Data/hora: 11/06/2024 17:34:18

Provedor de dados: | 45
País: | Brazil
Título: | Morphological characteristics of ovarian development of two Nile tilapia (Oreochromis niloticus) strains in mixed-culture systems
Autores: | Neves,P.R.; Natali,M.R.M.; Ribeiro,R.P.; Vargas,L.; Maehana,K.R.; Marengoni,N.G.
Data: | 2009-10-01
Ano: | 2009
Palavras-chave: | Oreochromis niloticus; Morphology; Ovarian development; Strain.
Resumo: | This study was carried out to morphologically characterize and classify the stages of gonad development in different Nile tilapia strains (Oreochromis niloticus). Eighty-four and ninety-two ovaries from Bouaké and Chitralada strains, respectively, were evaluated at different ovarian developmental phases: initial (104 days of culture), intermediate (152 days of culture), and the final (279 days of culture). The ovaries were microscopically evaluated and submitted to histological processing and hematoxylin-eosin staining to determine their characteristics and be classified. No morphological differences in ovaries between strains were observed during the initial phase (stage A - immature). During the intermediate growing phase, higher gonad development was observed for Chitralada strain (stage B - maturation) in comparison with Bouaké strain (stage A - immature). During the final growing phase, no differences between strains were observed for morphological characteristics (stage C - mature). Despite the similarities in reproductive behavior of the Bouaké and Chitralada females at the end of the final growing phase (gain weight phase), differences for macroscopic and microscopic aspects and oocytes during the initial and intermediate growing phases of the strains were observed.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000500021
Editor: | Universidade Federal de Minas Gerais, Escola de Veterinária
Relação: | 10.1590/S0102-09352009000500021
Formato: | text/html
Fonte: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia  v.61 n.5 2009
Fonte: | info:eu-repo/semantics/openAccess