Evolution of metabolic scaling among the tetrapod:effect of phylogeny,the geologic time of class formation,and uniformity of species within a class  

作　　者：Valery M.GAVRILOV Tatiana B.GOLUBEVA Andrey V.BUSHUEV 

机构地区：[1]Department of Vertebrate Zoology,M.V.Lomonosov Moscow State University,Moscow,Russia [2]Zvenigorod Biological Station,M.V.Lomonosov Moscow State University,Moscow,Russia

出　　处：《Integrative Zoology》2022年第5期904-917,共14页整合动物学（英文版）

基　　金：supported by the RSF-FWO grant#20-44-01005.

摘　　要：The metabolic scaling in the animal has been discussed for over 90 years,but no consensus has been reached.Our analysis of 2126 species of vertebrates reveals a significant allometric exponent heterogeneity.We show that classes of terrestrial vertebrates exhibit the evolution of metabolic scaling.Both the allometric coefficient“a”and the allometric exponent“b”change naturally,but differently depending on the geological time of group forma-tion.The allometric coefficient“a”shows the measure of the evolutionary development of systems that forms resting metabolism in animals.Endothermic classes,such as birds and mammals,have a metabolic rate that is in an order of magnitude higher than that in ectothermic classes,including amphibians and reptiles.In the terrestrial vertebrate phylogeny,wefind that the metabolic scaling is characterized by 3 main allometric exponent values:b=3/4(mammals),b>3/4(ectotherms,such as amphibians and reptiles),and b<3/4(birds).The hetero-geneity of the allometric exponent is a natural phenomenon associated with the general evolution of vertebrates.The scaling factor decreases depending on both the external design and the size(birds vs mammals)of the an-imal.The metabolic rate and uniformity of species within a class increase as the geological start date of for-mation of the class approaches the present time.The higher the mass-specific standard metabolic rate in the class,the slower metabolic rate grows with increasing body size in this class.Our results lay the groundwork for further exploration of the evolutionary and ecological aspects of the development of metabolic scaling in animals.

关 键 词：geological time metabolic rate SCALING 

分 类 号：Q95[生物学—动物学]