Exposure to androgens during prenatal development shapes both physiological and behavioral developmental trajectories. Notably, in rhesus macaques, prenatal androgen exposure has been shown to increase rough-and-tumble play, a prominent behavioral feature in males during the juvenile period in primates. While macaques are an Old World, polygamous species with marked sexually dimorphic behavior,...

Capturing small carnivores is often necessary for obtaining key ecological data. We compared the efficiency of box and leg-hold traps, using live and dead bait, to capture six carnivore species (Herpailurus yagouaroundi (E. Geoffroyi, 1803), Leopardus tigrinus (Schreber, 1775), Nasua nasua (Linnaeus, 1766), Cerdocyon thous (Linnaeus, 1766), Eira barbara (Linnaeus, 1758), and Galictis cuja (Moli...

El presente trabajo pretende establecer la prevalencia de los helmintos intestinales una poblaciónprotegida Ateles belzebuth chamek. Para ello, se colectaron muestras fecales 34 individuos pertenecientes a tres grupos sociales población en Estación Biológica Cocha Cashu del Parque Nacional Manu, Perú. Las fueron fijadas formol (10 %, 60 ºC) y analizadas mediante el método directo Ritchie para c...

Naked mole-rats, Heterocephalus glaber, are eusocial, subterranean rodents that inhabit arid regions of northeastern Africa. They feed on bulbs and tubers that are patchily distributed. Nests are often located far from the nearest food source through a labyrinth of tunnels. Two captive colonies were studied to determine whether successful foragers recruit colony mates and, if so, how. Individua...

Tropical forests of Colombia have one the highest deforestation rates in world. The humid forest Magdalena valley region is ecosystems with risk landscape transformation, despite being home to many endemic and threatened species. aim this study was evaluate role a Peasant Reserve Zone conservation tropical endangered species region. To reach aim, we performed multi-temporal analysis dynamics Zo...