Predation risk and nest-site selection in the Inca tern
Most tern species (Sternidae) are typically open-ground breeders; the Inca tern (Larosterna inca), however, breeds in crevices. This paper reports the first analysis of nest-site characteristics, predation rates, and breeding success in this species. We tested for evidence of natural selection on ne...
Published in: | Canadian Journal of Zoology |
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Online Access: | http://dx.doi.org/10.1139/z02-091 http://www.nrcresearchpress.com/doi/pdf/10.1139/z02-091 |
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crcansciencepubl:10.1139/z02-091 2023-12-17T10:29:57+01:00 Predation risk and nest-site selection in the Inca tern Velando, Alberto Márquez, José C 2002 http://dx.doi.org/10.1139/z02-091 http://www.nrcresearchpress.com/doi/pdf/10.1139/z02-091 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 80, issue 6, page 1117-1123 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2002 crcansciencepubl https://doi.org/10.1139/z02-091 2023-11-19T13:39:01Z Most tern species (Sternidae) are typically open-ground breeders; the Inca tern (Larosterna inca), however, breeds in crevices. This paper reports the first analysis of nest-site characteristics, predation rates, and breeding success in this species. We tested for evidence of natural selection on nest-site preferences in a colony subjected to high rates of predation by the peregrine falcon (Falco peregrinus). Characteristics of occupied sites differed from those of non-occupied sites. Terns selected sites with longer chambers, a greater number of cavities, and more overhead and lateral cover that were located close to the cliff edge. Predation was the main cause of breeding failure, and successful sites differed from unsuccessful sites, which is evidence for ongoing natural selection. Chicks at sites in larger crevices and more cavities remained at the site longer and were less likely to be depredated by peregrine falcons. Probably in response to the presence of predators, adults flew towards the colony in flocks, which "dissolved" at the cliff edge. Sites located far from the edge were more likely to be depredated and adults breeding there fed their chicks less frequently and, consequently, reared lighter chicks. The concordance between site preference and predation pressure on nest-site selection suggests that the use of non-preferred sites imposed a cost in the form of increased nest predation. Article in Journal/Newspaper Falco peregrinus peregrine falcon Canadian Science Publishing (via Crossref) Inca ENVELOPE(-59.194,-59.194,-62.308,-62.308) Canadian Journal of Zoology 80 6 1117 1123 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Velando, Alberto Márquez, José C Predation risk and nest-site selection in the Inca tern |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Most tern species (Sternidae) are typically open-ground breeders; the Inca tern (Larosterna inca), however, breeds in crevices. This paper reports the first analysis of nest-site characteristics, predation rates, and breeding success in this species. We tested for evidence of natural selection on nest-site preferences in a colony subjected to high rates of predation by the peregrine falcon (Falco peregrinus). Characteristics of occupied sites differed from those of non-occupied sites. Terns selected sites with longer chambers, a greater number of cavities, and more overhead and lateral cover that were located close to the cliff edge. Predation was the main cause of breeding failure, and successful sites differed from unsuccessful sites, which is evidence for ongoing natural selection. Chicks at sites in larger crevices and more cavities remained at the site longer and were less likely to be depredated by peregrine falcons. Probably in response to the presence of predators, adults flew towards the colony in flocks, which "dissolved" at the cliff edge. Sites located far from the edge were more likely to be depredated and adults breeding there fed their chicks less frequently and, consequently, reared lighter chicks. The concordance between site preference and predation pressure on nest-site selection suggests that the use of non-preferred sites imposed a cost in the form of increased nest predation. |
format |
Article in Journal/Newspaper |
author |
Velando, Alberto Márquez, José C |
author_facet |
Velando, Alberto Márquez, José C |
author_sort |
Velando, Alberto |
title |
Predation risk and nest-site selection in the Inca tern |
title_short |
Predation risk and nest-site selection in the Inca tern |
title_full |
Predation risk and nest-site selection in the Inca tern |
title_fullStr |
Predation risk and nest-site selection in the Inca tern |
title_full_unstemmed |
Predation risk and nest-site selection in the Inca tern |
title_sort |
predation risk and nest-site selection in the inca tern |
publisher |
Canadian Science Publishing |
publishDate |
2002 |
url |
http://dx.doi.org/10.1139/z02-091 http://www.nrcresearchpress.com/doi/pdf/10.1139/z02-091 |
long_lat |
ENVELOPE(-59.194,-59.194,-62.308,-62.308) |
geographic |
Inca |
geographic_facet |
Inca |
genre |
Falco peregrinus peregrine falcon |
genre_facet |
Falco peregrinus peregrine falcon |
op_source |
Canadian Journal of Zoology volume 80, issue 6, page 1117-1123 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z02-091 |
container_title |
Canadian Journal of Zoology |
container_volume |
80 |
container_issue |
6 |
container_start_page |
1117 |
op_container_end_page |
1123 |
_version_ |
1785582842651082752 |