What a few hairs can tell us about the resource use of giant armadillos  

作　　者：Marcelo MAGIOLI Nina ATTIAS Gabriel MASSOCATO Danilo KLUYBER Marcelo Zacharias MOREIRA Katia Maria Paschoaletto Micchi de Barros FERRAZ Adriano Garcia CHIARELLO Arnaud L.J.DESBIEZ 

机构地区：[1]Instituto Pró-Carnívoros,Atibaia,São Paulo,Brazil [2]Centro Nacional de Pesquisa e Conservação de Mamíferos Carnívoros(CENAP),Instituto Chico Mendes de Conservação da Biodiversidade(ICMBio),Atibaia,São Paulo,Brazil [3]Instituto de Conservação de Animais Silvestres(ICAS),Campo Grande,Mato Grosso do Sul,Brazil [4]Instituto de Pesquisas Ecológicas,Organização Não Governamental,NazaréPaulista,São Paulo,Brazil [5]Houston Zoo,Houston,Texas,USA [6]Naples Zoo at Caribbean Gardens,Naples,Florida,USA [7]Laboratório de Ecologia Isotópica,Centro de Energia Nuclear na Agricultura,Universidade de São Paulo,Piracicaba,São Paulo,Brazil [8]Laboratório de Ecologia,Manejo e Conservação de Fauna Silvestre(LEMaC),Departamento de Ciências Florestais,Escola Superior de Agricultura“Luiz de Queiroz”(ESALQ),Universidade de São Paulo(USP),Piracicaba,São Paulo,Brazil [9]Departamento de Biologia,Faculdade de Filosofia,Ciências e Letras,Universidade de São Paulo(USP),Ribeirão Preto,São Paulo,Brazil [10]RZSS-Royal Zoological Society of Scotland(RZSS),Murrayfield,Edinburgh,UK

出　　处：《Integrative Zoology》2023年第1期129-142,共14页整合动物学（英文版）

基　　金：the National Council of Technological and Scientific Development(CNPq)for the research productivity fellowship grant(#308632/2018-4).

摘　　要：Understanding of resource requirements of vulnerable species is key for conservation planning.Here,we used sta-ble carbon(δ13C)and nitrogen isotopes(δ15N)of hair from giant armadillos(Priodontes maximus)to understand individual resource use.We collected hair from 19 giant armadillos analyzing 34 samples from the Brazilian Pan-tanal and compared the resource use between sexes and age classes.We also assessed the relationship of isotopic values with individuals’body mass and the habitat type used.We observed a wide variation in resource use by giant armadillos,showing that individuals consume prey that feeds on distinct resources and occupies different habitat types,indicating that there is individual variation in foraging behavior.Most giant armadillos presented a mixed diet(C3/C4 resources,forests/open areas),but a quarter of individuals had strictly C4 diets(open areas).Males are more prone to forage on C4 resources,presenting an isotopic niche 2.6-times larger than that of females.Subadults presented diets more associated with habitats with high arboreal cover(C3 resources,forests),while adults foraged more in open areas(C4 resources).This result is mirrored by the positive relationship betweenδ13C values and body mass,suggesting that larger giant armadillos tend to feed more in open areas.We observed thatδ13C values decreased as individuals increased the use of habitats with high arboreal cover.We stress the importance of con-serving the natural mosaic in the Pantanal landscape for the species persistence,given that giant armadillos require all habitat types to fulfill their dietary,spatial,and developmental needs.

关 键 词：DIET ontogenetic changes resource partitioning stable isotopes TELEMETRY 

分 类 号：O57[理学—粒子物理与原子核物理]