Data/hora: 05/06/2024 17:07:01

Provedor de dados: | 83
País: | Brazil
Título: | Induced spawning of the endangered Neotropical species Steindachneridion parahybae (Siluriformes: Pimelodidae)
Autores: | Caneppele,Danilo; Honji,Renato M.; Hilsdorf,Alexandre W. S.; Moreira,Renata G.
Data: | 2009-01-01
Ano: | 2009
Palavras-chave: | Surubim do Paraíba; Paraíba do Sul River; Artificial reproduction.
Resumo: | The "surubim do Paraíba" (Steindachneridion parahybae) is a freshwater catfish endemic to the Paraíba do Sul River basin, Brazil. This species has been seriously threatened by environmental disturbances in the last several decades. Wild Steindachneridion parahybae males and females were collected in 2003 and taken to the hatchery of a power plant of the Companhia Energética de São Paulo (CESP). Steindachneridion parahybae broodstocks were artificially induced to reproduce in December 2003 using a combination of carp pituitary extract (CPE) and human chorionic gonadotropin (hCG). Oocytes and milt were stripped; the fertilized eggs were transferred to 60-liter conical incubators and hatched larvae distributed in nine horizontal trays. Exogenous feed was started just after yolk sac absorption. A high rate of cannibalism and photophobia were observed during the larval period, resulting in a 26% survival rate from larvae to fingerlings.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400026
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/S1679-62252009000400026
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.7 n.4 2009
Fonte: | info:eu-repo/semantics/openAccess