亚马逊盆地静水系统中坦克异型鲶（脂鲤科）的生殖生物学。

Reproductive biology of the tiger pleco Panaqolus tankei (Loricariidae) in a lentic system of the Amazon Basin.

机构信息

Institute of Biological Sciences, Universidade Federal do Pará, Rua Augusto Corrêa, Belém, Brazil.

Institute of Geosciences, Universidade Federal do Pará, Rua Augusto Corrêa, Belém, Brazil.

出版信息

J Fish Biol. 2018 Oct;93(4):711-714. doi: 10.1111/jfb.13735.

DOI:10.1111/jfb.13735

PMID:29956325

Abstract

This study presents the first information on the reproduction of the recently described tiger pleco Panaqolus tankei, from Lake Bolonha in the north-eastern Amazon Basin. This loricariid has a long reproductive period, fractionated spawning and low fecundity (on average, female gonads contained 37 oocytes), a total length (L ) at first maturity of 47.4 mm for females and 54.1 mm L for males. Correlation of the condition factor and gonado-somatic index with environmental variables suggests that turbidity favours P. tankei reproduction in this environment.

摘要

本研究首次提供了有关新近描述的亚马逊盆地东北部博洛尼亚湖虎纹魟鲶（Panaqolus tankei）繁殖的信息。这种甲鲶科鱼类具有较长的繁殖期、分批产卵和低生育率（平均而言，雌性性腺中含有 37 个卵母细胞），初次成熟的全长（L）为雌性 47.4 毫米，雄性 54.1 毫米。体型系数和性腺-体指数与环境变量的相关性表明，在这种环境中，浑浊度有利于 P. tankei 的繁殖。