Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/14722
Título: High Proportion of Male Faeces in Jaguar Populations
Autor: Palomares, F.
Roques, Séverine
Chávez, Cuauhtémoc
Silveira, Leandro
Keller, Claudia
Sollmann, Rahel
Prado, Denise Mello do
Torres, Patricia Carignano
Adrados, Begoña
Godoy, Jose A.
Jácomo, Anah Tereza de Almeida
Tôrres, N. M.
Furtado, Mariana Malzoni
López-Bao, José Vicente
Palavras-chave: Behavior, Animals
Controlled Study
Feces
Feces Analysis
Felidae
Female
Field Study
Genetic Analysis
Geographic Distribution
Interspecific Competition
Leopardus Paradalis
Leopardus Wiedi
Male
Mexico
Non Invasive Measurement
Nonhuman
Panthera
Panthera Onca
Population Dynamics
Puma
Puma Concolor
Sex Ratio
Species Identification
Animalss
Defecation
Feces
Felidae
Female
Male
Mexico
Panthera
Population
Population Density
Puma
Sex Ratio
Species Specificity
Felidae
Leopardus
Panthera Onca
Puma Concolor
Data do documento: 2012
Revista: PLoS ONE
Encontra-se em: Volume 7, Número 12
Abstract: Faeces provide relevant biological information which includes, with the application of genetic techniques, the sex and identity of individuals that defecated, thus providing potentially useful data on the behaviour and ecology of individuals, as well as the dynamics and structure of populations. This paper presents estimates of the sex ratio of different felid species (jaguar, Panthera onca; puma, Puma concolor; and ocelot/margay, Leopardus pardalis/Leopardus wiedi) as observed in field collected faeces, and proposes several hypotheses that could explain the strikingly high proportion of faeces from male jaguars. The proportion of male and female faeces was estimated using a non-invasive faecal sampling method in 14 study areas in Mexico and Brazil. Faecal samples were genetically analysed to identify the species, the sex and the individual (the latter only for samples identified as belonging to jaguars). Considering the three species, 72.6% of faeces (n = 493) were from males; however, there were significant differences among them, with the proportion from males being higher for jaguars than for pumas and ocelots/margays. A male-bias was consistently observed in all study areas for jaguar faeces, but not for the other species. For jaguars the trend was the same when considering the number of individuals identified (n = 68), with an average of 4.2±0.56 faeces per male and 2.0±0.36 per female. The observed faecal marking patterns might be related to the behaviour of female jaguars directed toward protecting litters from males, and in both male and female pumas, to prevent interspecific aggressions from male jaguars. The hypothesis that there are effectively more males than females in jaguar populations cannot be discarded, which could be due to the fact that females are territorial and males are not, or a tendency for males to disperse into suboptimal areas for the species. © 2012 Palomares et al.
DOI: 10.1371/journal.pone.0052923
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