Data/hora: 16/06/2024 02:29:48

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 01/02/2016
Data da última atualização: | 15/03/2021
Autoria: | ANTUNES, P.; SANTOS, L. G. R. O.; SANTOS, T. M. R. dos; MENEZES, F. S. de; TOMAS, W. M.; FORESTER, J. D.; FERNANDEZ, F. A. S.
Afiliação: | PÂMELA ANTUNES, Universidade Federal do Rio de Janeiro; LUIZ GUSTAVO RODRIGUES OLIVEIRA SANTOS, Universidade Federal de Mato Grosso do Sul; THIAGO MATEUS ROCHA DOS SANTOS, Universidade Federal de Mato Grosso do Sul; FERNANDO SARAIVA DE MENEZES, Universidade Federal de Mato Grosso do Sul; WALFRIDO MORAES TOMAS, CPAP; JAMES D. FORESTER, University of Minnesota; FERNANDO ANTONIO SANTOS FERNANDEZ, Universidade Federal do Rio de Janeiro.
Título: | Mating system of Thrichomys fosteri in the Brazilian Pantanal: spatial patterns indicate promiscuity.
Ano de publicação: | 2020
Fonte/Imprenta: | Mammalian Biology, v. 100, p. 365-375, 2020.
DOI: | https://doi.org/10.1007/s42991-020-00040-y
Idioma: | Inglês
Conteúdo: | Animal mating systems provide key insights into the relationship between evolutionary processes and ecological factors such as the spatio-temporal fuctuation of resource abundance. Characteristics of mating systems can be inferred from the spatial distribution of conspecifcs and the arrangement of reproductive pairs. Here we used home-range size and overlap for Thrichomys fosteri in the Brazilian Pantanal to infer the mating system on this echimyid rodent. Our aims were to verify the existence of sexual dimorphism, to test whether home-range size varied with the sex and body weight of the individuals, to evaluate the degree of home-range overlap, to estimate mean population density, and to infer individuals? mating system. Twenty one individuals (15 males and six females) were radio tracked from 14 to 349 days, with the number of locations by individuals ranging from 19 to 193 locations. There was a male-biased sexual dimorphism in body weight where males were 1.36 times heavier than females. Males? home-range size increased with their body weight, while for females there was no relationship. There was extensive home-range overlap between both sexes, and no evidence of territoriality. Mean population density ranged from 0.9 to 3.03 individuals/ha. Our results indicate that multiple mates were available for both sexes, characterizing a promiscuous mating system.
Thesagro: | Roedor.
Thesaurus Nal: | Rodentia; Rodents; Sexual dimorphism.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (59497-1) - UPC - AP - DD -  -  -  - DIS