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Diversity and distribution of pachyrynchini (Coleoptera: Curculionidae: Entiminae) in Mt. Apo Natural Park, Philippines – JBES

Analyn Anzano Cabras, Gerry Nique, Alma Mohagan

Department of Math and Science, University of Mindanao, Davao City, Philippines

University of Mindanao, Bansalan Campus, Davao del Sur, Philippines

Department of Biology, Central Mindanao University, Musuan, Maramag, Bukidnon, Philippines

Key words: Pachyrynchini, Curculionidae, Mt. Apo Natural Park, endemic beetle, Baseline data.


The tribe Pachyrynchini (Coleoptera:Curculionidae:Entiminae) with a Philippine centered distribution is poorly studied with mountains like Mt. Apo Natural Park less explored. A combination of belt transect, visual encounter and photo documentation was conducted from May to December, 2015 to document the Pachyrynchini fauna in Mandarangan trail, Mt. Apo Natural Park. Twenty one (21) species belonging to two genera Pachyrynchus and Metapocyrtus were found. Pachyrynchus was represented by four species and 1 subspecies while 17 species represents Metapocyrtus. Species diversity was low with (H’=1.065) as the highest record in the montane forest. Pachyrynchus species were not found in lower montane (800-1000masl) while Metapocyrtus species were more dispersed and observed from lower montane to mossy forest( 800-2400 masl). Fifty percent (50%) of the Pachyrynchini species were noted to have altitudinal preference to either montane (1000-1500masl) or mossy forest (1600-2400masl). Land use modification (e.g.farming) which has eradicated food and larval host plants of Pachyrynchini species is believed to be one of the reasons of low diversity in the lower montane. The result of the survey represents the baseline data of Pachyrynchini fauna in Mt. Apo Natural Park, Philippines. Conservation efforts especially for the rare and endemic species should be conducted.

Get the original articles in Source: Archive for | JBES |- February, 2016

Journal Name: Journal of Biodiversity and Environmental Sciences (JBES)

Published By: International Network for Natural Sciences

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