2017
DOI: 10.1111/jfb.13339
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Abstract: 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.

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Cited by 4 publications
(2 citation statements)
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References 22 publications
(29 reference statements)
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“…This reproductive strategy seems to be not a rare condition among the Amazonian fish species. Cordeiro et al (2020) and Mendes et al (2017), for example, described mature specimens of Astyanax bimaculatus and Boulengerella cuvieri, along the entire sampling year in Amazonian rivers. Copella arnoldi males also presented a rare type of semicystic spermatogenesis and the Type I spermiogenesis.…”
Section: Discussionmentioning
confidence: 99%
“…This reproductive strategy seems to be not a rare condition among the Amazonian fish species. Cordeiro et al (2020) and Mendes et al (2017), for example, described mature specimens of Astyanax bimaculatus and Boulengerella cuvieri, along the entire sampling year in Amazonian rivers. Copella arnoldi males also presented a rare type of semicystic spermatogenesis and the Type I spermiogenesis.…”
Section: Discussionmentioning
confidence: 99%
“…Females predominated in the M. amazonicum populations in both environments through almost the entire study period. A female-biased sex ratio is common in crustaceans, given the importance of females for the recruitment process, especially in populations that breed continuously (Ayres-Santos, Freitas, & Montag, 2018;Castelo-Branco, Batista, Guerra, Soares, & Peixoto, 2015;Mendes et al, 2017;Mossolin & Bueno, 2002;Sampaio, Silva, Santos, & Sales, 2007). Even so, the males were larger than the females, which may reflect dominance behavior and territoriality, which favor larger individuals (Magalhães, Mossolin, & Mantelatto, 2012;Silva, Frédou, & Filho, 2007).…”
Section: Ta B L Ementioning
confidence: 99%