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Therya

On-line version ISSN 2007-3364

Abstract

BRICENO-MENDEZ, Marcos et al. Richness and trophic guilds of carnivorous mammals in ejido Nuevo Becal, Calakmul, Campeche, Mexico. Therya [online]. 2017, vol.8, n.2, pp.145-150. ISSN 2007-3364.  http://dx.doi.org/10.12933/therya-17-472.

The prevalent and increasing situations such as the expansion of areas for agricultural use, livestock raising and hunting represent the most complex issues for the conservation of wild species. Mammals of the Order Carnivora are key species in ecosystems because they respond differently to changes in habitat. This study explored the species richness and composition of trophic guilds of the assemblage of the Order Carnivora in an area adjacent to Calakmul Biosphere Reserve, Mexico. From February 2014 to February 2015, 10 stations with camera traps were set within the sub-evergreen tropical forest near water bodies, roads and trails. The structure of the carnivorous assemblage was evaluated through the species richness and trophic guild of species. The recording efficiency of traps was evaluated through the latency to first detection (LTD). A total of 76 photographic records were obtained for eight species of the Order Carnivora, as well as direct observations of three additional species, so the assemblage recorded was composed of 11 species. Four trophic guilds were identified: carnivores (5 species), omnivores (4), insectivores (1), and frugivores (1). The Order consists of two species of large predators (Panthera onca and Puma concolor) and three generalist species (Urocyon cinereoargenteus, Puma yagouaroundi, and Procyon lotor). P. concolor and Leopardus wiedii displayed a low LTD (<140 days-trap). The eleven species recorded represent 26 % of the species of this Order countrywise, and 64 % for the state of Campeche. According to Mexican laws, 55 % of Carnivore species are in a threatened category. The diversity of guilds was similar to other assemblages, particularly for the carnivorous and omnivorous guilds. The diversity observed in the Nuevo Becal region confirms its importance for the conservation of the Order Carnivora, and the relevance of the evaluation of wild population in areas adjacent to large reserves such as Calakmul.

Keywords : Calakmul; camera traps; carnivore; communal areas; conservation.

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