Variations in the requirements of environment parameters by solitary Desert Locust in Algerian Sahara


  • Djillali Mahdjoubi Medea University
  • Fahima Outtar Medea University
  • Atika Guendouz Benrima Ghardaia university
  • Abderrezzak Kirouani Medea university
  • Daniel Petit University of Limoges, 123 avenue A. Thomas, 8706 Limoges France



Schistocerca gregaria, vegetation, Sahara, density


To test the influence of local conditions on the density and frequency of solitary Desert Locust (Schistocerca gregaria), we performed 466 samplings in different areas of Algerian Sahara during surveys conducted between 2007 and 2013. For each sampling, a quantitative analysis of flora, vegetation, soil humidity and Desert Locust was undertaken. It turns out that the relationships between environmental descriptors and adult density at the local scale vary according to populations. The mountain of south east Algeria is considered as refuges for autumn populations as they presence is conditioned neither by soil humidity nor by vegetation. In Central Sahara near Adrar, the spring populations are very sensitive to humidity and vegetation composition, and also result from local reproduction and immigrations from south east mountain areas, rather than south Saharan areas. In southern Algeria, the populations found in summer result from an admixture of local and exogenous populations coming from central Sahara and Sahel countries.


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How to Cite

Mahdjoubi, D., Outtar, F., Guendouz Benrima , A., Kirouani , A. ., & Petit, D. (2023). Variations in the requirements of environment parameters by solitary Desert Locust in Algerian Sahara. Genetics & Biodiversity Journal, 7(2), 177–185.



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