Hunting behaviour and breeding performance of northern goshawks Accipiter gentilis, in relation to resource availability, sex, age and morphology
Animal territories that differ in the availability of food resources will require (all other things being equal) different levels of effort for successful reproduction. As a consequence, breeding performance may become most strongly dependent on factors that affect individual foraging where resource...
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ftcsic:oai:digital.csic.es:10261/85308 2024-02-11T09:54:33+01:00 Hunting behaviour and breeding performance of northern goshawks Accipiter gentilis, in relation to resource availability, sex, age and morphology Penteriani, Vincenzo Rutz, Christian Kenward, Robert 2013 http://hdl.handle.net/10261/85308 https://doi.org/10.1007/s00114-013-1093-7 en eng Springer http://dx.doi.org/10.1007/s00114-013-1093-7 Naturwissenschaften, 100(10): 935-942 (2013) http://hdl.handle.net/10261/85308 doi:10.1007/s00114-013-1093-7 open Accipiter gentilis Age Breeding performance Foraging movements Goshawk Habitat heterogeneity Phenotypic traits artÃculo http://purl.org/coar/resource_type/c_6501 2013 ftcsic https://doi.org/10.1007/s00114-013-1093-7 2024-01-16T09:53:29Z Animal territories that differ in the availability of food resources will require (all other things being equal) different levels of effort for successful reproduction. As a consequence, breeding performance may become most strongly dependent on factors that affect individual foraging where resources are poor. We investigated potential links between foraging behaviour, reproductive performance and morphology in a goshawk Accipiter gentilis population, which experienced markedly different resource levels in two different parts of the study area (rabbit-rich vs. rabbit-poor areas). Our analyses revealed (1) that rabbit abundance positively affected male reproductive output; (2) that age, size and rabbit abundance (during winter) positively affected different components of female reproductive output; (3) that foraging movements were inversely affected by rabbit abundance for both sexes (for females, this may mainly have reflected poor provisioning by males in the rabbit-poor area); (4) that younger breeders (both in males and females) tended to move over larger distances than older individuals (which may have reflected both a lack of hunting experience and mate searching); and (5) that male body size (wing length) showed some covariation with resource conditions (suggesting possible adaptations to hunting agile avian prey in the rabbit-poor area). Although we are unable to establish firm causal relationships with our observational data set, our results provide an example of how territory quality (here, food abundance) and individual features (here, age and morphology) may combine to shape a predator's foraging behaviour and, ultimately, its breeding performance Peer reviewed Article in Journal/Newspaper Accipiter gentilis Digital.CSIC (Spanish National Research Council) Naturwissenschaften 100 10 935 942 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Accipiter gentilis Age Breeding performance Foraging movements Goshawk Habitat heterogeneity Phenotypic traits |
spellingShingle |
Accipiter gentilis Age Breeding performance Foraging movements Goshawk Habitat heterogeneity Phenotypic traits Penteriani, Vincenzo Rutz, Christian Kenward, Robert Hunting behaviour and breeding performance of northern goshawks Accipiter gentilis, in relation to resource availability, sex, age and morphology |
topic_facet |
Accipiter gentilis Age Breeding performance Foraging movements Goshawk Habitat heterogeneity Phenotypic traits |
description |
Animal territories that differ in the availability of food resources will require (all other things being equal) different levels of effort for successful reproduction. As a consequence, breeding performance may become most strongly dependent on factors that affect individual foraging where resources are poor. We investigated potential links between foraging behaviour, reproductive performance and morphology in a goshawk Accipiter gentilis population, which experienced markedly different resource levels in two different parts of the study area (rabbit-rich vs. rabbit-poor areas). Our analyses revealed (1) that rabbit abundance positively affected male reproductive output; (2) that age, size and rabbit abundance (during winter) positively affected different components of female reproductive output; (3) that foraging movements were inversely affected by rabbit abundance for both sexes (for females, this may mainly have reflected poor provisioning by males in the rabbit-poor area); (4) that younger breeders (both in males and females) tended to move over larger distances than older individuals (which may have reflected both a lack of hunting experience and mate searching); and (5) that male body size (wing length) showed some covariation with resource conditions (suggesting possible adaptations to hunting agile avian prey in the rabbit-poor area). Although we are unable to establish firm causal relationships with our observational data set, our results provide an example of how territory quality (here, food abundance) and individual features (here, age and morphology) may combine to shape a predator's foraging behaviour and, ultimately, its breeding performance Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Penteriani, Vincenzo Rutz, Christian Kenward, Robert |
author_facet |
Penteriani, Vincenzo Rutz, Christian Kenward, Robert |
author_sort |
Penteriani, Vincenzo |
title |
Hunting behaviour and breeding performance of northern goshawks Accipiter gentilis, in relation to resource availability, sex, age and morphology |
title_short |
Hunting behaviour and breeding performance of northern goshawks Accipiter gentilis, in relation to resource availability, sex, age and morphology |
title_full |
Hunting behaviour and breeding performance of northern goshawks Accipiter gentilis, in relation to resource availability, sex, age and morphology |
title_fullStr |
Hunting behaviour and breeding performance of northern goshawks Accipiter gentilis, in relation to resource availability, sex, age and morphology |
title_full_unstemmed |
Hunting behaviour and breeding performance of northern goshawks Accipiter gentilis, in relation to resource availability, sex, age and morphology |
title_sort |
hunting behaviour and breeding performance of northern goshawks accipiter gentilis, in relation to resource availability, sex, age and morphology |
publisher |
Springer |
publishDate |
2013 |
url |
http://hdl.handle.net/10261/85308 https://doi.org/10.1007/s00114-013-1093-7 |
genre |
Accipiter gentilis |
genre_facet |
Accipiter gentilis |
op_relation |
http://dx.doi.org/10.1007/s00114-013-1093-7 Naturwissenschaften, 100(10): 935-942 (2013) http://hdl.handle.net/10261/85308 doi:10.1007/s00114-013-1093-7 |
op_rights |
open |
op_doi |
https://doi.org/10.1007/s00114-013-1093-7 |
container_title |
Naturwissenschaften |
container_volume |
100 |
container_issue |
10 |
container_start_page |
935 |
op_container_end_page |
942 |
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1790598733026557952 |