Data/hora: 04/06/2024 09:37:17

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 17/12/2013
Data da última atualização: | 30/06/2017
Autoria: | NAVARRO, F. K. S. P.; NAVARRO, R. D.; MURGAS, L. D. S.; PEREIRA, M. A. N.; HUNDLEY, G. C.
Afiliação: | Fernanda Keley Silva Pereira Navarro, Universidade de Brasília, Campus Universitário Darcy Ribeiro; Rodrigo Diana Navarro, Universidade de Brasília, Campus Universitário Darcy Ribeiro; Luis David Solis Murgas, ) Universidade Federal de Lavras, Departamento de Medicina Veterinária, Setor de Fisiologia e Farmacologia; Marina Apocalypse Nogueira Pereira, ) Universidade Federal de Lavras, Departamento de Medicina Veterinária, Setor de Fisiologia e Farmacologia; Guilherme Crispim Hundley, Universidade de Brasília, Campus Universitário Darcy Ribeiro.
Título: | Plasma levels of luteinizing hormone and gonadal maturation of lambari females under different photoperiods.
Ano de publicação: | 2013
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 48, n. 8, p. 1064-1070, ago. 2013.
Idioma: | Inglês
Notas: | Título em português: Níveis plasmáticos de hormônio luteinizante e maturação gonadal de fêmeas de lambari sob diferentes fotoperíodos.
Conteúdo: | The objective of this work was to evaluate the effect of photoperiod on luteinizing hormone (LH) plasma levels and gonadal maturation of lambari females. One hundred and twenty adult lambaris, distributed into 12 aquaria of 20 L each, were randomly subjected to three different treatments, in a completely randomized design, and four replicates. Treatments were photoperiods in hours of light (L) and darkness (D): T1, 0 L:24 D; T2, 12 L:12 D; T3, 24 L:0 D. After 40 days, fish were subjected to fasting for 24 hours and, then, anesthetized. Immediately after slaughter, fish were weighed, and their gonads and livers were removed and weighed. Ovaries were weighed and immersed in Bouin?s fixative solution for 24 hours and, then, kept in 70% alcohol until processing the material. Subsequently, the oocyte developmental stage was determined. No significant differences were observed between treatments for final weight, ovary weight, gonadosomatic index (GSI), hepatosomatic index (HSI) and LH levels. In all treatments, lambari females showed maturing ovaries with prevalence of vitellogenic oocytes. Photoperiod does not affect the LH levels and ovarian maturation in lambari females.
Palavras-Chave: | Índice gonadossomático; Índice hepatossomático.
Thesagro: | Astyanax Bimaculatus; Espécie nativa; Ovogenese.
Thesaurus Nal: | Gonadosomatic index; Hepatosomatic index; Indigenous species; Oogenesis.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/94222/1/Plasma-levels-of-luteinizing.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (55395-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS