Home range and minimal population densities of Southern tiger cat (Leopardus guttulus), margay (Lepardus wiedii) and jaguarundi (Puma yagouaroundi) , e 0,04 gatos-mourisco por km 2 . As estimativas de densidade são oriundas de áreas sem a presença de jaguatiricas (Leopardus pardalis) ou outros predadores de maior porte, todos localmente extintos, com possíveis efeitos de um tipo específico de relaxamento de mesopredadores, conhecido como "Efeito Pardalis" que podem permitir o aumento do tamanho das populações de gatos menores.
The frequency of remating in Drosophila melanogaster is affected by both genetic and ecological factors. We studied the remating behaviour in one European (Italy) and one African (Uganda) Drosophila simulans population using six highly polymorphic microsatellite markers. Despite that the populations were genetically distinct ( F ST = 0.18) and originated from very dissimilar ecological settings with different population densities, we inferred a very similar mating pattern. The remating parameter α α α α was similar in both populations ( Å = 1.3 -1.4). No more than two distinct paternal genotypes per family were detected in each population.
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