Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
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Date of this Version
2016
Document Type
Article
Citation
Erforschung biologischer Ressourcen der Mongolei (2016) band 13: 301-311.
Results of the Mongolian-German Biological Expeditions since 1962, No. 337.
Abstract
New materials of 10 Eagle owl Bubo bubo localities from Mongolia were analyzed. The feeding ecology of Long-eared owl Asio otus was studied by the investigation of pellets from 4 roosting or nesting places in S-Mongolia. All together in the prey of Bubo bubo were analyzed 1098 vertebrates (1017 mammals, 39 birds, 41 reptiles, 1 fish), involving about 22 mammal species. The pellets were dominantly those of Lagomorpha with 23.3% in SW-Mongolia, Dipodidae in W-, SW- and S-Mongolia (37.3%, 23.4%, 30.2%), Cricetidae in SW- and S-Mongolia (13.6%, 17.6%), Gerbillidae in W- and S-Mongolia (19%, 32.1%) and Arvicolidae in W- and SW-Mongolia (23.8%, 23.8%). The percentage of birds was registered between 3.2 and 4.5%. Rests of evertebrates (Arachnida, Solifugae, Scorpiones, Coleoptera, Orthoptera) were noticed in rare cases. For Asio otus 747 vertebrates (726 mammals, 12 birds, 9 reptiles) as prey were determined. About 13 mammal species were analyzed. In the prey of the Longeard Owl are dominant the small Cricetidae species (Cricetulus and Phodopus with 50.5%) as well as Gerbillidae (Meriones sp. 29%) and the small Dipodidae (Salpingotus and Cardiocranius) with 12.3%.
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Comments
Copyright 2016, Martin-Luther-Universität Halle Wittenberg, Halle (Saale). Used by permission.