PREMIERES MENTIONS SUR L’ARTHROPODOFAUNE AUX ABORDS DU LAC EDHAÏA (PARC NATIONAL DE CHREA-ALGERIE)

Abstract

This study, which was carried out for the first time in the heights of Chréa National Park, specifically around Lake Edhaiä (1230 m) between the period of March and June 2016, which consists of knowing the taxonomic component of arthropod communities, their richness and their relative abundance, through the use of three trapping techniques (yellow traps, barber pots, filleting net). The systematic inventory allowed us to identify 111 species of invertebrates divided into 4 classes, 14 orders and 82 families whose insects is best represented (105 species). Species richness varies according to the type of traps, the highest of which is noted for yellow traps (60 species). Of the insects harvested in Barber pots, Coleoptera represents the highest presence (89.07%). Regarding yellow pots, Diptera represent the majority of harvested species (56.47%). In the order of Diptera we can see the strong presence of Chironomidae (28.09%), which is useful for providing information on water quality and pollution indicator. The diversity indices (4.61 bits) and equidistribution (0.78) confirm that the study site is very rich, diversified and populated in species, and that the species are in equilibrium. Lastly, compared to monthly variations, the populations of arthropods recorded are different according to the factorial analysis of the correspondences.