Selective consumption of rodents by the Variable hawk Geranoaetus polyosoma (Accipitriformes: Accipitridae) in the Atacama Desert, northern Chile
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 environment...
Published in: | Zoologia |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Pensoft Publishers
2020
|
Subjects: | |
Online Access: | https://doi.org/10.3897/zoologia.37.e55615 https://zoologia.pensoft.net/article/55615/ |
id |
ftpensoft:10.3897/zoologia.37.e55615 |
---|---|
record_format |
openpolar |
spelling |
ftpensoft:10.3897/zoologia.37.e55615 2023-05-15T18:05:17+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 Gil,Claudia Rau,Jaime 2020 text/html https://doi.org/10.3897/zoologia.37.e55615 https://zoologia.pensoft.net/article/55615/ en eng Pensoft Publishers info:eu-repo/semantics/altIdentifier/eissn/1984-4689 info:eu-repo/semantics/openAccess Zoologia 37: 1-6 Diet predation Red-backed hawk trophic ecology Research Article 2020 ftpensoft https://doi.org/10.3897/zoologia.37.e55615 2022-03-01T12:45:30Z 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 Pensoft Publishers Waterhouse ENVELOPE(155.700,155.700,-81.417,-81.417) Zoologia 37 1 6 |
institution |
Open Polar |
collection |
Pensoft Publishers |
op_collection_id |
ftpensoft |
language |
English |
topic |
Diet predation Red-backed hawk trophic ecology |
spellingShingle |
Diet predation Red-backed hawk trophic ecology Muñoz-Pedreros,Andrés Norambuena,Heraldo 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 |
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 Gil,Claudia Rau,Jaime |
author_facet |
Muñoz-Pedreros,Andrés Norambuena,Heraldo 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 |
Pensoft Publishers |
publishDate |
2020 |
url |
https://doi.org/10.3897/zoologia.37.e55615 https://zoologia.pensoft.net/article/55615/ |
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 37: 1-6 |
op_relation |
info:eu-repo/semantics/altIdentifier/eissn/1984-4689 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3897/zoologia.37.e55615 |
container_title |
Zoologia |
container_volume |
37 |
container_start_page |
1 |
op_container_end_page |
6 |
_version_ |
1766176755460079616 |