Daily rhythmicity of behavior of nine species of South American feral felids in captivity

Abstract

The authors analyzed the daily activity rhythms of the domestic cat and of eight of the ten feral felid species that are indigenous to South America. All species showed daily rhythmicity of activity in captivity under a natural light-dark cycle. The robustness of the rhythmicity varied from species to species, but the grand mean of 34% was within the range of robustness previously described for mammalian species ranging in size from mice to cattle. There was not a sharp division between diurnal and nocturnal felids. Instead, what was found was a gradient of diurnality going from the predominantly nocturnal margay (72% of activity counts during the night) to the predominantly diurnal jaguarundi (87% of activity counts during the day) with the remaining species lying in between these two extremes. The ecological implications of temporal niche variations are discussed.

Influencia del enriquecimiento ambiental en las conductas de Felis catus, Leopardus geoffrogy y Puma yaguarundi

“…Especímenes de estudio: Se utilizaron cuatro Felis catus (especie doméstica nocturna), cuatro Leopardus geoffrogy (especie silvestre nocturna) y un Puma yagouaroundi (especie silvestre diurna) (6). Todos los animales eran machos, adultos jóvenes, con un peso promedio en los gatos domésticos de 4 kg y de 5 kg en las especies silvestres, con buen estado de salud y con al menos 1 mes de cautiverio al inicio del estudio.…”