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Data/hora: 11/06/2024 10:15:49

Biological variables of Hypostomus francisci (Siluriformes: Loricariidae) from Itapecerica River, Minas Gerais State, Brazil
Provedor de dados: 42
Autores: SALES,CAMILA F.; DOMINGOS,FABRÍCIO FLÁVIO T.; BRIGHENTI,LUDMILA S.; RIBEIRO,ROSY I.M.A.; SANTOS,HÉLIO B.; THOMÉ,RALPH G.
ABSTRACT Herein we determine for the first time the reproduction parameters and population structure of Hypostomus francisci in the Itapecerica River, São Francisco Basin. A total of 250 specimens was captured quarterly between March 2010 and February 2012. Body weight, total length and weight of the gonads were obtained in the laboratory. Gonad samples were submitted to histological and histochemical techniques. Females with spawning capable ovaries were used to determine the fecundity and relative fecundity. Sex ratio with 1:1.01 (female:male) was observed. Males were more numerous than females for individuals smaller than 170 mm, however the number of females was significantly greater for specimens larger than 330 mm. The length-weight relationship...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fecundity; Gametogenesis; Neotropical freshwater fish; Population structure; Reproduction.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000501603