Diversidad comparada de Tenebriónidos (Coleoptera) en dos ambientes con diferentes usos del suelo

QUIROGA, G., L.M. DÍAZ-NIETO, A.F. MURÚA, G.E. FLORES & F.H. ABALLAY

revista del museo argentino de ciencias naturales

Museo Argentino de Ciencias Naturales

Lugar: Buenos Aires; Año: 2023 vol. 25 p. 275 - 286

1514-5158

Comparative diversity of Tenebrionids (Coleoptera) in two environments with different land uses. The advance of agriculture raises the need to measure the effect of human activities on natural environments. Tenebrionidae is considered a good biological indicator for this purpose. The central goal of this study is to compare the assemblages of darkling-beetles (Coleoptera: Tenebrionidae) from dunes located in a natural area and from a cultivated site, in order: 1) Increase our knowledge of the community of darkling-beetles of sand dunes from the Monte Desert; 2) Examine spatio-temporal changes in the abundance and diversity (alfa and beta) of these beetles between natural sand dunes and a cultivated area; 3) Annalise spatio-temporal changes in the assemblages found in these two areas based on their adaptation to aridity conditions. A site with commercial crops of Vitis vinifera and a site in dune system, considered a natural area with low human intervention were sampled using of pitfall traps. Different indices were applied to determine the alpha and beta diversity of both environments. Comparative analyses were carried out between the two environments for three groups of tenebrionid species classified according to their degree of adaptation to aridity: Most Highly Adapted, Highly Adapted and Less Adapted species. We collected 1792 tenebrionids, grouped into five subfamilies and 22 species, with 8 new records of Tenebrionidae for the central Monte of Argentina. The diversity was similar for commercial crops and the dune system, although species composition differed between sites. However, differences between environments were associated with the degree of adaptation to aridity of the different groups of species. Agricultural activity would affect the species with greater adaptation to the arid natural environment.