Dietary response of barn owls (Tyto alba) to large variations in Microtus arvalis and Arvicola terrestris prey populations
E-mail Addresses: nadine.bernard@univ-fcomte.fr International audience The diet of the Barn Owl (Tyto alba (Scopoli, 1769)) was studied over an 8-year period in the Jura mountains of France, during two population surges of its main rodent prey (common voles (Microtus arvalis (Pallas, 1778)) and Euro...
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ftsupagro:oai:HAL:hal-00451728v1 2024-06-16T07:41:27+00:00 Dietary response of barn owls (Tyto alba) to large variations in Microtus arvalis and Arvicola terrestris prey populations Bernard, Nadine Michelat, Dominique Raoul, Francis Quéré, Jean-Pierre Delattre, Pierre Giraudoux, Patrick Laboratoire Chrono-environnement (UMR 6249) (LCE) Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Centre de Biologie pour la Gestion des Populations (UMR CBGP) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD France-Sud )-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) 2010 https://hal.science/hal-00451728 https://doi.org/10.1139/Z10-011 en eng HAL CCSD NRC Research Press info:eu-repo/semantics/altIdentifier/doi/10.1139/Z10-011 hal-00451728 https://hal.science/hal-00451728 doi:10.1139/Z10-011 PRODINRA: 248289 WOS: 000277451200008 ISSN: 0008-4301 EISSN: 1480-3283 Canadian Journal of Zoology https://hal.science/hal-00451728 Canadian Journal of Zoology, 2010, 88 (4), pp.416-426. ⟨10.1139/Z10-011⟩ small mammals prey population densities diet Barn Owl [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2010 ftsupagro https://doi.org/10.1139/Z10-011 2024-05-22T23:35:15Z E-mail Addresses: nadine.bernard@univ-fcomte.fr International audience The diet of the Barn Owl (Tyto alba (Scopoli, 1769)) was studied over an 8-year period in the Jura mountains of France, during two population surges of its main rodent prey (common voles (Microtus arvalis (Pallas, 1778)) and European water voles (Arvicola terrestris (L.,1758))), allowing us to test whether T. alba is an opportunistic predator as is often cited in the literature or exhibits more complex patterns of prey selection as is reported in arid environments. Small mammals were sampled by trapping and index methods. We observed (i) significant correlations between the proportions of A. terrestris and M. arvalis and woodland rodents in the diet and their respective densities in the field; (ii) interactions between populations of A. terrestris and M. arvalis, indicating that the proportion of each species in diet was affected by the density of the other; (iii) proportions of red-toothed shrews (genus Sorex (L., 1758)) in the diet did not correlate with their abundance in the field, indicating that those species were likely to be preyed upon when others were no longer available. This confirms that T. alba is generally opportunistic; however, prey selection of a focal species (e.g., Sorex spp., grassland species) can be affected by the density or availability of the other prey species Article in Journal/Newspaper Microtus arvalis Portail HAL Institut Agro Montpellier Jura ENVELOPE(13.501,13.501,68.062,68.062) Canadian Journal of Zoology 88 4 416 426 |
institution |
Open Polar |
collection |
Portail HAL Institut Agro Montpellier |
op_collection_id |
ftsupagro |
language |
English |
topic |
small mammals prey population densities diet Barn Owl [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
small mammals prey population densities diet Barn Owl [SDE.BE]Environmental Sciences/Biodiversity and Ecology Bernard, Nadine Michelat, Dominique Raoul, Francis Quéré, Jean-Pierre Delattre, Pierre Giraudoux, Patrick Dietary response of barn owls (Tyto alba) to large variations in Microtus arvalis and Arvicola terrestris prey populations |
topic_facet |
small mammals prey population densities diet Barn Owl [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
E-mail Addresses: nadine.bernard@univ-fcomte.fr International audience The diet of the Barn Owl (Tyto alba (Scopoli, 1769)) was studied over an 8-year period in the Jura mountains of France, during two population surges of its main rodent prey (common voles (Microtus arvalis (Pallas, 1778)) and European water voles (Arvicola terrestris (L.,1758))), allowing us to test whether T. alba is an opportunistic predator as is often cited in the literature or exhibits more complex patterns of prey selection as is reported in arid environments. Small mammals were sampled by trapping and index methods. We observed (i) significant correlations between the proportions of A. terrestris and M. arvalis and woodland rodents in the diet and their respective densities in the field; (ii) interactions between populations of A. terrestris and M. arvalis, indicating that the proportion of each species in diet was affected by the density of the other; (iii) proportions of red-toothed shrews (genus Sorex (L., 1758)) in the diet did not correlate with their abundance in the field, indicating that those species were likely to be preyed upon when others were no longer available. This confirms that T. alba is generally opportunistic; however, prey selection of a focal species (e.g., Sorex spp., grassland species) can be affected by the density or availability of the other prey species |
author2 |
Laboratoire Chrono-environnement (UMR 6249) (LCE) Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Centre de Biologie pour la Gestion des Populations (UMR CBGP) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD France-Sud )-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) |
format |
Article in Journal/Newspaper |
author |
Bernard, Nadine Michelat, Dominique Raoul, Francis Quéré, Jean-Pierre Delattre, Pierre Giraudoux, Patrick |
author_facet |
Bernard, Nadine Michelat, Dominique Raoul, Francis Quéré, Jean-Pierre Delattre, Pierre Giraudoux, Patrick |
author_sort |
Bernard, Nadine |
title |
Dietary response of barn owls (Tyto alba) to large variations in Microtus arvalis and Arvicola terrestris prey populations |
title_short |
Dietary response of barn owls (Tyto alba) to large variations in Microtus arvalis and Arvicola terrestris prey populations |
title_full |
Dietary response of barn owls (Tyto alba) to large variations in Microtus arvalis and Arvicola terrestris prey populations |
title_fullStr |
Dietary response of barn owls (Tyto alba) to large variations in Microtus arvalis and Arvicola terrestris prey populations |
title_full_unstemmed |
Dietary response of barn owls (Tyto alba) to large variations in Microtus arvalis and Arvicola terrestris prey populations |
title_sort |
dietary response of barn owls (tyto alba) to large variations in microtus arvalis and arvicola terrestris prey populations |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00451728 https://doi.org/10.1139/Z10-011 |
long_lat |
ENVELOPE(13.501,13.501,68.062,68.062) |
geographic |
Jura |
geographic_facet |
Jura |
genre |
Microtus arvalis |
genre_facet |
Microtus arvalis |
op_source |
ISSN: 0008-4301 EISSN: 1480-3283 Canadian Journal of Zoology https://hal.science/hal-00451728 Canadian Journal of Zoology, 2010, 88 (4), pp.416-426. ⟨10.1139/Z10-011⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1139/Z10-011 hal-00451728 https://hal.science/hal-00451728 doi:10.1139/Z10-011 PRODINRA: 248289 WOS: 000277451200008 |
op_doi |
https://doi.org/10.1139/Z10-011 |
container_title |
Canadian Journal of Zoology |
container_volume |
88 |
container_issue |
4 |
container_start_page |
416 |
op_container_end_page |
426 |
_version_ |
1802008637735960576 |