Sex Ratio and Sexual Size Dimorphism in a Toad-headed Lizard,Phrynocephalus guinanensis

Sex Ratio and Sexual Size Dimorphism in a Toad-headed Lizard,Phrynocephalus guinanensis

Kailong ZHANG;Haojie TONG;Yubin WO;Naifa LIU;Yuanting JIN

【期刊名称】《亚洲两栖爬行动物研究（英文版）》 【年(卷),期】2024(009)001

【摘要】Phrynocephalus guinanensis has sexual dimorphism in abdominal coloration, but its ontogenetic development of sexual size dimorphism (SSD) is unknown. Using mark-recapture data during four days each year from August from 2014 to 2016, we investigated the development of sex ratios, SSD, sex-specific survivorship and growth rates in a population of P.guinanensis.Our results indicated that the sex ratio of males to females was 1:2.8.Males had a lower survival rate (6%) than females (14%) across the age range from hatchling to adult, which supported the discovered female-biased sex ratio potentially associated with the low survival rate of males between hatchlings and juveniles. Male-biased SSD in tail length and head width existed in adults rather than in hatchling or juvenile lizards. The growth rates in body dimensions were undistinguishable between the sexes during the age from hatchling to juvenile, but the growth rate in head length from juvenile to adult was significantly larger in males than females. Average growth rate of all morphological measurements from hatchling to juvenile were larger compared with corresponding measurements from

juvenile to adult, but only being significant in tail length, head width, abdomen length in females and snout-vent length in males. We provided a case study to strengthen our understanding of the important life history traits on how a viviparous lizard population can survive and develop their morphology in cold climates. 【总页数】8页(35-42) 【关键词】

【作者】Kailong ZHANG;Haojie TONG;Yubin WO;Naifa LIU;Yuanting JIN 【作者单位】College of Life Sciences,China Jiliang University,Hangzhou 310018,China;College of Life Sciences,China Jiliang University,Hangzhou 310018,China;College of Life Sciences,China Jiliang University,Hangzhou 310018,China;School of Life Sciences,Lanzhou University,Lanzhou 730000,China;College of Life Sciences,China Jiliang University,Hangzhou 310018,China 【正文语种】英文 【中图分类】 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_asian-herpetological-research_thesis/0201255398486.html 【相关文献】

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