Sex But Not Altitude, Modulates Phenotypic Covariations Between Growth and Physiological Traits in Adult Asiatic Toads  

作　　者：Ping LI Song TAN Zhongyi YAO Gaohui LIU Jinzhong FU Jingfeng CHEN 

机构地区：[1]CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization,Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,Sichuan,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education,College of Life Sciences,Sichuan University,Chengdu 610065,Sichuan,China [4]Chinese Research Academy of Environmental Sciences,Beijing 100012,China [5]Department of Integrative Biology,University of Guelph,Guelph N1G 2W1,Canada

出　　处：《Asian Herpetological Research》2022年第1期34-42,共9页亚洲两栖爬行动物研究（英文版）

基　　金：financially supported by grants for the Biodiversity Survey and Assessment Project of the Ministry of Ecology and Environment of China (2019HJ2096001006) to J. F. CHEN;the National Natural Science Foundation of China (31370431) to,the National Natural Science Foundation of China (31729003) to J. F. CHEN;the Sichuan Provincial Science and Technology Department (2018JY0617) to J. F. CHEN。

摘　　要：The pace-of-life syndrome(POLS) hypothesis predicts that most variation in life history, physiology,and behavior among individuals, popula tions, and species falls along a continuum from slow to fast pace of life. While there is evidence for climatic gradientmediated POLS patterns among species, this approach has rarely been explicitly used to study POLS patterns among-and within-populations. In addition, the roles of sex in POLS evolution among-or within-populations are largely unknown. In this study, we investigated the effects of altitudinal gradient and sex on the covariations between growth rate and several physiological traits closely associated with POLS(blood glucose, baselineand stress-induced glucocorticoids(GCs), hemolysis and hemagglutination) in the Asiatic toad Bufo gargarizans.Contrary to our expectation, altitudinal gradient had no influence on the covariations between growth rate and physiological traits, neither at the among-nor withinpopulation level, indicating that these trait integrations have similar fitness payoffs across hierarchical levels.In contrast, we found evidence for sex-specific POLS composition: there was a negative covariance structure between growth rate and baseline GCs-but only in females, and a positive covariance structure between growth rate and baseline GCs-but only in females, and a positive covariance structure between growth rate and hemagglutination-but only in males. This observation indicates that these trait associations differ dramatically in advancing fitness for each sex, and supports the idea that sex-specific POLS composition could evolve in species in which the reproductive roles largely differ between the sexes.

关 键 词：Bufo gargarizans constraint GLUCOCORTICOIDS immunity metabolism phenotypic integration physiological pace-of-life syndrome 

分 类 号：Q958[生物学—动物学]