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Reproductive characteristics of the Burmese Narrow-headed Softshell Turtle, Chitra vandijki, in captivity

文献类型: 外文期刊

作者: Hong, Xiaoyou 1 ; Zhu, Xinping 1 ; Chen, Chen 1 ; Cai, Xiaodan 1 ; Li, Yongming 3 ; Li, Xinping 4 ;

作者机构: 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Key Lab Trop & Subtrop Fishery Resources Applicat, Minist Agr, Guangzhou, Peoples R China

2.Shanghai Ocean Univ, Coll Life Sci & Technol, Shanghai, Peoples R China

3.Xishuangbanna Indigenous Fish Res & Breeding Ctr, Xishuangbanna, Dai Autonomous, Peoples R China

4.Xishuangbanna Dai Autonomous Prefecture Fishery Te, Xishuangbanna, Dai Autonomous, Peoples R China

关键词: Burmese Narrow-headed Softshell Turtle; captive-breeding; Chitra vandijki; conservation; egg laying; juvenile; threatened species

期刊名称:AMPHIBIAN & REPTILE CONSERVATION ( 影响因子:1.309; 五年影响因子:1.27 )

ISSN: 1083-446X

年卷期: 2022 年 16 卷 2 期

页码:

收录情况: SCI

摘要: purpose of this study was to provide basic data for the breeding biology of Chitra vandijki and to contribute to the conservation of this species. The Burmese Narrow-headed Softshell Turtle, Chitra vandijki, is a CITES Appendix I-listed species, and biological information on wild and captive C. vandijki is relatively scarce. In 2019, we studied the reproductive biology of two C. vandijki specimens (a female and a male) that had been in captivity for approximately 25 years. The oviposition period of the domesticated female C. vandijki was from June to August. The female laid eggs at night, and no egg protection behavior was observed. The female C. vandijki laid five clutches of eggs in a year representing 564 eggs in total, with 100-131 eggs/clutch, and the interval between successive clutches was 9-28 d. The fertilization rate of C. vandijki was 90.4%, and the hatching rate was 38.6%. The eggs were spherical and rigid, with an average mass of 15.04 +/- 0.65 g and an average diameter of 2.96 +/- 0.22 cm. The average hatching period of C. vandijki was 65.3 d at 28.0-29.0 & DEG;C, and the average accumulated incubation temperature was 44,688.6 ?-h. The average mass of newly hatched neonates was 10.51 & PLUSMN; 0.57 g, and the average mass of juvenile C. vandijki reached 150.37 & PLUSMN; 53.86 g after one year of feeding live fry in a greenhouse.

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