Length–mass allometries in amphibians  

作　　者：Luca SANTINI Ana BENÍTEZ-LÓPEZ Gentile Francesco FICETOLA Mark A.J.HUIJBREGTS 

机构地区：[1]Department of Environmental Science,Institute for Wetland and Water Research,Faculty of Science,Radboud University,Nijmegen,the Netherlands [2]Department of Bioscience,University of Milan,Milan,Italy [3]Alpine Ecology Laboratory,Grenoble Alpes University,Grenoble,France [4]PBL Netherlands Environmental Assessment Agency,The Hague,the Netherlands

出　　处：《Integrative Zoology》2018年第1期36-45,共10页整合动物学（英文版）

基　　金：LS and MAJH were supported by the ERC project(62002139 ERC–CoG SIZE 647224);GFF belongs to the Laboratoire d’Écologie Alpine,which is part of Labex OSUG@2020(ANR10 LABX56)。

摘　　要：Body mass is rarely recorded in amphibians,and other body measurements(e.g.snout to vent length,SVL)are generally collected instead.However,length measurements,when used as proxies of body mass in comparative analyses,are problematic if different taxa and morphotypes are included.We developed allometric relationships to derive body mass from SVL measurements.We fitted phylogenetic generalized least square models for frogs(Anura)and salamanders(Caudata)and for several families separately.We tested whether allometric relationships differed between species with different habitat preferences and between morphs in salamanders.Models were fitted with SVL-mass measurements for 88 frog and 42 salamander species.We assessed the predictive performance of the models by cross-validation.Overall,the models showed high explained variance and low forecasting errors.Models differed among semi-aquatic,terrestrial and arboreal frogs,and between paedomorphic and non-paedomorphic salamanders.Body mass estimates derived from our models allow for comparability of studies on multiple taxa and can be used for testing theories built upon evolutionary and ecological processes which are directly related to body mass.

关 键 词：ANURA body size body weight CAUDATA SVL 

分 类 号：Q95[生物学—动物学]