Journal Algérien des Régions Arides
Volume 15, Numéro 1, Pages 130-138
2023-02-06

Coleoptera Species Associated With Durum Wheat In Ziban Region (northern Sahara Of Algeria): Diversity, Abundance And Sharing Of Trophic Resources



Auteurs : Bakroune Nourelhouda . Rouahna Houria . Boultif Meriem . Sellami Mehdi .

Résumé

Our study highlights the ecology of coleopteran species associated with durum wheat in the Biskra region, where it was carried out on three sites considered to be the most important cereal poles in the region, Using a fall trap, we were able to collect a total of 1671 individuals of Coleoptera, belonging to 42 species, 38 genus and 12 families. The most representative families were the Coccinellidae and the Carabidae (7 species for each), the Cetoniidae (5 species), the Curculionidae, the Staphilinidae, the Scarabeidae and the Cantharidae are represented by 4 species for each. The most represented species were Coccinella septempunctata (424 specimens), Oulema melanopa (342 specimens), Hippodamia variegata (243 specimens) and Psilothrix viridicoerulea (238 specimens). Shannon's diversity index (H') values are 1.31 bits in Sidi Okba, 1.45 bits in El Houche and 1.29 in El Outaya. The values of the Evenness index (E) are less than 0.50 which shows that populations are in imbalance. The trophic status of the collected species showed that predators are the most dominant species with a relative abundance of 50%, followed by phytophagous by a relative abundance equal to 36%.

Mots clés

Coleoptera; ecology; diversity; durum wheat; Biskra; Algeria.

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