[1].Sex Ratio and Sexual Size Dimorphism in a Toad-headed Lizard, Phrynocephalus guinanensis[J].Asian Herpetological Research,2018,9(1):35-42.[doi:10.16373/j.cnki.ahr.170024]
 Kailong ZHANG,Haojie TONG,Yubin WO,et al.Sex Ratio and Sexual Size Dimorphism in a Toad-headed Lizard, Phrynocephalus guinanensis[J].Asian Herpetological Research(AHR),2018,9(1):35-42.[doi:10.16373/j.cnki.ahr.170024]
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Sex Ratio and Sexual Size Dimorphism in a Toad-headed Lizard, Phrynocephalus guinanensis()
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

卷:
9
期数:
2018年1期
页码:
35-42
栏目:
出版日期:
2018-03-25

文章信息/Info

Title:
Sex Ratio and Sexual Size Dimorphism in a Toad-headed Lizard, Phrynocephalus guinanensis
文章编号:
AHR-2017-0024
Author(s):
Kailong ZHANG1 Haojie TONG1 Yubin WO1 Naifa LIU2 and Yuanting JIN1*
1 College of Life Sciences, China Jiliang University, Hangzhou 310018, China
2 School of Life Sciences, Lanzhou University, Lanzhou 730000, China
Keywords:
toad-headed lizard mark-recapture sexual size dimorphism growth rate survivorship sex ratio
DOI:
10.16373/j.cnki.ahr.170024
Abstract:
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.

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更新日期/Last Update: 2018-03-27