We describe the nest of Scolomys melanops, (Rodentia: Cricetidae) found in low hill habitats in northeastern Peru. We identified three structures in the nest: a) an orifice of access and exit; b) a tunnel and c) roosting area. In the last structure, we found fruit and fiber remains of peduncle and stems of Lepidocaryum tenue (Arecales: Arecaceae) “Irapay”. Based on the vegetal remains found in the nest, we suggest the existence of a predation relationship between the rodent Scolomys melanops and the palm Lepidocaryum tenue.

Se describe el nido de Scolomys melanops (Rodentia: Cricetidae), encontrado en el Nororiente de Perú en un hábitat de Colinas bajas. Se identificó tres estructuras en el nido: a) Orificio de acceso y salida; b) Túnel y c) Dormidero, en este último se encontraron restos de frutos, fibras del pedúnculo y tallos de Lepidocaryum tenue (Arecales: Arecaceae) “Irapay”. Se sugiere en base al material vegetal encontrado en el nido, la existencia de una relación de depredación entre el roedor Scolomys melanops y la palmera Lepidocaryum tenue.

We report a new case of melanism in jaguars, Panthera onca, using camera traps in the Parque Nacional Ichigkat Muja - Cordillera del Cóndor, Amazonas - Peru. This report increases our knowledge related to polymorphic variations found in jaguars.

We report a new case of melanism in jaguars, Panthera onca, using camera traps in the Parque Nacional Ichigkat Muja - Cordillera del Cóndor, Amazonas - Peru. This report increases our knowledge related to polymorphic variations found in jaguars.

This report contains information about the diversity of mammals and preferences for habitat types in the upper Itaya river basin. For this purpose, censuses by transect were conducted and supplemented out censuses observations and with hunters interviews information. As a result of the study 48 species were recorded. Greater diversity was recorded in forest of heavily dissected low hill (Bcbfd). On the other hand, 20 species were shared among the three habitat types, while the highest similarity occurred between the forest of heavily dissected low hill (Bcbfd) and the forest of moderately dissected low hill (Bcbmd). Finally, the presence of indicator species as the primary community as Tapirus terrestris, Priodontes maximus, Lagothrix poeppigii and Tayassu pecari, indicate that the conservation status of wildlife in general is intermediate to high level.

This report contains information about the diversity of mammals and preferences for habitat types in the upper Itaya river basin. For this purpose, censuses by transect were conducted and supplemented out censuses observations and with hunters interviews information. As a result of the study 48 species were recorded. Greater diversity was recorded in forest of heavily dissected low hill (Bcbfd). On the other hand, 20 species were shared among the three habitat types, while the highest similarity occurred between the forest of heavily dissected low hill (Bcbfd) and the forest of moderately dissected low hill (Bcbmd). Finally, the presence of indicator species as the primary community as Tapirus terrestris, Priodontes maximus, Lagothrix poeppigii and Tayassu pecari, indicate that the conservation status of wildlife in general is intermediate to high level.