REPRODUCTIVE BIOLOGY IN FEMALES OF Astyanax scabripinnis Jenyns, 1842 (Characidae; Tetragonopterinae; Teleostei) UNDER CAPTIVITY CONDITIONS

Authors

  • Hélio Paulo Pereira Filho
  • Dalcio Ricardo de Andrade UENF
  • William Cristiane Teles Tonini UENF-RJ
  • Manuel Vazquez Vidal Junior UENF

DOI:

https://doi.org/10.5216/cab.v12i4.2202

Keywords:

Acquaculture

Abstract

We studied the reproductive biology of Astyanax scabripinnis by monitoring oocyte development of 94 adult females. Microscopic analysis of the ovaries, gonadosomatic and hepatosomatic indeces assessment, visceral fat and condition factor evaluations were carried out. The structures observed in the ovaries were described from the histological analysis and the hepatosomatic índex, which were used to determine the involvement of the liver in the development of oocytes of this species. Oogonia, oocyte I and oocyte II were present in all stages of gonadal development. Oocytes with cortical vesicles were present in large quantities in the intermediate stage of maturation (F2B) and in a lesser amount in the final stages of maturation (F2C). Mature oocytes were common in the intermediate stage of maturation (F2B), but prevailed in the final stages of maturation (F2C). Oocytes in final maturation and mature viable oocytes, many atresic and post-ovulation folicles were found in spawned animals, besides the ovary disorganization, which are strong characteristics of spawing. Spawned animals were found throughout the year, showing that the species presents a kind of intermittent spawning.

KEYWORDS: liver, oocyte; reproduction.

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Author Biographies

Dalcio Ricardo de Andrade, UENF

Professor da UENF/CCTA/LZNA

William Cristiane Teles Tonini, UENF-RJ

Biólogo, mestre em zoologia e doutorando em ciência animal

Manuel Vazquez Vidal Junior, UENF

Professor UENF/CCTA/LZNA

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Published

2011-12-20

How to Cite

PEREIRA FILHO, H. P.; DE ANDRADE, D. R.; TONINI, W. C. T.; VIDAL JUNIOR, M. V. REPRODUCTIVE BIOLOGY IN FEMALES OF Astyanax scabripinnis Jenyns, 1842 (Characidae; Tetragonopterinae; Teleostei) UNDER CAPTIVITY CONDITIONS. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 12, n. 4, p. 625–634, 2011. DOI: 10.5216/cab.v12i4.2202. Disponível em: https://revistas.ufg.br/vet/article/view/2202. Acesso em: 22 nov. 2024.

Issue

Vol. 12 No. 4 (2011)

Section

Animal Production

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