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

Autor: Magioli M; Instituto Pró-Carnívoros, Atibaia, São Paulo, Brazil.; Centro Nacional de Pesquisa e Conservação de Mamíferos Carnívoros (CENAP), Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio), Atibaia, São Paulo, Brazil., Attias N; Instituto de Conservação de Animais Silvestres (ICAS), Campo Grande, Mato Grosso do Sul, Brazil., Massocato G; Instituto de Conservação de Animais Silvestres (ICAS), Campo Grande, Mato Grosso do Sul, Brazil.; Instituto de Pesquisas Ecológicas, Organização Não Governamental, Nazaré Paulista, São Paulo, Brazil.; Houston Zoo, Houston, Texas, USA., Kluyber D; Instituto de Pesquisas Ecológicas, Organização Não Governamental, Nazaré Paulista, São Paulo, Brazil.; Naples Zoo at Caribbean Gardens, Naples, Florida, USA., Moreira MZ; Laboratório de Ecologia Isotópica, Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, São Paulo, Brazil., Ferraz KMPMB; Centro Nacional de Pesquisa e Conservação de Mamíferos Carnívoros (CENAP), Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio), Atibaia, São Paulo, Brazil.; 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., Chiarello AG; Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil., Desbiez ALJ; Instituto de Conservação de Animais Silvestres (ICAS), Campo Grande, Mato Grosso do Sul, Brazil.; Instituto de Pesquisas Ecológicas, Organização Não Governamental, Nazaré Paulista, São Paulo, Brazil.; RZSS-Royal Zoological Society of Scotland (RZSS), Murrayfield, Edinburgh, UK.
Jazyk: angličtina
Zdroj: Integrative zoology [Integr Zool] 2023 Jan; Vol. 18 (1), pp. 129-142. Date of Electronic Publication: 2022 Apr 04.
DOI: 10.1111/1749-4877.12644
Abstrakt: Understanding of resource requirements of vulnerable species is key for conservation planning. Here, we used stable carbon (δ 13 C) and nitrogen isotopes (δ 15 N) 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 Pantanal 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 (C 3 /C 4 resources, forests/open areas), but a quarter of individuals had strictly C 4 diets (open areas). Males are more prone to forage on C 4 resources, presenting an isotopic niche 2.6-times larger than that of females. Subadults presented diets more associated with habitats with high arboreal cover (C 3 resources, forests), while adults foraged more in open areas (C 4 resources). This result is mirrored by the positive relationship between δ 13 C values and body mass, suggesting that larger giant armadillos tend to feed more in open areas. We observed that δ 13 C values decreased as individuals increased the use of habitats with high arboreal cover. We stress the importance of conserving 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.
(© 2022 International Society of Zoological Sciences, Institute of Zoology/Chinese Academy of Sciences and John Wiley & Sons Australia, Ltd.)
Databáze: MEDLINE
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