水生生物学报2018，Vol.42Issue(4)：794-799,6.DOI:10.7541/2018.097
人工驯养鼋繁殖习性研究
REPRODUCTION TRAITS OF CAPTIVE ASIAN GIANT SOFTSHELL TURTLES, PELOCHELYS CANTORII
摘要
Abstract
The Asian giant softshell turtle Pelochelys cantorii (Trionychidae) is seriously endangered and has desig-nated as the first grade of protected animal in China in 1989. In 2000, it has been listed as endangered species by the In-ternational Union for Conservation of Nature (IUCN) Red List of Threatened Species, and put on par along with the Giant panda Ailuropoda melanoleuca and the white-flag dolphin Lipotes vexillifer. This animal typically suffers from gradual reduction in its total population because of inadequate safety, food, and health protections. Sparse data, exten-sively referred in the literature, emphasize on the reproductive for this species, in order to enhance individuals’ know-ledge about the reproduction of P. cantorii. For this purpose, we attempted to study the nesting behavior, clutch size, egg size, incubation period, as well as other reproductive characteristics of 4 adults (2♂, 2♀) under captive conditions from 2015 to 2017. Oviposition season is commenced from May to August; the egg-laying behaviors are typically oc-curred at the night. Clutches are made up of eggs with spherical and rigid shells without parental care behaviors. All adult females laid 5—6 clutches [mean egg number=(42.6±5.3); (32—55); n=21] during the breeding season in 2015 and 2016. In 2016, the mean egg’s mass, egg’s diameter, and mass of the newly hatchings were (16.82±1.99) g (n=476), (3.10±0.18) cm (n=476), and (13.60±0.85) g (n=202), respectively. Analysis of reproductive data obtained by 2016 based on the size and mass of the eggs, which were positively correlated (r=0.916, P＜0.01), showed that there was no significant difference in average size of clutch between these two females (Using analysis of variance (ANOVA), F1,9=0.442, P=0.283). The weight of female No. 1 was more than that of female No. 2, the mass of female No. 1’s egg and newly hatchings were both more than that of female No. 2 as well. The juveniles fed by live fish seedlings could be reared to (510.30±82.77) g in the greenhouse for one year. The achieved findings affiliated with reproduction traits in P. cantorii can shield some light, and those results might be used to improve the conservation of the species.关键词
鼋/繁殖/人工孵化/稚鼋生长Key words
Pelochelys cantorii/Reproductive/Incubation/Hatchings growth分类
农业科技引用本文复制引用
洪孝友,朱新平,陈辰,赵建,叶朝阳,仇全波..人工驯养鼋繁殖习性研究[J].水生生物学报,2018,42(4):794-799,6.基金项目
农业部财政项目--物种资源保护项目(#2130135/2/1)资助 [Supported by the Ministry of Agriculture Financial Project (#2130135/2/1)] （#2130135/2/1）
