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Journal articles on the topic 'Rachycentron'

Author: Grafiati

Published: 3 June 2025

Last updated: 19 July 2025

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1

المختار, مصطفى احمد. "Rachycentron canadum (Linnaeus, 1766) وأھميتھا في الاستزراع المائي البحري Rachycentridae",. Iraqi Journal of Aquaculture 8, № 1 (2022): 1–14. http://dx.doi.org/10.58629/ijaq.v8i1.226.

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2

Benetti, Daniel D., Jorge Suarez, Julio Camperio, et al. "A review on cobia, Rachycentron canadum , aquaculture." Journal of the World Aquaculture Society 52, no. 3 (2021): 691–709. http://dx.doi.org/10.1111/jwas.12810.

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3

Kerber, Claudia Ehlers, Eduardo Gomes Sanches, Mauricio Santiago, and José Luis Luque. "First record of Neobenedenia melleni (Monogenea: Capsalidae) in sea-farmed cobia (Rachycentron canadum) in Brazil." Revista Brasileira de Parasitologia Veterinária 20, no. 4 (2011): 331–33. http://dx.doi.org/10.1590/s1984-29612011000400013.

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Neobenedenia melleni (MacCallum, 1927) (Monogenea) is a widespread pathogen in marine teleost cultures all over the world. The present paper reports this parasite species in farmed cobia (Rachycentron canadum) in Brazil, for the first time. Some comments on preventive actions for avoiding the disease are made.

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4

المختار, مصطفى احمد. "Rachycentron canadum (Linnaeus, 1766) ,Rachycentridae وأھميتھا الاستزراع المائي البحري". IRAQI JOURNAL OF AQUACULTURE 8, № 1 (2011): 1–14. http://dx.doi.org/10.21276/ijaq.2011.8.1.1.

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5

Sajeevan, M.K., and Kurup B. Madhusoodana. "Osteological features of Cobia, Rachycentron canadum (Linnaeus 1766)." Journal of the Ocean Science Foundation, no. 11 (July 14, 2014): 40–49. https://doi.org/10.5281/zenodo.1044547.

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The Cobia, Rachycentron canadum (Linnaeus 1766), is a large, fast-growing coastal pelagic fish belonging to the monotypic family Rachycentridae. In this study, we describe in detail the osteological characters of the Cobia from Indian waters. The skull, appendicular, and axial skeletons were disarticulated, examined, and illustrated. We characterize the species based on morphometry, meristic counts, and osteological features and briefly review the phylogenetic relationships proposed for the species.

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6

Sajeevan, M. K., and B. Madhusoodana Kurup. "Length at first maturity of cobia Rachycentron canadum (Linnaeus, 1766) from north-west coast of India." Indian Journal of Fisheries 64, no. 1 (2017): 72. http://dx.doi.org/10.21077/ijf.2017.64.1.37085-12.

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The length at first maturity of cobia Rachycentron canadum (Linnaeus, 1766) was estimated from 292 specimens collected during exploratory surveys along the north-west coast of India and from fish landing centres in Mumbai, Maharashtra. Length and age at first maturity of male and female were estimated as 63 and 70 cm and 1.5 and 1.75 years respectively.

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7

Liu, K., Q. H. Ai, K. S. Mai, W. B. Zhang, L. Zhang, and S. X. Zheng. "Dietary manganese requirement for juvenile cobia,Rachycentron canadumL." Aquaculture Nutrition 19, no. 4 (2012): 461–67. http://dx.doi.org/10.1111/j.1365-2095.2012.00979.x.

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8

Crear, Daniel P., Brian E. Watkins, Vincent S. Saba, et al. "Contemporary and future distributions of cobia, Rachycentron canadum." Diversity and Distributions 26, no. 8 (2020): 1002–15. http://dx.doi.org/10.1111/ddi.13079.

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9

Petersen, Elizabeth H., Tran Dinh Luan, Dam Thi My Chinh, et al. "BIOECONOMICS OF COBIA,RACHYCENTRON CANADUM, CULTURE IN VIETNAM." Aquaculture Economics & Management 18, no. 1 (2014): 28–44. http://dx.doi.org/10.1080/13657305.2014.855953.

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10

Ren, Mingchun, Qinghui Ai, and Kangsen Mai. "Dietary arginine requirement of juvenile cobia (Rachycentron canadum)." Aquaculture Research 45, no. 2 (2012): 225–33. http://dx.doi.org/10.1111/j.1365-2109.2012.03218.x.

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11

Zhou, Qi-Cun, Zao-He Wu, Shu-Yan Chi, and Qi-Hui Yang. "Dietary lysine requirement of juvenile cobia (Rachycentron canadum)." Aquaculture 273, no. 4 (2007): 634–40. http://dx.doi.org/10.1016/j.aquaculture.2007.08.056.

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12

Mai, Kangsen, Lindong Xiao, Qinghui Ai, et al. "Dietary choline requirement for juvenile cobia, Rachycentron canadum." Aquaculture 289, no. 1-2 (2009): 124–28. http://dx.doi.org/10.1016/j.aquaculture.2009.01.016.

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13

Watson, Aaron M., and G. Joan Holt. "Energy Budget of Early Juvenile Cobia, Rachycentron canadum." Journal of the World Aquaculture Society 41 (May 2010): 224–34. http://dx.doi.org/10.1111/j.1749-7345.2010.00362.x.

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14

Dippold, David A., Robert T. Leaf, James S. Franks, and J. Read Hendon. "Growth, mortality, and movement of cobia (Rachycentron canadum)." Fishery Bulletin 115, no. 4 (2017): 460–72. http://dx.doi.org/10.7755/fb.115.4.3.

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15

De Castro, Luciana Antônia Araújo, Toivi Masih Neto, Eveline Alexandre Paulo, and Manuel Antonio De Andrade Furtado Neto. "AVALIAÇÃO DO RENDIMENTO DOS FILÉS E RESÍDUOS DA FILETAGEM DO BEIJUPIRÁ CULTIVADO E SELVAGEM." Arquivos de Ciências do Mar 50, no. 1 (2017): 15. http://dx.doi.org/10.32360/acmar.v50i1.18819.

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Apesar do potencial de cultivo do beijupirá (Rachycentron canadum), quando se fala em processamento desta espécie de peixe marinho, os conhecimentos de vários aspectos da cadeia produtiva ainda são escassos. O objetivo do presente estudo foi de avaliar o rendimento dos filés e dos resíduos da filetagem do beijupirá selvagem e cultivado, considerando-se o rendimento das vísceras (RVI), rendimento da cabeça (RCA), rendimento da carcaça sem a cabeça (RCR), rendimento do filé inteiro sem pele (RFI), rendimento da pele com escamas (PPE) e o rendimento da barriga (PBA). Foram utilizados doze exemplares de Beijupirá (Rachycentron canadum) com peso médio 2.435 g sendo seis selvagens adquiridos no comércio local do município de Itarema, estado do Ceará, e os outros seis cultivados obtidos da Fazenda de Maricultura de Búzios, localizada em Ilhabela, estado de São Paulo. Os peixes foram eviscerados, decapitados e filetados manualmente. Os resultados obtidos possibilitaram concluir que não houveram diferenças significativas para o rendimento do filé, vísceras, cabeça e pele entre os beijupirás selvagens e de cultivo. Porém, foram observadas diferenças significativas para os rendimentos da carcaça e do corte da barriga.

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16

Pedrosa, V. F., L. A. Romano, F. L. dos Santos, J. M. Guimarães, A. D. R. da Silva, and E. S. Mendes. "Hiperplasia em túnicas de artérias coronárias de beijupirás criados em sistema offshore." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 67, no. 3 (2015): 747–54. http://dx.doi.org/10.1590/1678-4162-7497.

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As lesões coronarianas já foram relatadas em espécies de peixes anádromos, com características semelhantes às observadas em aterosclerose humana, mas não em peixes cultivados sem interferência de padrões reprodutivos. Objetivou-se descrever lesões coronarianas em beijupirá (Rachycentron canadum) criado em sistema offshore, em 54 exemplares coletados ao longo do cultivo de oito meses. Amostras de tecido cardíaco de alevinos e juvenis foram submetidas à análise histopatológica e à microscopia eletrônica de transmissão (MET), para visualização de lesões coronarianas, sendo as lâminas histológicas coradas pela técnica de hematoxilina-eosina, ácido periódico de Schiff, alcian blue e reticulina de Gomori. Exames realizados pela fotomicroscopia de luz evidenciaram lesões arteriais caracterizadas por hiperplasia das túnicas íntima e média de artérias coronárias em, respectivamente, 29,63% e 79,63% dos animais, com redução do lúmen arterial. Na MET, foram observadas alterações na estrutura das coronárias com espessamento do endotélio e membrana basal, proliferação de fibroblastos e fibras colágenas, com acúmulo de material lipídico subendotelial, resíduos celulares aderidos à membrana basal e vesículas pinocitóticas com presença de lisossomos isolados. Constatou-se que os peixes da espécie Rachycentron canadum criados em cativeiro desenvolvem lesão arterial do tipo crônica degenerativa inflamatória.

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17

Babatunde Taofik, Ademola. "Enhancement of aquaculture performance of cobia, Rachycentron canadum (Linnaeus 1766): A review." International Journal of Aquaculture and Fishery Sciences 10, no. 1 (2024): 001–8. http://dx.doi.org/10.17352/2455-8400.000090.

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Cobia, Rachycentron canadum, is a marine fish with recognized potential for aquaculture due to its fast growth rate, high fecundity, disease resistance, and quality flesh. However, much progress has been made to overcome problems associated with aspects of cobia production, including broodstock management, fingerling production, larval-rearing, grow-out, and disease management, though, an effort is needed to ensure its sustainability. Broodstock conditioning protocols for continuous spawning as well as induced spawning via hormonal injection resulted in all-year-round seed production in cobia, but detailed information on the cost-effective dosages of various spawning hormones for maximum fecundity and larval survival needs to be investigated. Selective breeding, the application of genetics in trait selection, and the use of molecular markers could produce more viable strains to mitigate high mortality, particularly in colder climates. In addition, considering the fact cobia are carnivorous fish with a high protein requirement, it will be necessary to investigate fishmeal alternatives to reduce feeding costs. Low salinity pond culture may become a reality in the future if the cobia metabolism-physiology of nutrition at various levels of salinity is well understood. The present paper provides information on some of the options for optimizing the aquaculture performance of Rachycentron canadum.

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18

XIAO, L. D., K. S. MAI, Q. H. AI, et al. "Dietary ascorbic acid requirement of cobia, Rachycentron canadum Linneaus." Aquaculture Nutrition 16, no. 6 (2010): 582–89. http://dx.doi.org/10.1111/j.1365-2095.2009.00695.x.

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19

Fraser, Thomas W. K., and Simon J. Davies. "Nutritional requirements of cobia,Rachycentron canadum(Linnaeus): a review." Aquaculture Research 40, no. 11 (2009): 1219–34. http://dx.doi.org/10.1111/j.1365-2109.2009.02215.x.

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20

Faulk, Cynthia K., and G. Joan Holt. "Lipid Nutrition and Feeding of Cobia Rachycentron canadum Larvae." Journal of the World Aquaculture Society 34, no. 3 (2003): 368–78. http://dx.doi.org/10.1111/j.1749-7345.2003.tb00074.x.

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21

Dhanasekar, Krishnamoorthy, Narasimman Selvakumar, and Natesan Munuswamy. "Ultrastructure of spermatozoa in cobia, Rachycentron canadum (Linnaeus, 1766)." Animal Reproduction Science 189 (February 2018): 43–50. http://dx.doi.org/10.1016/j.anireprosci.2017.12.005.

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22

Zhou, Qi-Cun, Zao-He Wu, Bei-Ping Tan, Shu-Yan Chi, and Qi-Hui Yang. "Optimal dietary methionine requirement for Juvenile Cobia (Rachycentron canadum)." Aquaculture 258, no. 1-4 (2006): 551–57. http://dx.doi.org/10.1016/j.aquaculture.2006.03.035.

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23

Hamid, Fatin Maisarah, Nur Aina Syahirah Shaharuddin, Nur Fatin Najihah Noor Salehi, et al. "POTENTIAL OF COBIA (Rachycentron Canadum) IN MALAYSIA: A REVIEW." International Journal of Innovation and Industrial Revolution 7, no. 21 (2025): 116–25. https://doi.org/10.35631/ijirev.721007.

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The Rachycentron canadum, more often referred to as the Cobia, is a pelagic fish that migrates and is found in tropical and subtropical oceans. This species, belonging to the Perciformes order, has been commercially farmed since the late 1990s due to its fast growth rate, high-quality meat, and tolerance to temperature and salinity fluctuations. The majority of commercial manufacturing takes place in China and Taiwan, with China being the primary location. R. canadum is a highly migratory species, often associated with structures like buoys, oil rigs, and shipwrecks for shelter and prey. Its high nutritional value, including 18% to 21% protein content, omega-3 fatty acids, and essential vitamins and minerals like vitamin D, vitamin B12, selenium, and phosphorus, contributes to its ecological role as both predator and prey in marine ecosystems. Commercialization opportunities for R. canadum include rapid development and high-quality white flesh, with operations in the Americas, Vietnam, Thailand, the USA, Australia, and other regions. The International Union for Conservation of Nature (IUCN) does not categorize the R. canadum as vulnerable or endangered, but it is classified as a species of least concern.

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24

OTERO, ADRIANA P. S., RICARDO V. RODRIGUES, LUÍS A. SAMPAIO, LUIS A. ROMANO, and MARCELO B. TESSER. "Thyroid gland development in Rachycentron canadum during early life stages." Anais da Academia Brasileira de Ciências 86, no. 3 (2014): 1507–16. http://dx.doi.org/10.1590/0001-3765201420130187.

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The aim of this study was to describe the ontogeny of thyroid follicles in cobia Rachycentron canadum. Larvae were sampled daily (n=15 - 20) from hatching until 15 dah (days after hatching). Following, larvae were sampled every two days by 28 dah; a new sample was taken at 53 dah. The samples were dehydrated, embedded in Paraplast, and sections of 3 µm were dewaxed, rehydrated and stained with HE and PAS. A single follicle was already present 1 dah and three follicles were found 8 dah. The number of follicles increased up to 19 on 53 dah. The diameter of follicles and follicular cell height were lower 1 dah (6.83 ± 1.00 and 4.6 ± 0.01 µm), but increased from 8 dah (24.03 ± 0.46 µm e 6.43 ± 0.46 µm). From 8 dah, the presence of reabsorption vesicles was observed in the colloid and from the 19 dah some follicles did not present colloid. The early thyroid follicle appearance in cobia larvae as well as the high quantity of follicles without colloid and/or with vesicles even after the metamorphosis, might be the explanation of the fast growth of the cobia.

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25

CALIXTO, Flávia Aline Andrade, Giselle Eler Amorim DIAS, Juliana de Lima Brandão GUIMARÃES, Eduardo da Silva MACHADO, Juliana Tomaz Pacheco LATINI, and Eliana de Fátima Marques de MESQUITA. "Analysis of the chemical properties of salted cobia (Rachycentron canadum)." Food Science and Technology 40, suppl 2 (2020): 722–27. http://dx.doi.org/10.1590/fst.32319.

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26

LIU, Kai, Kang-sen MAI, Qing-hui AI, et al. "Dietary pyridoxine requirement for juvenile cobia(Rachycentron canadum)." JOURNAL OF FISHERIES OF CHINA 34, no. 2 (2010): 307–14. http://dx.doi.org/10.3724/sp.j.1231.2010.05933.

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27

Nguyen, Huy Quang, Helge Reinertsen, Turid Rustad, Thien Mai Tran, and Elin Kjørsvik. "Evaluation of egg quality in broodstock cobia Rachycentron canadum L." Aquaculture Research 43, no. 3 (2011): 371–85. http://dx.doi.org/10.1111/j.1365-2109.2011.02840.x.

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28

Benetti, Daniel D., Bruno Sardenberg, Aaron Welch, Ronald Hoenig, M. Refik Orhun, and Ian Zink. "Intensive larval husbandry and fingerling production of cobia Rachycentron canadum." Aquaculture 281, no. 1-4 (2008): 22–27. http://dx.doi.org/10.1016/j.aquaculture.2008.03.030.

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29

Cnaani, Avner, and Ewen McLean. "Time-course response of cobia (Rachycentron canadum) to acute stress." Aquaculture 289, no. 1-2 (2009): 140–42. http://dx.doi.org/10.1016/j.aquaculture.2008.12.016.

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30

Nhu, Van Can, Huy Quang Nguyen, Thanh Luu Le, et al. "Cobia Rachycentron canadum aquaculture in Vietnam: Recent developments and prospects." Aquaculture 315, no. 1-2 (2011): 20–25. http://dx.doi.org/10.1016/j.aquaculture.2010.07.024.

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31

Colburn, Heidi R., Abigail B. Walker, David L. Berlinsky, and George C. Nardi. "Factors Affecting Survival of Cobia,Rachycentron canadum, during Simulated Transport." Journal of the World Aquaculture Society 39, no. 5 (2008): 678–83. http://dx.doi.org/10.1111/j.1749-7345.2008.00205.x.

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32

Aliabadi, M. A. Salari, S. Rezvani Gilkolaei, A. Savari, H. Zolgharnei, and S. M. B. Nabavi. "Microsatellite Polymorphism in Iranian Populations of Cobia (Rachycentron canadum G.)." Biotechnology(Faisalabad) 7, no. 4 (2008): 775–80. http://dx.doi.org/10.3923/biotech.2008.775.780.

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33

Byadgi, Omkar, Chin-I. Chang, Jai-Wei Lee, Chih-Chun Jean Huang, and Ta-Chih Cheng. "Immunostimulatory effects of non-CpG oligodeoxynucleotides on cobia (Rachycentron canadum)." Aquaculture International 24, no. 2 (2015): 595–608. http://dx.doi.org/10.1007/s10499-015-9950-3.

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34

Motta, J. H. S., A. B. Souza, M. F. Polese, et al. "The effect of feeding frequency on the performance of juvenile cobia (Rachycentron canadum)." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 75, no. 4 (2023): 759–64. http://dx.doi.org/10.1590/1678-4162-12969.

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35

Mizher, Jawad A., and Atheer H. Ali. "First Record of Two Parasitic Helminths from Cobia Rachycentron canadum (L.) (Carangiformes, Rachycentridae) from Iraqi Marine Waters." Basrah Journal of Agricultural Sciences 34, no. 2 (2021): 133–46. http://dx.doi.org/10.37077/25200860.2021.34.2.11.

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A total of 14 specimens of Cobia Rachycentron canadum (L.) were caught from Iraqi marine waters during the period from October 2019 till May 2020. Two parasitic helminths (One species each of nematode and acanthocephalan) were isolated from alimentary canal of the cobia. These are the adults of Iheringascaris inquies (Linton, 1901) Deardorff & Overstreet, 1980 and Serrasentis sagittifer Linton, 1889. The record of these worms, from this fish, is considered as the first record in Iraq. Adequate description of both I. inquies and adult S. sagittifer from cobia for the first time in the Arabian Gulf is given.

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36

de Melo, Fúlvio Viegas Santos Teixeira, Carlos Eduardo Copatti, José Fernando Bibiano Melo, Manoel Adriano da Cruz Neto, Giuliana Parisi, and Elisabete Maria Macedo Viegas. "Effects of Electronarcosis on Frozen Fillets Quality of Cobia (Rachycentron canadum)." Journal of Aquatic Food Product Technology 30, no. 3 (2021): 283–95. http://dx.doi.org/10.1080/10498850.2021.1881676.

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37

Ogawa, Kazuo, Junko Miyamoto, Han-Ching Wang, Chu-Fang Lo, and Guang-Hsiung Kou. "Neobenedenia girellae (Monogenea) Infection of Cultured Cobia Rachycentron canadum in Taiwan." Fish Pathology 41, no. 2 (2006): 51–56. http://dx.doi.org/10.3147/jsfp.41.51.

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38

Romdlianto, Muslim, and Slamet Haryanto. "TEKNIK PENGENDALIAN PARASIT EKSTERNAL PADA PEMELIHARAAN INDUK IKAN COBIA, Rachycentron canadum." Buletin Teknik Litkayasa Akuakultur 6, no. 1 (2017): 25. http://dx.doi.org/10.15578/blta.6.1.2007.25-28.

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Ikan cobia, Rachycentron canadum merupakan salah satu spesies ikan subtropis dan tropis yang mempunyai pertumbuhan sangat cepat dibandingkan jenis ikan lainnya. Dalam upaya domestikasi induk ikan cobia dalam bak secara terkontrol di hatcheri, banyak sekali mengalami kendala, di antaranya ikan cobia sangat peka dengan perubahan lingkungan. Selain itu, ikan cobia sangat mudah sekali terinfeksi parasit eksternal yang menyebabkan ikan luka-luka, borok, buta, dan mati. Di hatcheri Balai Besar Riset Perikanan Budidaya Laut, Gondol parasit eksternal yang menginfeksi ikan cobia telah diidentifikasi yaitu Cryptocarion irritans dan Neobedenia sp. Upaya pengendalian parasit eksternal tersebut telah dilakukan dengan cara pemutusan siklus hidup parasit, di treatment dengan air tawar dan anti parasit. Teknik pengendalian parasit eksternal yang telah dilakukan mampu untuk mengurangi infeksi parasit pada ikan cobia dalam masa domestikasi.

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39

Peregrino Jr., R. B., S. Hamilton, E. C. Domingues, J. C. Manzella Jr., F. H. V. Hazin, and R. O. Cavalli. "Desempenho reprodutivo do beijupirá (Rachycentron canadum) capturado no litoral de Pernambuco." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 66, no. 3 (2014): 681–87. http://dx.doi.org/10.1590/1678-41625794.

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O desempenho reprodutivo de exemplares selvagens de beijupirá capturados no litoral de Pernambuco e aclimatados ao cativeiro foi avaliado durante 10 meses. Um plantel composto por duas fêmeas (peso de 14 a 16kg) e quatro machos (cerca de 12kg) mantidos em um único tanque de 70t produziu 48,7 milhões de ovos no período de outubro a junho. As fêmeas foram capazes de desovar 21 vezes, com uma frequência média (±DP) de uma desova a cada 11,9 dias (±2,9). Em média, cada desova produziu 2,4 milhões de ovos, com fertilização de 52,4%, o que resultou em aproximadamente 1,0 milhão de larvas por desova. Os resultados demonstram a viabilidade da metodologia empregada na formação do plantel e no manejo de reprodutores e confirmam a relativa facilidade de obtenção de desovas espontâneas do beijupirá em cativeiro. Também foi confirmado que o período reprodutivo dessa espécie em cativeiro se estende além do observado na natureza. Este é o primeiro relato sobre o desempenho reprodutivo do beijupirá em cativeiro no Brasil.

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40

Chou, Ruey-Liang, Mao-Sen Su, and Houng-Yung Chen. "Optimal dietary protein and lipid levels for juvenile cobia (Rachycentron canadum)." Aquaculture 193, no. 1-2 (2001): 81–89. http://dx.doi.org/10.1016/s0044-8486(00)00480-4.

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41

Silva, Roberto S. G., Sidney F. Bandeira, and Luiz A. A. Pinto. "Characteristics and chemical composition of skins gelatin from cobia (Rachycentron canadum)." LWT - Food Science and Technology 57, no. 2 (2014): 580–85. http://dx.doi.org/10.1016/j.lwt.2014.02.026.

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42

Duncan, M., S. R. Craig, Angela N. Lunger, D. D. Kuhn, G. Salze, and E. McLean. "Bioimpedance assessment of body composition in cobia Rachycentron canadum (L. 1766)." Aquaculture 271, no. 1-4 (2007): 432–38. http://dx.doi.org/10.1016/j.aquaculture.2007.06.002.

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Faulk, Cynthia K., and G. Joan Holt. "Biochemical composition and quality of captive-spawned cobia Rachycentron canadum eggs." Aquaculture 279, no. 1-4 (2008): 70–76. http://dx.doi.org/10.1016/j.aquaculture.2008.03.050.

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Zhou, Qi-Cun, Bei-Ping Tan, Kang-Sen Mai, and Yong-Jian Liu. "Apparent digestibility of selected feed ingredients for juvenile cobia Rachycentron canadum." Aquaculture 241, no. 1-4 (2004): 441–51. http://dx.doi.org/10.1016/j.aquaculture.2004.08.044.

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Caylor, Robert E., Patricia M. Biesiot, and James S. Franks. "Culture of cobia (Rachycentron canadum): cryopreservation of sperm and induced spawning." Aquaculture 125, no. 1-2 (1994): 81–92. http://dx.doi.org/10.1016/0044-8486(94)90285-2.

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SOUZA, André B., Jonas H. S. MOTTA, Marcelo F. POLESE, et al. "Effect of feeding restrictions on development of juvenile cobias, Rachycentron canadum." Spanish Journal of Agricultural Research 21, no. 3 (2023): e0606. http://dx.doi.org/10.5424/sjar/2023213-20244.

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Aim of study: A 45-day trial was conducted to evaluate fasting as a possible way of food strategy during production of juvenile cobias (Rachycentron canadum). Area of study: The study was conducted in the State of Espírito Santo, Brazil. Material and methods: The following different protocols were used to organize their feeding: C, fish fed to satiety twice a day for 45 days; U1, fish fed to satiety twice a day on alternate days; U2, fish fed to satiety twice daily for five consecutive days, followed by two days of food deprivation, cyclically; U5, fish subjected to food deprivation for five days and then fed to satiety twice a day for 40 days; U10, fish subjected to food deprivation for ten days and then fed to satiety twice a day for 35 days; and U15, fish subjected to food deprivation for fifteen days and then fed to satiety twice a day for 30 days. Main results: No mortality was observed during the trial period. The different feeding protocols significantly affected juvenile cobias development and wellbeing. The final weight (g) of cobia juveniles was C – 91.9 ± 9.1; U1 – 75.0 ± 11.2; U2 – 72.2 ± 6.0; U5 – 70.3 ± 6.1; U10 – 63.4 ± 4.6; U15 – 54.4 ± 4.7. No compensatory growth was observed during the entire experimental period. Research highlights: Continuous fasting had a more severe effect than intermittent fasting. Significantly greater hepatocyte counts were correlated with longer fasting periods. Fasting protocols should not be recommended for juvenile cobias.

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González, Roy, Adriana Bermúdez, and Gabriel Navas. "Determination of sexual dimorphism using morphometric techniques in Rachycentron canadum (Perciformes: Rachycentridae) cultivated in captivity." Boletín de Investigaciones Marinas y Costeras 50, no. 1 (2021): 79–90. http://dx.doi.org/10.25268/10.25268/bimc.invemar.2021.50.1.999.

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Rachycentron canadum is an economically important fish in aquaculture due to its resistance to environmental variations, the feasibility of culture in confinement, high growth rates, and good acceptance by consumers. The profitability of their cage culture is negatively affected by the difficulty of implementing monosex cultures due to the apparent similarity between sexes. In this study, morphometric techniques were used to determine sexual dimorphism by analyzing measurements and the fish’s shape. Differences were found between the sexes in the position of the eyes, lips, pectoral fin and ventral fin, and the body’s general shape. The sexing precision of the individuals was 75.4 % with distances and 82.7 % with geometric morphometry.

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Zarzar, C. A., R. O. Cavalli, P. R. B. Santos, and T. D. Trombeta. "Effect of different diet pellet sizes on the growth of juvenile cobia (Rachycentron canadum)." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 74, no. 4 (2022): 677–85. http://dx.doi.org/10.1590/1678-4162-12543.

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ABSTRACT It is known that there is a close relationship between pellet feed size and fish growth. However, the magnitude of this relationship regarding an animals’ feed efficiency is not yet clear. Therefore, the present study conducted at the Virginia Tech - Virginia Seafood Agricultural Research and Extension Center (USA), investigated the effects of three different pellet feed sizes, 1.7mm (EP.1), 2.3 mm (EP.2) and 3.1 mm (EP.3), on the growth of Cobia (Rachycentron canadum) in a recirculating aquaculture system (RAS). Animals were farmed for 55 days in 77.5-liter tanks (6 fish with an initial density of 3.78 g L⁻¹) weighing approximately 41.83±1.24g. The results showed that during the 8-week culture period, there were no significant differences between the animal’s final weight over the different pellet feed sizes (EP.1 - 952.5±40.7g; EP.2 - 1014.5±26.6g; EP.3 - 1030.0±54.8g). However, biomass gain showed significant differences (EP.1 - 704.0±34+.3g; EP.2 - 763.0±27.8g; EP.3 -776.5±51.9g). Consequently, significant differences were also found in the feed conversion factors.

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Cavalli, Ronaldo Olivera. "DESENVOLVIMENTO GONADAL DO BEIJUPIRÁ, Rachycentron canadum, CRIADO EM MAR ABERTO EM PERNAMBUCO." Revista Brasileira de Engenharia de Pesca 12, no. 1 (2020): 1–11. http://dx.doi.org/10.18817/repesca.v12i1.1889.

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Este estudo analisou o desenvolvimento gonadal do beijupirá (Rachycentron canadum) criado em gaiolas flutuantes na plataforma continental de Pernambuco a fim de averiguar a possibilidade desses indivíduos se reproduzirem. Dos 132 exemplares amostrados entre janeiro e setembro de 2011, o comprimento total (CT) variou entre 26,2 e 61,0 cm, e o peso total (PT), entre 121 e 2.436 g. A proporção macho/fêmea foi de 1:1 e o índice gonadossomático (IGS) médio das fêmeas variou entre 0,37 e 1,38, sendo o maior valor classificado como em maturação final. Para os machos, os IGS médios oscilaram entre 0,25 e 0,62. A distribuição do CT e PT entre machos e fêmeas não apresentaram diferenças significativas. Foram encontrados machos em estágios imaturos, em maturação e maduros. Embora o período de criação relativamente curto (9 meses) não tenha permitido a amostragem de fêmeas plenamente maduras, os resultados indicam a possibilidade de reprodução de beijupirás criados intensivamente em gaiolas flutuantes no mar aberto de Pernambuco. O desenvolvimento dessa atividade deve considerar estratégias que minimizem ou evitem as fugas de ovos e/ou larvas para o ambiente natural.

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Moreira, Cauê Bonucci, Gabriela Sayuri de Oliveira Hashimoto, Artur Nishioka Rombenso, Fernanda Braz Candiotto, Maurício Laterça Martins, and Mônica Yumi Tsuzuki. "Outbreak of mortality among cage-reared cobia (Rachycentron canadum) associated with parasitism." Revista Brasileira de Parasitologia Veterinária 22, no. 4 (2013): 588–91. http://dx.doi.org/10.1590/s1984-29612013000400021.

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This study reports a disease outbreak among juvenile cobia (Rachycentron canadum) farmed in cages in the state of Rio de Janeiro, Brazil, caused by the dinoflagellate Amyloodinium ocellatum and the monogenean Neobenedenia melleni. Two thousand five hundred fish were stocked at 0.4 kg/m3 in a set of 12 m3 tanks, in autumn (mean weight 15.0 ± 7.3 g) and in winter (mean weight 43.0 ± 5.6 g). Freshwater baths were administered as a routine treatment, as the symptoms were detected followed by two collection samples. Firstly in May 2011 (n = 5) and secondly in September 2011 (n = 10). In the first sample, the prevalence of N. mellenion the body surface was 100% and the mean intensity was 42.0 ± 1.7, while in the second sample the prevalence was 60% with a mean intensity 3.0 ± 0.2 and mean abundance 1.8 ± 0.4. Amyloodinium ocellatum was only found in the second sample, at a prevalence 100% and mean intensity 46.8 ± 3.4. The cause of fish mortality was possibly associated with a decrease in fish resistance after the first contact with monogenean parasites, allied with respiratory difficulty caused by the presence of A. ocellatum in the gills.

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