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Male-female interaction during breeding and non-breeding seasons in Akodon azarae (Rodentia, Muridae) Iheringia, Sér. Zool.
Suárez,Olga V.; Kravetz,Fernando O..
Dyad encounters between male and female adults of Akodon azarae (Fischer, 1829) were analyzed by means of observational techniques in a natural closure during the breeding and non-breeding seasons. The animals were held in observation during 21 days, with daily 15-minute recordings of interindividual separation distance, relative displacements, characteristics of the male-female interaction, copulation, and construction and exclusive or shared use of nests by each pair. The couples, which bred successfully, showed, on average, the longest separation distance between male and female allowed by the closure. During the first two weeks of gestation the females exhibited more displacements than their respective mates did. The male-pregnant female encounters...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Akodon; Breeding; Behavior; Muridae.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000200023
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New data on the natural history and morphometrics of Lutreolina crassicaudata (Didelphimorphia) from central-eastern Argentina Mastozool. neotrop.
Muschetto,Emiliano; Cueto,Gerardo R.; Suárez,Olga V..
We provide new data on the natural history and morphometrics of one of the least studied didelphid marsupial species, Lutreolina crassicaudata. Field work was conducted in central-eastern Argentina during two consecutive years. Juveniles and sub-adults were captured during summer and autumn. Reproduction showed seasonality with a continuous breeding period from spring to summer (September to February). The analysis of 17 scats belonging to 17 individuals showed mainly seeds and vegetal remains, as well as amphibians, birds and invertebrates. Sexual dimorphism in juveniles and sub-adults was registered for the first time, being males larger and heavier than females.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diet; Opossum; Reproduction; Seasonal fluctuation; Sexual dimorphism.
Ano: 2011 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832011000100006
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