Diet of the burrowing owl (Athene cunicularia) in two areas with different land use in south-central La Pampa Province, Argentina

We studied the diet of the Burrowing Owl (Athene cunicularia) in two areas with different land use in the central sector of the Monte de Llanuras y Mesetas Ecoregion, La Pampa Province, Argentina: a protected area (Lihué Calel National Park) and an intensively grazed cattle ranch (La Manuela). We id...

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Autores principales: de Tommaso, D.C., Callicó Fortunato, R.G., Teta, P., Pereira, J.A.
Formato: JOUR
Materias:
Food habits
Monte de llanuras y mesetas
Small mammals
Strigidae
Strigiformes
Athene cunicularia
Bos
Coleoptera
Mammalia
Rodentia
Scorpiones
Speotyto cunicularia
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00733407_v24_n2_p87_deTommaso
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00733407_v24_n2_p87_deTommaso
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spelling todo:paper_00733407_v24_n2_p87_deTommaso2023-10-03T14:53:28Z Diet of the burrowing owl (Athene cunicularia) in two areas with different land use in south-central La Pampa Province, Argentina de Tommaso, D.C. Callicó Fortunato, R.G. Teta, P. Pereira, J.A. Food habits Monte de llanuras y mesetas Small mammals Strigidae Strigiformes Athene cunicularia Bos Coleoptera Mammalia Rodentia Scorpiones Speotyto cunicularia Strigidae Strigiformes We studied the diet of the Burrowing Owl (Athene cunicularia) in two areas with different land use in the central sector of the Monte de Llanuras y Mesetas Ecoregion, La Pampa Province, Argentina: a protected area (Lihué Calel National Park) and an intensively grazed cattle ranch (La Manuela). We identified 1251 prey items, mainly corresponding to Coleoptera, Scorpiones and Rodentia. In both areas the Burrowing Owl was a generalist feeder. The frequency of the different prey items in the diet varied significantly between areas, both during the reproductive and the non-reproductive seasons. However, the mean weight of ingested small mammals and the standardized trophic niche breadth were similar between areas and to those reported for this species in other sectors of the Monte de Llanuras y Mesetas Ecoregion. According to the ingested biomass, the Burrowing Owl behaved as a carnivorous predator during the reproductive season and as carnivorous-insectivorous during the non-reproductive one. Fil:Callicó Fortunato, R.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pereira, J.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00733407_v24_n2_p87_deTommaso
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Food habits
Monte de llanuras y mesetas
Small mammals
Strigidae
Strigiformes
Athene cunicularia
Bos
Coleoptera
Mammalia
Rodentia
Scorpiones
Speotyto cunicularia
Strigidae
Strigiformes
spellingShingle Food habits
Monte de llanuras y mesetas
Small mammals
Strigidae
Strigiformes
Athene cunicularia
Bos
Coleoptera
Mammalia
Rodentia
Scorpiones
Speotyto cunicularia
Strigidae
Strigiformes
de Tommaso, D.C.
Callicó Fortunato, R.G.
Teta, P.
Pereira, J.A.
Diet of the burrowing owl (Athene cunicularia) in two areas with different land use in south-central La Pampa Province, Argentina
topic_facet Food habits
Monte de llanuras y mesetas
Small mammals
Strigidae
Strigiformes
Athene cunicularia
Bos
Coleoptera
Mammalia
Rodentia
Scorpiones
Speotyto cunicularia
Strigidae
Strigiformes
description We studied the diet of the Burrowing Owl (Athene cunicularia) in two areas with different land use in the central sector of the Monte de Llanuras y Mesetas Ecoregion, La Pampa Province, Argentina: a protected area (Lihué Calel National Park) and an intensively grazed cattle ranch (La Manuela). We identified 1251 prey items, mainly corresponding to Coleoptera, Scorpiones and Rodentia. In both areas the Burrowing Owl was a generalist feeder. The frequency of the different prey items in the diet varied significantly between areas, both during the reproductive and the non-reproductive seasons. However, the mean weight of ingested small mammals and the standardized trophic niche breadth were similar between areas and to those reported for this species in other sectors of the Monte de Llanuras y Mesetas Ecoregion. According to the ingested biomass, the Burrowing Owl behaved as a carnivorous predator during the reproductive season and as carnivorous-insectivorous during the non-reproductive one.
format JOUR
author de Tommaso, D.C.
Callicó Fortunato, R.G.
Teta, P.
Pereira, J.A.
author_facet de Tommaso, D.C.
Callicó Fortunato, R.G.
Teta, P.
Pereira, J.A.
author_sort de Tommaso, D.C.
title Diet of the burrowing owl (Athene cunicularia) in two areas with different land use in south-central La Pampa Province, Argentina
title_short Diet of the burrowing owl (Athene cunicularia) in two areas with different land use in south-central La Pampa Province, Argentina
title_full Diet of the burrowing owl (Athene cunicularia) in two areas with different land use in south-central La Pampa Province, Argentina
title_fullStr Diet of the burrowing owl (Athene cunicularia) in two areas with different land use in south-central La Pampa Province, Argentina
title_full_unstemmed Diet of the burrowing owl (Athene cunicularia) in two areas with different land use in south-central La Pampa Province, Argentina
title_sort diet of the burrowing owl (athene cunicularia) in two areas with different land use in south-central la pampa province, argentina
url http://hdl.handle.net/20.500.12110/paper_00733407_v24_n2_p87_deTommaso
work_keys_str_mv AT detommasodc dietoftheburrowingowlathenecuniculariaintwoareaswithdifferentlanduseinsouthcentrallapampaprovinceargentina
AT callicofortunatorg dietoftheburrowingowlathenecuniculariaintwoareaswithdifferentlanduseinsouthcentrallapampaprovinceargentina
AT tetap dietoftheburrowingowlathenecuniculariaintwoareaswithdifferentlanduseinsouthcentrallapampaprovinceargentina
AT pereiraja dietoftheburrowingowlathenecuniculariaintwoareaswithdifferentlanduseinsouthcentrallapampaprovinceargentina
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