURCHELL, 1822)." BERITA BIOLOGI 18, no. 2 (2019): 225–34. http://dx.doi.org/10.14203/beritabiologi.v18i2.3422.

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Lele Dumbo was used to be a superior clariid catfish ardely cultured in Indonesia. Despite its aquaculture success, there was uncertainty about its taxonomic identity, whether it belongs to an African catfish (Clarias gariepinus Burchell 1822) or a hybrid resulted from a hybridization between African catfish C. gariepinus and an Asian catfish C. fuscus. Though lele Dumbo was no longer popular, the genetic improvement program has successfully developed lele Sangkuriang strain, and that have recently been extensively cultivated in Indonesia. As a lele Dumbo strain, the identity of lele Sangkuriang is also uncertain, thus need to be verified. The present study aimed to investigate the similarity of lele Dumbo through morphometric and meristic characterizations using samples of lele Sangkuriang (collected from BBPBAT Sukabumi, BPBAT Cijengkol and PT STP) compared to those of African catfish C. gariepinus introduced from Thailand and Kenya. The characterizations were carried out through measurement of 20 standard morphometric characters and five meristic characters the data obtained were then analyzed using principal component analysis. The results suggested that the values of morphometric and meristic characters of all three samples of lele Sangkuriang were not different from those of African catfish C. gariepinus. Likewise, the results of principal component analysis performed on morphometric and meristic characters also revealed that morphometric and meristic characteristics of all three samples of lele Sangkuriang were not different from those of African catfish C. gariepinus. Those results revealed that biometric characteristic of both lele Dumbo and African catfish C. gariepinus was not different, thus they seem belong to the same species.

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Darmawan, Jadmiko, and Evi Tahapari. "PERFORMA PERTUMBUHAN, KOEFISIEN VARIASI, DAN HETEROSIS HASIL PERSILANGAN IKAN PATIN (Pangasius sp.) PADA TAHAP PENDEDERAN II." Jurnal Riset Akuakultur 12, no. 1 (2017): 21. http://dx.doi.org/10.15578/jra.12.1.2017.21-28.

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Hibridisasi merupakan salah satu teknik pemuliaan ikan dalam rangka mendapatkan varietas unggul sehingga mampu meningkatkan nilai produksi suatu komoditas ikan yang dibudidayakan. Tujuan penelitian ini adalah untuk mengevaluasi performa pertumbuhan, koefisien variasi, dan nilai heterosis dari hasil persilangan tiga spesies ikan patin sebagai tetua, yaitu patin siam (Pangasianodon hypophthalmus), patin jambal (Pangasius djambal), dan patin nasutus (Pangasius nasutus) pada tahap pendederan II. Induk ikan patin siam dan patin jambal yang digunakan merupakan ikan yang sudah dirilis sebagai ikan budidaya, sedangkan induk ikan patin nasutus berasal dari perairan umum dan sedang dalam proses domestikasi sebagai ikan budidaya. Persilangan yang dibuat adalah: A) f patin jambal >< m patin jambal (JJ); B) f patin siam >< m patin jambal (SJ); C) f patin siam >< m patin siam (SS); D) f patin siam >< m patin nasutus (SN); dan E) f patin nasutus >< m patin nasutus (NN). Penelitian dilakukan secara indoor hatchery selama 30 hari pemeliharaan. Nilai heterosis dihitung berdasarkan laju pertumbuhan spesifik (LPS) bobot, LPS panjang total, dan sintasan. Hasil penelitian menunjukkan bahwa performa pertumbuhan, sintasan, dan konversi pakan ikan hasil persilangan tidak berbeda nyata (P>0,05). Ikan patin SN memiliki performa yang lebih baik dari tetuanya dengan nilai heterosis bobot akhir, LPS bobot, panjang total, LPS panjang total, dan sintasan berturut-turut sebesar 110,87%; 19,78%; 36,14%, 36,09%; dan 15,04%; serta nilai koefisien variasi berkisar antara 0,00-11,08. Bobot akhir, panjang total dan sintasan ikan patin SJ juga lebih baik dari tetuanya dengan nilai heterosis berturut-turut sebesar 46,00%; 11,27%; dan 2,27%; namun untuk heterosis LPS bobot dan LPS panjang total bernilai negatif (-6,65% dan -1,01%), serta nilai koefisien variasi berkisar antara 0,00-12,75. Berdasarkan hasil penelitian tersebut menunjukkan bahwa ikan patin hibrida SN berpotensi sebagai ikan budidaya dalam rangka peningkatan produksi ikan patin daging putih selain dari ikan patin hibrida SJ (pasupati) yang telah dirilis ke masyarakat.Hybridization is a fish breeding technique in order to obtain high yielding varieties as to increase the production value of a farmed fish. The purpose of this study was to evaluate the growth performance, the coefficient of variation and heterosis value of the result of crossing three species of catfish as a parent, which was striped catfish (Pangasianodon hypophthalmus), jambal catfish (Pangasius djambal) and nasutus catfish (Pangasius nasutus). Crosses made were A) f jambal catfish >< m jambal catfish (JJ); B) f striped catfish >< m jambal catfish (SJ); C) f striped catfish >< m striped catfish (SS); D) f striped catfish >< m nasutus catfish (SN); and E) f nasutus catfish >< m nasutus catfish (NN). The study was performed at the indoor hatchery for 30 days. Heterosis values were calculated based on the specific growth rate (SGR) final weight, SGR total length, and survival rate. The results showed that growth performance, survival rate, and feed conversion were not significantly different (P>0.05). Catfish SN has a better performance than the parent with the value of heterosis at final weight, SGR weight, total length, SGR total length, and survival rate of 110.87%, 19.78%, 36.14%, 36.09%, and 15.04%, respectively. The coefficient of variation ranged from 0.00 to 11.08. Final weight, total length, and survival of catfish SJ were also better than the parent with the heterosis value of 46.00%, 11.27%, and 2.27% respectively, but for heterosis SGR of the weight and the total length were negative (-6.65% and -1.01%) and the coefficient of variation ranged from 0.00 to 12.75. These results indicated that the hybrid catfish SN has a great potential as fish farming in the hope of increasing the production of white meat catfish hybrid apart from SJ (Pasupati) that have been released to the public.

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SOUZA, Gilcler Alcino Sabaini, Luciana Kimie Savay SILVA, Fernando Franceschini MACEDO, et al. "Performance of hybrid catfish subjected to different protein levels." Boletim do Instituto de Pesca 43, especial (2017): 113–20. http://dx.doi.org/10.20950/1678-2305.2017.113.120.

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Jolly, C., C. Ligeon, and R. Dunham. "Benefit/cost analysis and returns to catfish hybrid research." Aquaculture Economics & Management 8, no. 5-6 (2004): 217–31. http://dx.doi.org/10.1080/13657300409380366.

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Zhang, Yun‐Long, Cheng‐Ming Zhang, Qi‐Xue Fan, and Zhi‐Gang Shen. "Comparative Study of Growth, Feed Utilization, and Immunity of Hybrid Catfish and All‐Male Yellow Catfish." North American Journal of Aquaculture 82, no. 1 (2019): 71–74. http://dx.doi.org/10.1002/naaq.10122.

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Dong, Sheng, Dayan A. Perera, Khoi Vo, et al. "Channel catfish Ictalurus punctatus strain comparison for induced ovulation in the early spawning season to produce channel catfish ♀×blue catfish I. furcatus ♂ hybrid catfish embryos." Aquaculture 471 (March 2017): 185–89. http://dx.doi.org/10.1016/j.aquaculture.2016.11.029.

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Torrans, Les, and Brian Ott. "Effect of Grading Fingerling Hybrid Catfish (♀ Channel Catfish × ♂ Blue Catfish) on Growth, Production, Feed Conversion, and Food Fish Size Distribution." North American Journal of Aquaculture 80, no. 2 (2018): 187–92. http://dx.doi.org/10.1002/naaq.10024.

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Journal articles on the topic 'Catfish hybrid'

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