Please use this identifier to cite or link to this item:
Title: Ultrastructural and morphometric analysis of gametes in neotropical teleost fishes
Keywords: Peixes - Gametas
Peixes - Biologia reprodutiva
Peixes - Melhoramento genético
Fish - Gametes
Fish - Reproductive biology
Fish - Genetic improvement
Issue Date: 2017
Publisher: Insight Medical Publishing
Citation: MURGAS, L. D. S. et al. Ultrastructural and morphometric analysis of gametes in neotropical teleost fishes. Journal of, [S. l.], v. 11, n. 1, p. 56-61, 2017.
Abstract: This study was designed to identify and measure the gametes of neotropical fish using ultrastructural analysis. Number, shape and size of micropyle and ultrastructure of egg membrane and of the micropyle canal; the number and length of the longest and shortest ridge in the micropyle region beyond the structures of the sperm cell have been used as taxonomic tool in ichthyology . Gametes of six breeding pairs of Piaractus mesopotamicus, Brycon orbignyanus, Salminus brasiliensis and Prochilodus lineatus were collected, fixed and subjected to scanning electron microscopy for the observation and measurement of the structures. The results showed many similarities between the gametes of the studied species. An array of grooves and folds was observed in the micropyle in all species but not in the Prochilodus lineatus oocytes. The micropyle was funnel-shaped in all species. The oocytes showed a great variation in the diameters of major and minor micropyle ostium, evidencing different reproductive strategies. The sperm cells showed simple structures with ovoide heads, a cylindrical midpiece with a single flagellum and no acrosome. This study may contribute to a better understanding of fish reproductive biology, conservation genetics and breeding studies.
Appears in Collections:DFP - Artigos publicados em periódicos

Files in This Item:
File Description SizeFormat 
ARTIGO_Ultrastructural and morphometric analysis of gametes in neotropical teleost fishes.pdf695,77 kBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons

Admin Tools