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Early development of the silver catfish Rhamdia quelen (Quoy & Gaimard, 1824) (Pisces:Heptapteridae) from the São Francisco River Basin, Brazil
2008; Wiley; Volume: 40; Issue: 2 Linguagem: Inglês
10.1111/j.1365-2109.2008.02079.x
ISSN1365-2109
AutoresMarcelo Pimenta de Amorim, B. V. C. Gomes, Yuri Simões Martins, Yoshimi Sato, Elizete Rizzo, Nilo Bazzoli,
Tópico(s)Fish Biology and Ecology Studies
ResumoAquaculture ResearchVolume 40, Issue 2 p. 172-180 Early development of the silver catfish Rhamdia quelen (Quoy & Gaimard, 1824) (Pisces:Heptapteridae) from the São Francisco River Basin, Brazil Marcelo Pimenta De Amorim, Marcelo Pimenta De Amorim Graduate Program Zoology of Vertebrates, Pontifical Catholic University of Minas Gerais, BrazilSearch for more papers by this authorBruno Vilaça Campos Gomes, Bruno Vilaça Campos Gomes Graduate Program Zoology of Vertebrates, Pontifical Catholic University of Minas Gerais, BrazilSearch for more papers by this authorYuri Simões Martins, Yuri Simões Martins Graduate Program Zoology of Vertebrates, Pontifical Catholic University of Minas Gerais, BrazilSearch for more papers by this authorYoshimi Sato, Yoshimi Sato Hidrobiology and Hatchery Station of Três Marias, CODEVASF, BrazilSearch for more papers by this authorElizete Rizzo, Elizete Rizzo Institute of Biological Sciences, Federal University of Minas Gerais, BrazilSearch for more papers by this authorNilo Bazzoli, Nilo Bazzoli Graduate Program Zoology of Vertebrates, Pontifical Catholic University of Minas Gerais, BrazilSearch for more papers by this author Marcelo Pimenta De Amorim, Marcelo Pimenta De Amorim Graduate Program Zoology of Vertebrates, Pontifical Catholic University of Minas Gerais, BrazilSearch for more papers by this authorBruno Vilaça Campos Gomes, Bruno Vilaça Campos Gomes Graduate Program Zoology of Vertebrates, Pontifical Catholic University of Minas Gerais, BrazilSearch for more papers by this authorYuri Simões Martins, Yuri Simões Martins Graduate Program Zoology of Vertebrates, Pontifical Catholic University of Minas Gerais, BrazilSearch for more papers by this authorYoshimi Sato, Yoshimi Sato Hidrobiology and Hatchery Station of Três Marias, CODEVASF, BrazilSearch for more papers by this authorElizete Rizzo, Elizete Rizzo Institute of Biological Sciences, Federal University of Minas Gerais, BrazilSearch for more papers by this authorNilo Bazzoli, Nilo Bazzoli Graduate Program Zoology of Vertebrates, Pontifical Catholic University of Minas Gerais, BrazilSearch for more papers by this author First published: 06 January 2009 https://doi.org/10.1111/j.1365-2109.2008.02079.xCitations: 47 Correspondence: Dr N Bazzoli, Programa de Pós-Graduação em Zoologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Av. Dom José Gaspar 500, CEP 30535-610, Belo Horizonte, Minas Gerais, Brazil. E-mail: bazzoli@pucminas.br Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract The silver catfish, Rhamdia quelen, is endemic to North, Central and South America with high aquaculture potential and wide acceptance in the market. Breeder fish were subjected to induced reproduction through hypophysation using a crude common carp pituitary extract. Egg characteristics, oocyte surface ultrastructure and histology of larval ontogenesis until whole yolk resorption were described for the first time for this species. Oocytes and semen were obtained by manual extrusion, and fertilization was conducted using the dry method. After fertilization, eggs were kept in incubators at 24 °C. The embryonic development was monitored using a stereomicroscope every 10 min until hatching. To analyse the larval development, larvae samples were collected from incubators daily until the fifth day, fixed in Bouin's fluid and subjected to routine histological techniques. The oocyte extrusion occurred 8 h after the second hormone dose at 26 °C. The oocytes were spherical, non-adhesive and yellow, with a diameter of 1471.75±47.63 μm. Scanning electron microscopy revealed a thin jelly coat covering the zona radiata in the animal pole around the micropyle. The blastopore closure occurred within 8 h after fertilization, and the fertilization rate was 79.9±5.2% at 24 °C. Embryonic development was completed within 25 h 30 min after fertilization. The complete resorption of the yolk and the formation of the digestive system organs and the mouth opening occurred on the fifth day, indicating a need for exogenous feeding. The results of this study provide information important for improvement in R. quelen culture and management. Citing Literature Volume40, Issue2January 2009Pages 172-180 RelatedInformation
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