On the Feeding Ecology of Psammomys Obesus (rodentia, Gerbillidae) in the Wadi Saoura, Algeria
نویسندگان
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.
منابع مشابه
Seasonal changes in plasma concentrations of gonadotropins and in the responsiveness of the pituitary and testis to GnRH in a desert rodent, the sand rat (Psammomys obesus).
The male sand rat (Psammomys obesus), captured alive in the Sahara desert in the area of Béni-Abbès (Algeria), exhibited seasonal changes in plasma concentrations of LH, characterized by an increase in early summer. Administration of a standard dose of GnRH (200 ng/100 g body weight) failed to elicit significant season-dependent changes in LH release, whereas the increase in plasma testosterone...
متن کاملTemporal Dynamics and Impact of Climate Factors on the Incidence of Zoonotic Cutaneous Leishmaniasis in Central Tunisia
BACKGROUND Old world Zoonotic Cutaneous Leishmaniasis (ZCL) is a vector-borne human disease caused by Leishmania major, a unicellular eukaryotic parasite transmitted by pool blood-feeding sand flies mainly to wild rodents, such as Psammomys obesus. The human beings who share the rodent and sand fly habitats can be subverted as both sand fly blood resource. ZCL is endemic in the Middle East, Cen...
متن کاملThe desert gerbil Psammomys obesus as a model for metformin-sensitive nutritional type 2 diabetes to protect hepatocellular metabolic damage: Impact of mitochondrial redox state
INTRODUCTION While metformin (MET) is the most widely prescribed antidiabetic drug worldwide, its beneficial effects in Psammomys obesus (P. obesus), a rodent model that mimics most of the metabolic features of human diabetes, have not been explored thoroughly. Here, we sought to investigate whether MET might improve insulin sensitivity, glucose homeostasis, lipid profile as well as cellular re...
متن کاملNon Insulin Dependent Diabetes in Sand Rat (Psammomys obesus) and Production of Collagen in Cultured Aortic Smooth Muscle Cells. Influence of Insulin
In this report, we have shown that the standard laboratory diet administered to Psammomys obesus (sand rat) from Beni Abbes in Algeria, induced a non-insulin dependent diabetes, characterised by increase of body weight (p<0.001) as well as hyperinsulinemia, hyperglycemia and hypercholesterolemia. In cultured aortic smooth muscle cells (SMC) of sand rats, type I and type III collagen biosynthesi...
متن کاملCharacterization of Obesity Phenotypes in Psammomys Obesus (Israeli Sand Rats)
Psammomys obesus (the Israeli sand rat) has been well studied as an animal model of Type 2 diabetes. However, obesity phenotypes in these animals have not been fully characterized. We analyzed phenotypic data including body weight, percentage body fat, blood glucose and plasma insulin concentration for over 600 animals from the Psammomys obesus colony at Deakin University to investigate the rel...
متن کامل