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Reproductive characteristics of pike‐characids Boulengerella cuvieri (Ctenoluciidae) in the middle Xingu River, Eastern Amazon
Author(s) -
Mendes Y. A.,
Ferreira M. A. P.,
Lobato C. M. C.,
Silva G. M. F.,
Montag L. F. A.,
Rocha R. M.
Publication year - 2017
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.13339
Subject(s) - pike , amazon rainforest , biology , seasonal breeder , amazon basin , sexual maturity , fishery , sex ratio , reproductive cycle , reproduction , ecology , fish <actinopterygii> , demography , population , sociology
This study evaluated the reproductive characteristics of pike‐characids, Boulengerella cuvieri , during the hydrological cycle in the Xingu River, eastern Amazon. The sex ratio was 1:1 and the gonado‐somatic index and relative frequency of maturation stages indicate a short breeding season of single phase spawning that coincides with a filling and flood period. Mean standard length at first sexual maturity for female B. cuvieri was estimated to be 22·9 cm.