Scarab beetles (Coleoptera: Melolonthidae) in Agroecosystems of Cauca Valley, Colombia I. Assemblage, Biological Notes and, Taxonomic Keys
DOI:
https://doi.org/10.32870/dugesiana.v20i1.4075Keywords:
caña de azúcar, sistema silvopastoril, bosque, escarabajos fitófagos, ensamblaje, diversidad, abundancia, Valle del Cauca, Colombia. AAbstract
Melolonthidae beetles (Coleoptera: Scarabaeoidea) occupy multiple niches in Tropical Andean Ecosystems. This group include members withdifferent feeding habits (saprophagy, phytophagy and zoophagy), which gives them an advantage in the agroindustrial environment of Valle delCauca. For this reason, we conducted a study in order to determine the composition and bioecological aspects of beetles in the monocultured alluvialsystem of the Cauca River (tropical dry forest Bs-T, 780-1100 mm / year, 960-975 m, 24°C), the biological study included sampling and laboratoryobservations, supplemented by collections and literature review, the ecological study (ecological management cane plots (CME), conventionalcane (CC), silvopastoral pasture (PSP) and forest, was based on quadrants ( 1m2 and 30 cm depth) during dry season and wet transition. Wepresent bioecological data for the 42 species considered inhabitants of the monocultured system, and some others considered extinct, these were:Astaena aff. valida, Phyllophaga sericata, P. thoracica, P. impressipyga, Macrodactylus sp., Isonychus sp., Ceraspis sp., Plectris aff. fassli, P. aff.pavida, Pelidnota prasina, Macraspis chrysis, M. nazareti, Paranomala cincta, P. undulata, P. incostans, Leucothyreus femoratus, Cyclocephalalunulata, C. amazona, C. stictica, C. pardolocarnoi, C. melanocephala, Aspidolea fuliginea, Aspidolea singularis, Dyscinetus dubius, Stenocratesbicarinatus, Lycomedes hirtipes, Ligyrus bituberculatus, L. gyas, Coelosis biloba, Podischnus agenor, Strategus aloeus, Parapucaya amazónica,Phileurus valgus, Phileurus didymus, Homophilerus tricuspis, Gymnetis holosericea, G. aff hebraica difficilis, G. pantherina, G. stellata, Hoplopygaliturata, Desicasta reichei y Marmarina maculosa. In the ecological study 323 specimens and 8 species were collected, with greater diversity (4)and abundance (18 +) in CME and Forest, the lower results were observed at PSP, this assembly is integrated by species preadapted to simplifiedenvironments, thus losing valuable diversity and environmental services to agroecosystems; therefore it is recommended to refocus the implementedtechnologic model towards sustainability.Downloads
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2015-09-30
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