Patrón de actividad de Chironectes minimus (Didelphimorphia: Didelphidae) en ecosistemas periurbanos (Valle de Aburrá-Colombia), con anotaciones sobre su distribución altitudinal

The water opossum, Chironectes minimus, is perhaps one of the most cryptic marsupials in the Neotropics. Even though it has specific presence records throughout its distribution, its reports are scarce in ecosystems surrounding peri-urban areas. In this contribution, we report a new locality for the species to the southeast of the Aburra Valley, Antioquia, Colombia. From the analysis of the activity patterns, it was identified that the species shows a nocturnal activity trend, mainly between 19h00 and 00h00. Regarding to the review and analysis of its altitudinal distribution, even though there are records at different altitudinal ranges, records above 2.000 masl are scarce. Here we report a record at 2.660 masl and corroborate one at 2.562 masl in the study area. Likewise, from the review, we highlight the highest altitude record at 2.800 masl, which would expand its current range.