人工饲养条件下黄额闭壳龟的繁殖行为研究

2017—2019年在广西壮族自治区桂林市永福县对7只性成熟(5雌2雄)黄额闭壳龟Cuora galbinifrons的交配与繁殖进行了观察研究,记录人工养殖条件下亲龟的生活、交配及繁殖习性,结合相关研究报导,调整亲龟饲养及龟卵孵化方法,在人工养殖条件下成功繁殖出F_1代个体。结果表明,试验亲龟生长状况良好,体质量年平均增长率达6.37%,交配高峰期为5—6月,产卵期为6—7月。共获得5枚受精卵,2次产卵之间积温为197 230~207 955℃·h,并成功孵化出F_1代稚龟3只,龟卵孵化时间为118~136 d,孵化积温为76 464~88 128℃·h,孵化率60.00%。本研究为黄额闭壳龟的人工饲养繁殖提供了理论依据和实践基础。

Study on the Reproduction Behaviors of Artificial Breeding Cuora galbinifrons

The copulation and reproduction of 7 sexually matured Cuora galbinifrons(5 females and 2 males) were studied in the Yongfu county, Guilin city, Guangxi Zhuang Autonomous Region from 2017 to 2019. By observing and recording the living, mating and breeding habits of C. galbinifrons under artificial breeding conditions, and combining with literatures, the breeding and hatching methods of C. galbinifrons were optimized in this study. The results indicated that the parent C. galbinifrons were in good growth status with annual average weight growth rate of 6.37%. The copulation peak was happened from May to June and the egg laying period was from June to July. Finally, 5 fertilized eggs were obtained and 3 individuals of F1 generation were hatched. The accumulated temperature between the first and the second egg laying periods was 197 230-207 955 ℃·h, and 3 eggs were hatched. The incubation time was 118-136 days and the accumulated hatching temperature was 76 464-88 128 ℃·h. The hatching rate was 60.00%. This study provides theoretical and practical basis for further improving the artificial breeding and reproduction of C. galbinifrons.