节点文献

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

免费订阅

【作者】 Kailong ZHANGHaojie TONGYubin WONaifa LIUYuanting JIN

【Author】 Kailong ZHANG;Haojie TONG;Yubin WO;Naifa LIU;Yuanting JIN;College of Life Sciences, China Jiliang University;School of Life Sciences, Lanzhou University;

【机构】 College of Life Sciences, China Jiliang UniversitySchool of Life Sciences, Lanzhou University

【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.

【基金】 supported by the National Natural Science Foundation of China (31372183, 31772447, 31471988)
【所属期刊栏目】 ORIGINAL ARTICLE (2018年01期)
  • 【DOI】10.16373/j.cnki.ahr.170024
  • 【分类号】Q954
  • 【下载频次】5
节点文献中: 

本文链接的文献网络图示:

浏览历史:
下载历史: