Publications scientifiques

Permanent URI for this community

http://10.10.20.114:4000/handle/123456789/2

Browse

Browsing Publications scientifiques by Author "BENSAAD, H"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    DIET’S STUDY FOR SCHISTOCERCA GREGARIA (FORSKAL, 1775) (CYRTACANTHACRIDINAE, ACRIDIDAE) AT LEVEL OF BOTH STATIONS IN REGION OF TAMANRASSET (HOGGAR)
    (2014) LAZAR, M; BENSAAD, H; DOUMANDJI-MITICHE, Bahia; BENZEHRA, A
    Vegetation interest for desert locust Schistocerca Gregaria studied by analyse method of digestive continuous at level of the two stations (Oued Amdad and Oued Arak) situated in region of Tamanrasset (Hoggar) in Algerian South known as zones of reproduction of potentilla closer each other and are different by dominance of various vegetable species which are growing, showed in spite of presence of several vegetable species at level of both stations, diet of solitary locust populations harvested in both study stations is not very varied and only 4 vegetable species at Oued Amded and 6 ones at Oued Arak had been observed in ingestion of studied individuals. As well, at level of Oued Amded station, females have consumed 4 vegetable species and males have consumed only 2 among the 12 existing. In station of Oued Arak, females and males have consumed 5 vegetables species on the 10 existing. The most consumed vegetable specie as well as by females and by males in both stations is Schouwia thebaica.
  • No Thumbnail Available
    Item
    PHASAL STATE OF SCHISTOCERCA GREGARIA FORSKAL, 1775 (ORTHOPTERA, ACRIDIDAE) IN THE BREEDING BIOTOPES OF ALGERIAN SAHARA DURING 2009 AND 2010
    (journal, 2014) BENSAAD, H; DOUMANDJI-MITICHE, Bahia
    To better understand the trend of locust populations existing in southern Algeria during the calm periods (recession), a study on the phase status of locust populations of Schistocerca gregaria in its natural biotope, was carried out during the two years 2009 and 2010. To do this, morphometric measurements of 163 Locust individuals including 81 males and 82 females, from eight different biotopes, were performed. The mean values of morphometric ratios of Elytron on Femur (E / F) and Femur on Cephalic capsule (F / C) in the 8 study sites fluctuate in males from 2.02 to 2.13 for the E / F ratio and 3 65 to 3.95 F / C ratio. For females E / F varies between 2.09 to 2.15 and F / C varies between 3.83 to 4.03. The comparison of the results related to E / F ratios and F / C with those of Dirsh (1953) and the report on their morphometric abacus of Duranton and Lecoq (1990) showed that male and female populations that evolve in the biotopes of both southern and central parts of the Algerian Sahara, for the two years 2009/2010 are mostly the Solitarious-transient with a rare presence of purely solitary individuals and a total absence of gregarious individuals.