Ping LI,Song TAN,Zhongyi YAO,et al.Sex But Not Altitude, Modulates Phenotypic Covariations Between Growth and Physiological Traits in Adult Asiatic Toads[J].Asian Herpetological Research(AHR),2022,13(1):34-42.[doi:10.16373/j.cnki.ahr.200127]
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Sex But Not Altitude, Modulates Phenotypic Covariations Between Growth and Physiological Traits in Adult Asiatic Toads
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

2022 VoI.13 No.1
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Sex But Not Altitude, Modulates Phenotypic Covariations Between Growth and Physiological Traits in Adult Asiatic Toads
Ping LI1 2 Song TAN1 2 3 Zhongyi YAO1 2 3 Gaohui LIU4 Jinzhong FU1 5 and Jingfeng CHEN1 2*
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
Bufo gargarizans constraint glucocorticoids immunity metabolism phenotypic integration physiological pace-of-life syndrome
The pace-of-life syndrome (POLS) hypothesis predicts that most variation in life history, physiology, and behavior among individuals, populations, and species falls along a continuum from slow to fast pace of life. While there is evidence for climatic gradient-mediated 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, baseline- and 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 within-population 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.


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Last Update: 2022-03-25