Sexual differences in the behavioural response to a variation in predation risk
Predators may influence their prey populations not only through direct lethal effects, but also by causing behavioural changes. The natural expansion of the wolf (Canis lupus) into the Alps provided the rare opportunity to monitor the responses of a prey species to the return of a large predator. De...
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Language: | English |
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Online Access: | http://hdl.handle.net/11392/2475874 https://doi.org/10.1111/eth.12887 https://onlinelibrary.wiley.com/doi/10.1111/eth.12887 |
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ftunivferrarair:oai:iris.unife.it:11392/2475874 2024-02-11T10:02:46+01:00 Sexual differences in the behavioural response to a variation in predation risk Grignolio, Stefano Brivio, Francesca Sica, Nicoletta Apollonio, Marco Grignolio, Stefano Brivio, Francesca Sica, Nicoletta Apollonio, Marco 2019 STAMPA http://hdl.handle.net/11392/2475874 https://doi.org/10.1111/eth.12887 https://onlinelibrary.wiley.com/doi/10.1111/eth.12887 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000478748400002 volume:125 issue:9 firstpage:603 lastpage:612 numberofpages:10 journal:ETHOLOGY http://hdl.handle.net/11392/2475874 doi:10.1111/eth.12887 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85066074535 https://onlinelibrary.wiley.com/doi/10.1111/eth.12887 info:eu-repo/semantics/closedAccess Alpine ibex antipredator behaviour density modification group size risk effects wolf recolonisation info:eu-repo/semantics/article 2019 ftunivferrarair https://doi.org/10.1111/eth.12887 2024-01-17T17:41:05Z Predators may influence their prey populations not only through direct lethal effects, but also by causing behavioural changes. The natural expansion of the wolf (Canis lupus) into the Alps provided the rare opportunity to monitor the responses of a prey species to the return of a large predator. Density effects have rarely been considered in the study of antipredator strategies. We examined the effects of wolf recolonisa‐ tion and density modifications on group size and use of safe areas by Alpine ibex (Capra ibex) in Gran Paradiso National Park (Italy), where no large terrestrial predator has been present for about a century. We documented that, in a few years, the vari‐ ation in the factors affecting the landscape of fear caused significant modifications in ibex behavioural patterns that could not be accounted for by density changes only. Male groups decreased in size and moved closer to safer areas. The distance of fe‐ male groups from refuge sites, instead, was not affected, and their propensity to live in groups was scarcely modified. Behavioural modifications likely caused a reduction in nutrient intake in adult male ibex, as they necessarily used lower‐quality feeding patches. Our results showed that male and female ibex, which are characterised by a strong dimorphism, adopted different strategies to solve the conflicting demands of foraging efficiently and avoiding predators. Article in Journal/Newspaper Canis lupus Università degli Studi di Ferrara: CINECA IRIS Ethology 125 9 603 612 |
institution |
Open Polar |
collection |
Università degli Studi di Ferrara: CINECA IRIS |
op_collection_id |
ftunivferrarair |
language |
English |
topic |
Alpine ibex antipredator behaviour density modification group size risk effects wolf recolonisation |
spellingShingle |
Alpine ibex antipredator behaviour density modification group size risk effects wolf recolonisation Grignolio, Stefano Brivio, Francesca Sica, Nicoletta Apollonio, Marco Sexual differences in the behavioural response to a variation in predation risk |
topic_facet |
Alpine ibex antipredator behaviour density modification group size risk effects wolf recolonisation |
description |
Predators may influence their prey populations not only through direct lethal effects, but also by causing behavioural changes. The natural expansion of the wolf (Canis lupus) into the Alps provided the rare opportunity to monitor the responses of a prey species to the return of a large predator. Density effects have rarely been considered in the study of antipredator strategies. We examined the effects of wolf recolonisa‐ tion and density modifications on group size and use of safe areas by Alpine ibex (Capra ibex) in Gran Paradiso National Park (Italy), where no large terrestrial predator has been present for about a century. We documented that, in a few years, the vari‐ ation in the factors affecting the landscape of fear caused significant modifications in ibex behavioural patterns that could not be accounted for by density changes only. Male groups decreased in size and moved closer to safer areas. The distance of fe‐ male groups from refuge sites, instead, was not affected, and their propensity to live in groups was scarcely modified. Behavioural modifications likely caused a reduction in nutrient intake in adult male ibex, as they necessarily used lower‐quality feeding patches. Our results showed that male and female ibex, which are characterised by a strong dimorphism, adopted different strategies to solve the conflicting demands of foraging efficiently and avoiding predators. |
author2 |
Grignolio, Stefano Brivio, Francesca Sica, Nicoletta Apollonio, Marco |
format |
Article in Journal/Newspaper |
author |
Grignolio, Stefano Brivio, Francesca Sica, Nicoletta Apollonio, Marco |
author_facet |
Grignolio, Stefano Brivio, Francesca Sica, Nicoletta Apollonio, Marco |
author_sort |
Grignolio, Stefano |
title |
Sexual differences in the behavioural response to a variation in predation risk |
title_short |
Sexual differences in the behavioural response to a variation in predation risk |
title_full |
Sexual differences in the behavioural response to a variation in predation risk |
title_fullStr |
Sexual differences in the behavioural response to a variation in predation risk |
title_full_unstemmed |
Sexual differences in the behavioural response to a variation in predation risk |
title_sort |
sexual differences in the behavioural response to a variation in predation risk |
publishDate |
2019 |
url |
http://hdl.handle.net/11392/2475874 https://doi.org/10.1111/eth.12887 https://onlinelibrary.wiley.com/doi/10.1111/eth.12887 |
genre |
Canis lupus |
genre_facet |
Canis lupus |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000478748400002 volume:125 issue:9 firstpage:603 lastpage:612 numberofpages:10 journal:ETHOLOGY http://hdl.handle.net/11392/2475874 doi:10.1111/eth.12887 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85066074535 https://onlinelibrary.wiley.com/doi/10.1111/eth.12887 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1111/eth.12887 |
container_title |
Ethology |
container_volume |
125 |
container_issue |
9 |
container_start_page |
603 |
op_container_end_page |
612 |
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1790598829045710848 |