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Boletín Científico. Centro de Museos. Museo de Historia Natural

Print version ISSN 0123-3068

Abstract

MARTINEZ-H, Neis José et al. COLEOPTERA (VIII) COPROPHAGOUS COLEOPTERA (SCARABAEIDAE: SCARABAEINAE) IN LAS DELICIAS NATURAL RESERVE (DNR), SIERRA NEVADA DE SANTA MARTA, (SNSM) COLOMBIA. Bol. Cient. Mus. Hist. Nat. Univ. Caldas [online]. 2010, vol.14, n.2, pp.187-200. ISSN 0123-3068.

The richness and abundance of coprophagous beetles (Scarabaeinae) in Las Delicias Natural Reserve (DNR), SNSM, Colombia was determined in this study. Two sampling locations with different intervention degrees were selected. This first is located at latitude between 400 and 500 m.a.s.l. and the second at 200 m. Four samplings were carried out between April and July, 2008. A transect with ten 40m separate pitfall traps baited with human excrement was installed in each location during 24 hours. 4,929 individuals were captured distributed in five tribes and 18 species, being Dichotomius belus the predominant one with 1,284 individuals (26% out of the total.) The greatest richness (16), diversity (N1 = 7,683 y N2 = 6,515) and Pielou equitability (J' = 0.8206) were present in June, and the greatest abundance (1,036) in the second location in July. The ANOSIM test showed significant differences between the sampling periods (R = 1; P = 0.036.) The number of species observed correspond between 98% and 100% to the species expected by the ICE and Chao 2. The results of this study show that rainfall and the availability of resources are important factors to explain the changes in the richness and abundance of the Scarabaeinae fauna in the Bs-T in the DNR.

Keywords : abundance; dry forest; Dichotomius belus; richness; pitfall traps.

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