Mendes Y A, Ferreira M A P, Lobato C M C, Silva G M F, Montag L F A, Rocha R M
Developmental Biology and Immunohistochemistry Laboratory, Instituto Ciências Biológicas, Universidade Federal do Pará, Rua Augusto Corrêa, 01-Guamá, 66075-110, Belém, Pará, Brazil.
Cellular Ultrastructure Laboratory, Instituto Ciências Biológicas, Universidade Federal do Pará, Rua Augusto Corrêa, 01-Guamá, 66075-110, Belém, Pará, Brazil.
J Fish Biol. 2017 Jul;91(1):346-353. doi: 10.1111/jfb.13339. Epub 2017 May 24.
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.
本研究评估了亚马孙东部欣古河流水文循环期间犬齿脂鲤科鱼类库氏丽脂鲤的繁殖特征。其雌雄比例为1:1，性腺-体指数和成熟阶段的相对频率表明，其繁殖季节较短，为单相产卵，与河流涨水期相吻合。估计雌性库氏丽脂鲤初次性成熟时的平均标准体长为22.9厘米。
