Relevant bibliographies by topics / Clarias jaensis

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Academic literature on the topic 'Clarias jaensis'

Author: Grafiati
Published: 2 June 2025
Last updated: 22 June 2025

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Journal articles on the topic "Clarias jaensis"

1

Paul, Zango, Mutlen Melvin, Efole Ewoukem Thomas, Ngnango Jean Blaise, Miranda Keng Kukuru, and Tomedi Eyango Minette. "Effects of Soybean Meal Substitution on the Growth and Survival of Clarias jaensis (Boulenger, 1909) Juveniles Using Chromolaena odorata Leaves Powder." Asian Journal of Fisheries and Aquatic Research 26, no. 1 (2024): 25–35. http://dx.doi.org/10.9734/ajfar/2024/v26i1723.

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Aims: The aim was to contribute to the improvement of Clarias jaensis productivity through the evaluation of the effect of the substitution level of soybean meal by Chromolaena odorata leaves powder on the survival rate and growth characteristics of Clarias jaensis juveniles.
 Place and Duration of the Study: From April to June 2019 at TAWON (LN: 5°10' - 5°20' and LE: 10°20' - 10°21'). Sudano-Guinean altitude zone of West Cameroon.
 Study Design: Two hundred and twenty-five Clarias jaensis juveniles (12.44 ± 0.15g) were divided into five treatments corresponding to 0; 10; 15; 20 and 25% of substitution level of soybean meal by Chromolaena odorata leaves powder.
 Methodology: They were fed twice a day (8:00 A.M. and 6:00 P.M.) at 5% of ichthyobiomass, total length, live body weight and physicochemical parameters were measured every tree week for 84 days.
 Results: At the 15% substitution level of soybean meal, the survival rate was the highest (100%). Mean Final Weight and Mean Daily Weight Gain were significantly (P≤0.05) higher at 15% (45.73 ± 7.45g and 0.56 ± 0.31g/d). Specific Growth Rate and Condition factor K were higher at 25% (1.41 ± 0.68%/d and 1.08 ± 0.22%g/cm3), however, no significant differences were recorded. The cost of feed to produce one kg of C. jaensis was lower at 15% (609.61 Fcfa).
 Conclusion: Soybean meal can be substituted by C. odorata leaves powder at 15% in feed for C. jaensis juveniles.
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2

Tonfack Djouatsa, Juvenal, Félix Meutchieye, Paul Zango, et al. "Phenotypic features depict variability in <i>Clarias jaensis</i> wild populations in Cameroon." Cameroon Journal of Experimental Biology 18, no. 01 (2024): 41–48. http://dx.doi.org/10.4314/cajeb.v18i01.6.

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This study was conducted to contribute to a better understanding of the phenotypic diversity of natural populations of Clarias jaensis in Cameroon, with the objective to harness the exploitation and conservation of this native catfish. A total of 269 native catfish (Clarias jaensis), including 139 males and 130 females, were sampled on 6 sites in Cameroon. One (1) phaneroptic observation, seventeen (17) biometric traits and four (4) meristic traits were evaluated. The main results showed that there are three colour patterns (brown, black and marbled) on the dorsal region and flanks in Clarias jaensis, with a predominance of brown (81.04%) and black (11.52%) patterns. The effect of sex on total weight (TW), snout length (SnL), prepelvic length (PPvL), total length (TL), standard length (SL), body depth (BD) and caudal peduncle depth (CPD) was significant (p&lt;0.05). In general, biometric traits were significant (p&lt;0.05) and positively correlated with total weight. The number of soft fin rays in dorsal fin (D) and anal fin rays (A) were negatively and weakly correlated with total weight (r=-0.02 and r=-0.04 respectively), while, the number of soft fin rays in pectoral fin was negatively and weakly correlated with total weight (r=0.13). The Principal Component Analysis (PCA) performed on all the biometric and meristic traits shows that the first two axes alone account for more than 50% of the total inertia. Hierarchical Ascending Classification (HAC) highlighted the existence of 3 morphotypes. The observed biodiversity suggests that the Clarias jaensis catfish is a natural genetic resource with the necessary variability to be exploited, though there is a need to develop population and habitats monitoring plan.
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3

Tiogué, Claudine Tekounegning, Paulin Nyadjeu, Simplice Raymond Mouokeu, Guegang Tekou, and Hilaire Tchoupou. "Evaluation of Hybridization in Two African Catfishes (Siluriformes, Clariidae): Exotic (Clarias gariepinus Burchell, 1822) and Native (Clarias jaensis Boulenger, 1909) Species under Controlled Hatchery Conditions in Cameroon." Advances in Agriculture 2020 (December 10, 2020): 1–11. http://dx.doi.org/10.1155/2020/8985424.

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The study was conducted to evaluate reciprocal hybridizations in the African catfishes Clarias gariepinus and Clarias jaensis using artificial reproduction under controlled hatchery conditions. The results revealed that the highest fertilization (82.77%) and hatching (67.77%) rates were achieved in the hybrid cross female C. jaensis × male C. gariepinus (Fcj × Mcg). Deformed larvae rates ranged from 9.01 to 16.33%; the hybrid Fcj × Mcg recorded the lowest rate. Survival rates in the larval stage were higher than 80% whatever crossing considered. However, it was higher in the hybrid Fcj × Mcg unlike its homologous female C. gariepinus × male C. jaensis (Fcg × Mcj) which recorded the lowest value (81.70%). In the fry stages D32, survival rates were low than 65%. They were higher and comparable in parental cross Fcg × Mcg (57%) and hybrid cross Fcj × Mcg (61.67%). The lowest survival rate (41.16%) was recorded in parental cross Fcj × Mcj. The hybrid cross Fcj × Mcg expressed the highest growth performances close to those of parental cross Fcg × Mcg, unlike parental cross Fcj × Mcj. Size heterogeneity was greater in hybrids. In all crosses, the condition factor K was low (0.58 to 0.85%), the length-weight relationship was significant with determination coefficient R2 greater than 0.9. The growth was of the negative allometric type (with b less than 3). Positive heterosis has been recorded for both survival and growth at all stages of development. It was concluded that C. jaensis × C. gariepinus hybridizations are indeed possible and would contribute to improve Clarias fry production in captivity. However, the pure strains of Clariidae remain endangered in the natural environment.
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4

Gwladys, Tsoupou Kuété Suzy, Efole Ewoukem Thomas, Moussala Ottoko, and Tchoumboue Joseph. "EFFECT OF VARIOUS LEVELS OF METABOLIZE ENERGY ON GROWTH PERFORMANCE OF CLARIAS JAENSIS FINGERLINGS (BOULENGER, 1909)." International Journal of Research -GRANTHAALAYAH 6, no. 5 (2018): 65–72. http://dx.doi.org/10.29121/granthaalayah.v6.i5.2018.1427.

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The aim of this study was to contribute to the improvement of knowledge on the growth of endogenous catfish of Cameroon Clarias jaensis to develop the standards of his breeding. For this purpose, 396 fingerlings (36.7 ± 10.1 g) were divided into four comparable group with three replications. Four experimental rations containing 3000, 3100, 3200 and 3300 Kcal/kg of metabolize energy were distributed in these group at 5% of ichtyobiomasse. Except the feed intake and survival rate, other growth characteristics were comparable (P&gt;0.05) between rations. The higher feed intake and the lowest consumption index were recorded with the ration containing 3000 Kcal/kg. The weight (95.10 ± 8.14 g), total length (23.77 ± 1.15 cm), weight gain (58.70 ± 9.49g), average daily gain (1.01 ± 0.16 g), specific growth rate (1.66 ± 0.26%) and K factor (0.71 ± 0.05) were higher with the ration containing the lowest level of energy. This reveals that Clarias jaensis fingerlings requires less energy for growth compared to other catfish like Clarias gariepinus. In view of the above and given the cost of manufacturing the food, the ration containing 3000 kcal/kg would be agro economically sustainable although the search for the optimal level of energy remains.
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Tsoupou, Kuété Suzy Gwladys *1, Ewoukem Thomas 2. Efole, Ottoko Junior 1. Moussala, and Joseph 1. Tcthoumboue. "EFFECT OF VARIOUS LEVELS OF METABOLIZE ENERGY ON GROWTH PERFORMANCE OF CLARIAS JAENSIS FINGERLINGS (BOULENGER, 1909)." International Journal of Research - Granthaalayah 6, no. 5 (2018): 65–72. https://doi.org/10.5281/zenodo.1254567.

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The aim of this study was to contribute to the improvement of knowledge on the growth of endogenous catfish of Cameroon Clarias jaensis to develop the standards of his breeding. For this purpose, 396 juveniles (36.7 &plusmn; 10.1 g) were divided into four comparable group with three replications. Four experimental rations containing 3000, 3100, 3200 and 3300 Kcal/kg of metabolize energy were distributed in these group at 5% of ichtyobiomasse. Except the feed intake, survival and other growth characteristics were comparable (P&gt;0.05) between rations. The higher feed intake and the lowest consumption index were recorded with the ration containing 3000 Kcal/kg. The weight (95.10 &plusmn; 8.14 g), total length (23.77 &plusmn; 1.15 cm), weight gain (58.70 &plusmn; 9.49g), average daily gain (1.01 &plusmn; 0.16 g), specific growth rate (1.66 &plusmn; 0.26%) and K factor (0.71 &plusmn; 0.05) were higher with the ration containing the lowest level of energy. This reveals that Clarias jaensis fingerlings requires less energy for growth compared to other catfish like Clarias gariepinus. In view of the above and given the cost of manufacturing the food, the ration containing 3000 kcal/kg would be agro economically sustainable although the search for the optimal level of energy remains.
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6

Paul, Zango, Thomas Efole Ewoukem, Tomedi Eyango Minette Epse Tabi Abodo, Afane Kety Sandra, Victor Pouomogne, and Joseph Tchoumboue. "Effect of the Incorporation Level of Ripe Avocado Pulp Powder Persea americana on the Zootechnical Performances of Clarias jaensis Juveniles (Boulanger, 1909)." European Journal of Theoretical and Applied Sciences 1, no. 6 (2023): 217–28. http://dx.doi.org/10.59324/ejtas.2023.1(6).22.

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In order to contribute to the valorization of agricultural by-products in fish feed, the effect of the incorporation level of the ripe avocado pulp powder persea americana on the zootechnical performance of Clarias jaensis Juveniles (Boulanger, 1909), was studied between February and July 2019 in the highland zone of West Cameroon. To attend the aims, 156 juvenile Clarias jaensis (25.82 ± 7.43g) settled in triplicates in floating tanks were fed four iso-protein rations (40% crude protein) corresponding to 0, 8, 12 and 16% incorporation of ripe avocado. Feed were distributed twice daily (8 am and 6 pm) at 5% of the fish biomass for 63 days. The following results were as follows: Survival rate, final mean weight, daily mean weight gain, specific growth rate and condition factor K were higher and non-significant in batches receiving 8% of ripe avocado pulp powder with a lower feed conversion ratio (99,14 ± 0,50% ; 40,22 ± 10,5g; 0,14 ± 0,44 g/d, 0,41 ± 1,07 %g/d; 0,70 ± 0,09 %g/cm3 and 1,87 ± 0,09) and lower with a highest feed conversion ratio at 16% incorporation (93,67 ± 8,47 %; 30,02 ± 8,00g; 0,08 ± 0,22 g/d; 0,28 ± 0,77 % g /d; 0,68 ± 0,15 %g/cm3 and 2,018 ± 017). Body composition varied with the level of pulp meal incorporation, water content was high with 0% (79.14%), and dry matter (23.87%), crude protein (15.35%) and fat (5.23%). It was higher with 16%, while ash was higher (3.45%) in batches fed with 12% incorporation. The feed cost was lower at 8% incorporation (734.89Fcfa/kg of fish produced). The incorporation of 8% avocado pulp meal was found to improve the growth of Clarias jaensis juveniles and reduce the feed cost. Producers can use spoiled avocados as fish feed to reduce production costs, without negative impact on the final product.
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7

Zango, Paul, Efole Ewoukem Thomas, Eyango Minette Epse Tabi Abodo Tomedi, Kety Sandra Afane, Pouomogne Victor, and Tchoumboue Joseph. "Effect of the Incorporation Level of Ripe Avocado Pulp Powder Persea americana on the Zootechnical Performances of Clarias jaensis Juveniles (Boulanger, 1909)." European Journal of Theoretical and Applied Sciences 1, no. 6 (2023): 217–28. https://doi.org/10.59324/ejtas.2023.1(6).22.

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In order to contribute to the valorization of agricultural by-products in fish feed, the effect of the incorporation level of the ripe avocado pulp powder <i>persea americana </i>on the zootechnical performance of <i>Clarias jaensis </i>Juveniles (Boulanger, 1909), was studied between February and July 2019 in the highland zone of West Cameroon. To attend the aims, 156 juvenile <i>Clarias jaensis (</i>25.82 ± 7.43g) settled in triplicates in floating tanks were fed four iso-protein rations (40% crude protein) corresponding to 0, 8, 12 and 16% incorporation of ripe avocado<i>. </i>Feed were distributed twice daily (8 am and 6 pm) at 5% of the fish biomass for 63 days. The following results were as follows: Survival rate, final mean weight, daily mean weight gain, specific growth rate and condition factor K were higher and non-significant in batches receiving 8% of ripe avocado pulp powder with a lower feed conversion ratio (99,14 ± 0,50% ; 40,22 ± 10,5g; 0,14 ± 0,44 g/d, 0,41 ± 1,07 %g/d; 0,70 ± 0,09 %g/cm3 and 1,87 ± 0,09) and lower with a highest feed conversion ratio at 16% incorporation (93,67 ± 8,47 %; 30,02 ± 8,00g; 0,08 ± 0,22 g/d; 0,28 ± 0,77 % g /d; 0,68 ± 0,15 %g/cm3 and 2,018 ± 017). Body composition varied with the level of pulp meal incorporation, water content was high with 0% (79.14%), and dry matter (23.87%), crude protein (15.35%) and fat (5.23%). It was higher with 16%, while ash was higher (3.45%) in batches fed with 12% incorporation. The feed cost was lower at 8% incorporation (734.89Fcfa/kg of fish produced). The incorporation of 8% avocado pulp meal was found to improve the growth of <i>Clarias jaensis </i>juveniles and reduce the feed cost. Producers can use spoiled avocados as fish feed to reduce production costs, without negative impact on the final product.
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8

Igejongbo, Igejongbo, Toyosi Fadekemi, and Olufade Esther. "Gut Content and Viscerosomatic Index Analysis of Family Clariidae in the Riverine Area of South Western Nigeria." East African Scholars Journal of Agriculture and Life Sciences 5, no. 3 (2022): 53–59. http://dx.doi.org/10.36349/easjals.2022.v05i03.001.

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Fish gut content analyses refer to methods of analyzing fish diet through assessment of materials found in dissected fish stomach. This work was conducted to determine the gut content, most frequently consumed prey and viscerosomatic index of the Clariidae species found in riverine area in south western Nigeria. The study spanned for six months (December, 2020 to May, 2021). Fish samples were examined fresh using frequency of occurrence, number and degree of fullness to examine the guts. Out of the 99 specimens collected in total, 45.83% and 54.17% of Clarias gariepinus, had ¼ full stomachs and half full stomachs respectively; 60%, 36.67%, 3.33% of Clarias jaensis had ¼ full, half full and ¾ full stomachs stomachs respectively, 63.33% and 36.67% of Clarias anguillaris had ¼ full and half full stomachs respectively while Clarias agboyiensis and Clarias pachynema species had similar stomach fullness of 33.33% for ¼ fullness and 66.67% for half fullness with none of the species having empty nor 100% full stomachs. Result also showed that the examined species are indiscriminate feeders; feeding on both plants and animals. The viscerosomatic index showed that the species had more flesh than carcass, giving an inference that the species have reasonable nutritional value and FCR. In conclusion, the Clariidae species were found to be omnivores and as such are to be provided with more natural materials in their environment for proper growth.
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9

Zango, Paul, Claudine Tekounegning Tiogue, Paulin Nyadjeu, et al. "Effect of the Type of Pituitary Extracts and Dose of Synthetic Hormones HCG and Ovaprim on Some Reproductive Characteristics of the Endogenous Catfish of Cameroon Clarias jaensis (Boulanger, 1909) in a Controlled Environment." Asian Journal of Fisheries and Aquatic Research 25, no. 5 (2023): 105–16. http://dx.doi.org/10.9734/ajfar/2023/v25i5704.

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Aims: Improve the domestication of Clarias jaensis through fry production in a controlled environment.&#x0D; Place and Duration of the Study: From April to August 2020 in Integrated Aquaculture Common Initiative Group of West in Batie (LN: 5°17'0''-5°18'53'' and LE: 10°17'0''-10°19'31''), Sudano-Guinean altitude zone of West Cameroon.&#x0D; Study Design: 42 females and 15 males of respective weight and size: 177±40.46g, 347.62±111.72g, 29.02±1.74cm and 39.52±12.27cm were used and divided into 7 batches of comparable weights and sizes. Two randomly selected batches were subjected to the female pituitary extract of Clarias jaensis and Toads, five others to the synthetic hormones HCG (doses 3800 and 4000 IU/kg live weight) and Ovaprim (doses of 0.4, 0.5 and 0.6 ml/kg) respectively.&#x0D; Methodology: Eggs were enumerated by direct observation after fertilization. At the end of the hatching (D1) and of vitelline resorption (D3), the larvae of each experimental lot were counted and measured.&#x0D; Results: The mean diameter of the oocytes after induction, the relative and absolute fecundities and the fertility rate were higher in batches treated with the hormone HCG at a dose of 4000 IU/kg (2.12±0.1mm; 29,584±5,19 oocytes/g; 4694±620 oocytes and 80.14±9.78%), the lowest values were obtained with HCG at 3800 IU /kg, Ovaprim at 0.4ml/kg, pituitary toad extract and Ovaprim at 0.5 ml/kg (1.93±0.06mm; 15.29 ± 4.22 oocytes/g; 1410±106 oocytes and 55.34±1.51%). The hatchability rate was higher with Ovaprim at 0.6ml/kg, followed by HCG at 4000 IU/kg, However, no significant differences were observed between treatments (P&gt;0.05)."&#x0D; Conclusion: In a fish farm of intensive production, the use of the hormone Ovaprim dose 0.6 ml/kg or HCG at 4000IU/kg will lead to high results.
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Bahanak, Dieu-Ne-Dort, Jonathan A. Mbondo, Etienne D. Bassock Bayiha, et al. "Description of a new species from Clarias maclareni and phylogenetical analysis of Quadriacanthus (Monogenea, Dactylogyridae) species transfers between clariid and non-clariid fish hosts in Cameroon." Parasite 29 (2022): 37. http://dx.doi.org/10.1051/parasite/2022035.

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Recently in Cameroon, two species belonging to Quadriacanthus: Q. anaspidoglanii Akoumba, Tombi &amp; Bilong Bilong, 2017 and Q. euzeti Nack, Pariselle &amp; Bilong Bilong, 2016 have been recorded on gill filaments of Notoglanidium macrostoma (Siluriformes, Claroteidae) in the Memou’ou River (Nyong Basin) and Papyrocranus afer (Osteoglossiformes, Notopteridae) in Lake Ossa, respectively. These records have been considered the result of lateral transfers from Clariidae to a Claroteidae host for the first case (parasitism of N. macrostoma by Q. anaspidoglanii) and from Clariidae or Bagridae to a Notopteridae host for the second (parasitism of P. afer by Q. euzeti). In this paper, the investigation of interspecific relationships among Quadriacanthus spp. parasitizing Clariidae, Bagridae, Claroteidae and Notopteridae in Cameroon resulted in the record of Q. anaspidoglanii from N. macrostoma, Q. euzeti from P. afer, a new record of Q. levequei Birgi, 1988 from Clarias jaensis in the Nyong River, and the description of Q. barombiensis n. sp. from Clarias maclareni in Lake Barombi Mbo. The newly identified species is characterized by having an accessory piece ending in one small hook and the median expansion of its dorsal bar with two filaments. Phylogenetic analysis based on 28S rDNA sequences confirms that the Quadriacanthus spp. parasitizing gill filaments of non-clariid hosts in Cameroon originate from lateral transfers from clariid fishes, and that Clariidae are ancestral hosts of these monogenean species.
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Book chapters on the topic "Clarias jaensis"

1

Pau, Zango, Mutlen Melvin, Yemdjie Mane Divine D., Ngoumtsa Ngoulla Stéphane, Miranda Keng Kukuru, and Tomedi Eyango Minette. "Comparative Effect of Incorporation Level of Moringa oleifera Leaf Flour on Survival and Growth Performances of Clarias gariepinus and Clarias jaensis Juveniles in Tanks." In Innovations in Biological Science Vol. 3. B P International, 2024. http://dx.doi.org/10.9734/bpi/ibs/v3/7527b.

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