Risk-taking behavior of bull-headed shrikes that recently colonized islands
Abstract Individuals which have invaded urbanized environments are reported to engage in riskier behaviors, possibly influenced by the scarcity of predators in urbanized areas. Here, we studied the risk-taking behavior of birds which had invaded a new natural environment, rather than an artificial u...
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2020
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Online Access: | http://dx.doi.org/10.1093/cz/zoaa036 http://academic.oup.com/cz/advance-article-pdf/doi/10.1093/cz/zoaa036/33932386/zoaa036.pdf http://academic.oup.com/cz/article-pdf/67/2/177/36972025/zoaa036.pdf |
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croxfordunivpr:10.1093/cz/zoaa036 2023-10-09T21:55:33+02:00 Risk-taking behavior of bull-headed shrikes that recently colonized islands Hamao, Shoji Torikai, Hisahiro Yoshikawa, Midori Yamamoto, Yutaka Ijichi, Tugeru Carere, Claudio National Museum of Nature and Science 2020 http://dx.doi.org/10.1093/cz/zoaa036 http://academic.oup.com/cz/advance-article-pdf/doi/10.1093/cz/zoaa036/33932386/zoaa036.pdf http://academic.oup.com/cz/article-pdf/67/2/177/36972025/zoaa036.pdf en eng Oxford University Press (OUP) http://creativecommons.org/licenses/by-nc/4.0/ Current Zoology volume 67, issue 2, page 177-182 ISSN 2396-9814 Animal Science and Zoology journal-article 2020 croxfordunivpr https://doi.org/10.1093/cz/zoaa036 2023-09-22T11:16:45Z Abstract Individuals which have invaded urbanized environments are reported to engage in riskier behaviors, possibly influenced by the scarcity of predators in urbanized areas. Here, we studied the risk-taking behavior of birds which had invaded a new natural environment, rather than an artificial urban environment, using recently established populations of the bull-headed shrike Lanius bucephalus, which naturally colonized three subtropical islands in Japan. We compared flight initiation distance (FID), the distance at which an individual approached by a human initiates flight, between the islands and the temperate mainland. FID was longer for the insular shrikes compared with the mainland shrikes after controlling for other factors, indicating that the individuals which had invaded a new natural environment had a lower propensity for risk-taking. A possible explanation for these results is that low risk-taking behavior might be adaptive on the islands due to predation by the black rat Rattus rattus, an unfamiliar predator not found in shrike habitats on the temperate mainland. Further studies are needed to examine the nest predation rate, predator species, and nest site selection of these insular shrike populations. Article in Journal/Newspaper Rattus rattus Oxford University Press (via Crossref) Fid ENVELOPE(-65.939,-65.939,-68.664,-68.664) Fid The ENVELOPE(-65.939,-65.939,-68.664,-68.664) Current Zoology 67 2 177 182 |
institution |
Open Polar |
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Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Animal Science and Zoology |
spellingShingle |
Animal Science and Zoology Hamao, Shoji Torikai, Hisahiro Yoshikawa, Midori Yamamoto, Yutaka Ijichi, Tugeru Risk-taking behavior of bull-headed shrikes that recently colonized islands |
topic_facet |
Animal Science and Zoology |
description |
Abstract Individuals which have invaded urbanized environments are reported to engage in riskier behaviors, possibly influenced by the scarcity of predators in urbanized areas. Here, we studied the risk-taking behavior of birds which had invaded a new natural environment, rather than an artificial urban environment, using recently established populations of the bull-headed shrike Lanius bucephalus, which naturally colonized three subtropical islands in Japan. We compared flight initiation distance (FID), the distance at which an individual approached by a human initiates flight, between the islands and the temperate mainland. FID was longer for the insular shrikes compared with the mainland shrikes after controlling for other factors, indicating that the individuals which had invaded a new natural environment had a lower propensity for risk-taking. A possible explanation for these results is that low risk-taking behavior might be adaptive on the islands due to predation by the black rat Rattus rattus, an unfamiliar predator not found in shrike habitats on the temperate mainland. Further studies are needed to examine the nest predation rate, predator species, and nest site selection of these insular shrike populations. |
author2 |
Carere, Claudio National Museum of Nature and Science |
format |
Article in Journal/Newspaper |
author |
Hamao, Shoji Torikai, Hisahiro Yoshikawa, Midori Yamamoto, Yutaka Ijichi, Tugeru |
author_facet |
Hamao, Shoji Torikai, Hisahiro Yoshikawa, Midori Yamamoto, Yutaka Ijichi, Tugeru |
author_sort |
Hamao, Shoji |
title |
Risk-taking behavior of bull-headed shrikes that recently colonized islands |
title_short |
Risk-taking behavior of bull-headed shrikes that recently colonized islands |
title_full |
Risk-taking behavior of bull-headed shrikes that recently colonized islands |
title_fullStr |
Risk-taking behavior of bull-headed shrikes that recently colonized islands |
title_full_unstemmed |
Risk-taking behavior of bull-headed shrikes that recently colonized islands |
title_sort |
risk-taking behavior of bull-headed shrikes that recently colonized islands |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/cz/zoaa036 http://academic.oup.com/cz/advance-article-pdf/doi/10.1093/cz/zoaa036/33932386/zoaa036.pdf http://academic.oup.com/cz/article-pdf/67/2/177/36972025/zoaa036.pdf |
long_lat |
ENVELOPE(-65.939,-65.939,-68.664,-68.664) ENVELOPE(-65.939,-65.939,-68.664,-68.664) |
geographic |
Fid Fid The |
geographic_facet |
Fid Fid The |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
Current Zoology volume 67, issue 2, page 177-182 ISSN 2396-9814 |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1093/cz/zoaa036 |
container_title |
Current Zoology |
container_volume |
67 |
container_issue |
2 |
container_start_page |
177 |
op_container_end_page |
182 |
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1779319502728593408 |