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

doi:10.16373/j.cnki.ahr.170024

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 《亚洲两栖爬行动物研究》 > 2018 > Vol.9, No.1

	Sex Ratio and Sexual Size Dimorphism in a Toad-headed Lizard, Phrynocephalus guinanensis
	Yuanting JIN; Naifa LIU; Yubin WO; Haojie TONG; Kailong ZHANG
刊名	Asian Herpetological Research
	2018-03
卷号	9 期号:1 页码:35-42
关键词	toad-headed lizard mark-recapture sexual size dimorphism growth rate survivorship sex ratio
DOI	10.16373/j.cnki.ahr.170024
英文摘要	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.
语种	英语
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/29577]
专题	《亚洲两栖爬行动物研究》_2018_Vol.9, No.1
通讯作者	Yuanting JIN
推荐引用方式 GB/T 7714	Yuanting JIN,Naifa LIU,Yubin WO,et al. Sex Ratio and Sexual Size Dimorphism in a Toad-headed Lizard, Phrynocephalus guinanensis[J]. Asian Herpetological Research ,2018,9(1):35-42.
APA	Yuanting JIN,Naifa LIU,Yubin WO,Haojie TONG,&Kailong ZHANG.(2018).Sex Ratio and Sexual Size Dimorphism in a Toad-headed Lizard, Phrynocephalus guinanensis.Asian Herpetological Research ,9(1),35-42.
MLA	Yuanting JIN,et al."Sex Ratio and Sexual Size Dimorphism in a Toad-headed Lizard, Phrynocephalus guinanensis".Asian Herpetological Research 9.1(2018):35-42.