Selective consumption of rodents by the Variable hawk Geranoaetus polyosoma (Accipitriformes: Accipitridae) in the Atacama Desert, northern Chile
ABSTRACT Geranoaetus polyosoma (Quoy & Gaimard, 1824) is a diurnal raptor widely distributed in South America. Although the trophic ecology of this bird has been more studied in the southern extreme of its range, little information is available on its dietary response to prey supply in desert en...
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ftjscielo:oai:scielo:S1984-46702020000100330 2023-05-15T18:05:16+02:00 Selective consumption of rodents by the Variable hawk Geranoaetus polyosoma (Accipitriformes: Accipitridae) in the Atacama Desert, northern Chile Muñoz-Pedreros,Andrés Norambuena,Heraldo V. Gil,Claudia Rau,Jaime 2020-01-01 text/html http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100330 en eng Sociedade Brasileira de Zoologia 10.3897/zoologia.37.e55615 info:eu-repo/semantics/openAccess Zoologia (Curitiba) v.37 2020 Diet predation Red-backed hawk trophic ecology info:eu-repo/semantics/article 2020 ftjscielo 2021-01-26T08:15:31Z ABSTRACT Geranoaetus polyosoma (Quoy & Gaimard, 1824) is a diurnal raptor widely distributed in South America. Although the trophic ecology of this bird has been more studied in the southern extreme of its range, little information is available on its dietary response to prey supply in desert environments. In the present study, we report on the trophic ecology of G. polyosoma in a sub-urban desert zone in northern Chile, with the following objectives: (1) to quantitatively describe its diet and (2) to determine its dietary selectivity in response to prey supply in the study area. The diet of G. polyosoma consisted mainly of rodents (97.2%). A greater preference (p < 0.05) was observed for the following large prey items (> 19.5 g): two native rodent species, Phyllotis xanthopygus (Waterhouse, 1837) and Eligmodontia puerulus (Philippi, 1896); and two introduced rodent species: Rattus rattus (Linnaeus, 1769) and R. norvegicus (Berkenhout, 1769). Article in Journal/Newspaper Rattus rattus SciELO Brazil (Scientific Electronic Library Online) Waterhouse ENVELOPE(155.700,155.700,-81.417,-81.417) |
institution |
Open Polar |
collection |
SciELO Brazil (Scientific Electronic Library Online) |
op_collection_id |
ftjscielo |
language |
English |
topic |
Diet predation Red-backed hawk trophic ecology |
spellingShingle |
Diet predation Red-backed hawk trophic ecology Muñoz-Pedreros,Andrés Norambuena,Heraldo V. Gil,Claudia Rau,Jaime Selective consumption of rodents by the Variable hawk Geranoaetus polyosoma (Accipitriformes: Accipitridae) in the Atacama Desert, northern Chile |
topic_facet |
Diet predation Red-backed hawk trophic ecology |
description |
ABSTRACT Geranoaetus polyosoma (Quoy & Gaimard, 1824) is a diurnal raptor widely distributed in South America. Although the trophic ecology of this bird has been more studied in the southern extreme of its range, little information is available on its dietary response to prey supply in desert environments. In the present study, we report on the trophic ecology of G. polyosoma in a sub-urban desert zone in northern Chile, with the following objectives: (1) to quantitatively describe its diet and (2) to determine its dietary selectivity in response to prey supply in the study area. The diet of G. polyosoma consisted mainly of rodents (97.2%). A greater preference (p < 0.05) was observed for the following large prey items (> 19.5 g): two native rodent species, Phyllotis xanthopygus (Waterhouse, 1837) and Eligmodontia puerulus (Philippi, 1896); and two introduced rodent species: Rattus rattus (Linnaeus, 1769) and R. norvegicus (Berkenhout, 1769). |
format |
Article in Journal/Newspaper |
author |
Muñoz-Pedreros,Andrés Norambuena,Heraldo V. Gil,Claudia Rau,Jaime |
author_facet |
Muñoz-Pedreros,Andrés Norambuena,Heraldo V. Gil,Claudia Rau,Jaime |
author_sort |
Muñoz-Pedreros,Andrés |
title |
Selective consumption of rodents by the Variable hawk Geranoaetus polyosoma (Accipitriformes: Accipitridae) in the Atacama Desert, northern Chile |
title_short |
Selective consumption of rodents by the Variable hawk Geranoaetus polyosoma (Accipitriformes: Accipitridae) in the Atacama Desert, northern Chile |
title_full |
Selective consumption of rodents by the Variable hawk Geranoaetus polyosoma (Accipitriformes: Accipitridae) in the Atacama Desert, northern Chile |
title_fullStr |
Selective consumption of rodents by the Variable hawk Geranoaetus polyosoma (Accipitriformes: Accipitridae) in the Atacama Desert, northern Chile |
title_full_unstemmed |
Selective consumption of rodents by the Variable hawk Geranoaetus polyosoma (Accipitriformes: Accipitridae) in the Atacama Desert, northern Chile |
title_sort |
selective consumption of rodents by the variable hawk geranoaetus polyosoma (accipitriformes: accipitridae) in the atacama desert, northern chile |
publisher |
Sociedade Brasileira de Zoologia |
publishDate |
2020 |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100330 |
long_lat |
ENVELOPE(155.700,155.700,-81.417,-81.417) |
geographic |
Waterhouse |
geographic_facet |
Waterhouse |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
Zoologia (Curitiba) v.37 2020 |
op_relation |
10.3897/zoologia.37.e55615 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766176738109292544 |