On the Feeding Ecology of Psammomys Obesus (rodentia, Gerbillidae) in the Wadi Saoura, Algeria

نویسندگان

  • M. DALY
  • S. DALY
چکیده

Psammomys mange clcctivement les tiges et les feuilles salees et succulentes de plusieurs especes de plantes de la famille des Chenopodiacees. Des donnees sur les preferences et les besoins alimentaires de 1'animal sont presentees et notamment sur les quantites qu'il peut ingerer lorsqu'il mange exclusivement soit Suaeda mollis, soit Traganum nudatum, sdit Salsola foetida. Au laboratoire comme dans la nature les Psammomys pref£rent les plantes qu'il s peuvent exploiter avec le plus d'efficacito. L'ordre de proference constate au laboratoire ne depend pas de Fespece vitale laquelle etait infeode Panimal au moment de sa capture ; cependant celle-ci determine 1'adresse avec laquelle le Psammomys peut manger, adresse que Γόη mesure par le taux relatif d'ingestion. Les auteurs font etat de leurs observations sur le terrain, de l'etude des effets de la privation de nourriture a court terme, du developpement du comportement alimentaire, du role des concurrents, et de cbmparaisons avec Ideologie et le comportement d'autres rongeurs.

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تاریخ انتشار 2009