Only the largest terrestrial carnivores increase their dietary breadth with increasing prey richness
1. Animals should adapt their foraging habits, changing their dietary breadth in response to variation in the richness and availability of food resources. Understanding how species modify their dietary breadth according to variation in resource richness would support predictions of their responses t...
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ftconicet:oai:ri.conicet.gov.ar:11336/108261 2023-10-09T21:50:38+02:00 Only the largest terrestrial carnivores increase their dietary breadth with increasing prey richness Ferretti, Francesco Lovari, Sandro Lucherini, Mauro Hayward, Matt W. Stephens, Philip application/pdf http://hdl.handle.net/11336/108261 eng eng Wiley Blackwell Publishing, Inc info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/mam.12197 info:eu-repo/semantics/altIdentifier/doi/10.1111/mam.12197 http://hdl.handle.net/11336/108261 Ferretti, Francesco; Lovari, Sandro; Lucherini, Mauro; Hayward, Matt W.; Stephens, Philip; Only the largest terrestrial carnivores increase their dietary breadth with increasing prey richness; Wiley Blackwell Publishing, Inc; Mammal Review; 50; 3; 3-6-2020; 291-303 0305-1838 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ CANIDAE FELIDAE FOOD HABITS INTERSPECIFIC COMPETITION LARGE CARNIVORES PREDATOR-PREY RELATIONSHIP https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1111/mam.12197 2023-09-24T19:34:12Z 1. Animals should adapt their foraging habits, changing their dietary breadth in response to variation in the richness and availability of food resources. Understanding how species modify their dietary breadth according to variation in resource richness would support predictions of their responses to environmental changes that alter prey communities.2. We evaluated relationships between the dietary breadth of large terrestrial carnivores and the local richness of large prey (defined as the number of species). We tested alternative predictions suggested by ecological and evolutionary theories: with increasing prey richness, species would (1) show a more diverse diet, thus broadening their dietary breadth, or (2) narrow their dietary breadth, indicating specialisation on a smaller number of prey.3. We collated data from 505 studies of the diets of 12 species of large terrestrial mammalian carnivores to model relationships between two indices of dietary breadth and local prey richness.4. For the majority of species, we found no evidence for narrowing dietary breadth (i.e. increased specialisation) with increasing prey richness. Although the snow leopard and the dhole appeared to use a lower number of large prey species with increasing prey richness, larger sample sizes are needed to support this result.5. With increasing prey richness, the five largest carnivores (puma Puma concolor, spotted hyaena Crocuta crocuta, jaguar Panthera onca, lion Panthera leo, and tiger Panthera tigris), plus the Eurasian lynx Lynx lynx and the grey wolf Canis lupus (which are usually top predators in the areas from which data were obtained), showed greater dietary breadth and/or used a greater number of large prey species (i.e. increased generalism).6. We suggest that dominant large carnivores encounter little competition in expanding their dietary breadth with increasing prey richness; conversely, the dietary niche of subordinate large carnivores is limited by competition with larger, dominant predators. We suggest that, over ... Article in Journal/Newspaper Canis lupus Lynx Lynx lynx lynx CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Mammal Review 50 3 291 303 |
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Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
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ftconicet |
language |
English |
topic |
CANIDAE FELIDAE FOOD HABITS INTERSPECIFIC COMPETITION LARGE CARNIVORES PREDATOR-PREY RELATIONSHIP https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
CANIDAE FELIDAE FOOD HABITS INTERSPECIFIC COMPETITION LARGE CARNIVORES PREDATOR-PREY RELATIONSHIP https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Ferretti, Francesco Lovari, Sandro Lucherini, Mauro Hayward, Matt W. Stephens, Philip Only the largest terrestrial carnivores increase their dietary breadth with increasing prey richness |
topic_facet |
CANIDAE FELIDAE FOOD HABITS INTERSPECIFIC COMPETITION LARGE CARNIVORES PREDATOR-PREY RELATIONSHIP https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
1. Animals should adapt their foraging habits, changing their dietary breadth in response to variation in the richness and availability of food resources. Understanding how species modify their dietary breadth according to variation in resource richness would support predictions of their responses to environmental changes that alter prey communities.2. We evaluated relationships between the dietary breadth of large terrestrial carnivores and the local richness of large prey (defined as the number of species). We tested alternative predictions suggested by ecological and evolutionary theories: with increasing prey richness, species would (1) show a more diverse diet, thus broadening their dietary breadth, or (2) narrow their dietary breadth, indicating specialisation on a smaller number of prey.3. We collated data from 505 studies of the diets of 12 species of large terrestrial mammalian carnivores to model relationships between two indices of dietary breadth and local prey richness.4. For the majority of species, we found no evidence for narrowing dietary breadth (i.e. increased specialisation) with increasing prey richness. Although the snow leopard and the dhole appeared to use a lower number of large prey species with increasing prey richness, larger sample sizes are needed to support this result.5. With increasing prey richness, the five largest carnivores (puma Puma concolor, spotted hyaena Crocuta crocuta, jaguar Panthera onca, lion Panthera leo, and tiger Panthera tigris), plus the Eurasian lynx Lynx lynx and the grey wolf Canis lupus (which are usually top predators in the areas from which data were obtained), showed greater dietary breadth and/or used a greater number of large prey species (i.e. increased generalism).6. We suggest that dominant large carnivores encounter little competition in expanding their dietary breadth with increasing prey richness; conversely, the dietary niche of subordinate large carnivores is limited by competition with larger, dominant predators. We suggest that, over ... |
format |
Article in Journal/Newspaper |
author |
Ferretti, Francesco Lovari, Sandro Lucherini, Mauro Hayward, Matt W. Stephens, Philip |
author_facet |
Ferretti, Francesco Lovari, Sandro Lucherini, Mauro Hayward, Matt W. Stephens, Philip |
author_sort |
Ferretti, Francesco |
title |
Only the largest terrestrial carnivores increase their dietary breadth with increasing prey richness |
title_short |
Only the largest terrestrial carnivores increase their dietary breadth with increasing prey richness |
title_full |
Only the largest terrestrial carnivores increase their dietary breadth with increasing prey richness |
title_fullStr |
Only the largest terrestrial carnivores increase their dietary breadth with increasing prey richness |
title_full_unstemmed |
Only the largest terrestrial carnivores increase their dietary breadth with increasing prey richness |
title_sort |
only the largest terrestrial carnivores increase their dietary breadth with increasing prey richness |
publisher |
Wiley Blackwell Publishing, Inc |
url |
http://hdl.handle.net/11336/108261 |
genre |
Canis lupus Lynx Lynx lynx lynx |
genre_facet |
Canis lupus Lynx Lynx lynx lynx |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/mam.12197 info:eu-repo/semantics/altIdentifier/doi/10.1111/mam.12197 http://hdl.handle.net/11336/108261 Ferretti, Francesco; Lovari, Sandro; Lucherini, Mauro; Hayward, Matt W.; Stephens, Philip; Only the largest terrestrial carnivores increase their dietary breadth with increasing prey richness; Wiley Blackwell Publishing, Inc; Mammal Review; 50; 3; 3-6-2020; 291-303 0305-1838 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1111/mam.12197 |
container_title |
Mammal Review |
container_volume |
50 |
container_issue |
3 |
container_start_page |
291 |
op_container_end_page |
303 |
_version_ |
1779313693317660672 |