Importance de la Mérione de Shaw Meriones shawii au sein des composantes trophiques de la Chouette effraie Tyto alba en milieux steppiques de l’Algérie |
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Authors: | Makhlouf Sekour Karim Souttou Ahlem Guerzou Noureddine Benbouzid Omar Guezoul Labed Ababsa Christiane Denys Salaheddine Doumandji |
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Institution: | 1. Département d’agronomie saharienne, université d’Ouargla, Ouargla, Algérie;2. Département d’agropastoralisme, université de Djelfa, Djelfa, Algérie;3. Laboratoire d’ornithologie, Département de zoologie, École nationale des sciences agronomique, Alger, Algérie;4. UMR CNRS 7205 CNRS – Mammifères & Oiseaux, département Systématique et Évolution, Muséum national d’histoire naturelle, 75005 Paris, France |
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Abstract: | The study of the diet of the Barn Owl in two steppic regions (M'Sila and Djelfa) located in the Algerian highlands is based on the analysis of the pellets of rejections collected in six stations. The analysis of 706 pellets resulting from the various stations made it possible to count 1380 individuals, represented by seven classes, 12 orders, 32 families, and 76 species of preys. The mammals are consumed with variable abundance rates between 59.1 % and 90.0 % whose predominance is assigned to the rodents (relative abundance: AR > 58 %). The latter constitute the most advantageous preys in biomass (61.4 ≤ B % ≤ 99.2). The most consumed prey is Meriones shawii, with variable rates between 31.9 % and 76.6 %. Generally, Tyto alba presents a diversified diet in the majority of the stations (0.69 ≤ E ≤ 0.76), except the station of Ain El-Hadjel (E = 0.35), with a low diversity and dominance of M. shawii (AR = 76.6 %). |
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Keywords: | Tyo alba Ré gime alimentaire Pelote Meriones shawii Steppe Algé rie |
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