Impacts of Intraspecific Kleptoparasitism and Diet Shifts on Razorbill Alca torda productivity at the Gannet Islands, Labrador
Intraspecific kleptoparasitism, the stealing of food from members of the same species, has received widespread but mostly superficialattention in the scientific literature. However, the effects of such behavior can be significant. Here we report on high rates of intraspecifickleptoparasitism in the...
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African Seabird Group
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ftunivtasecite:oai:ecite.utas.edu.au:77910 2023-05-15T13:12:12+02:00 Impacts of Intraspecific Kleptoparasitism and Diet Shifts on Razorbill Alca torda productivity at the Gannet Islands, Labrador Lavers, JL Jones, IL 2007 application/pdf http://www.marineornithology.org/ http://ecite.utas.edu.au/77910 en eng African Seabird Group http://ecite.utas.edu.au/77910/1/Lavers & Jones 07 - RAZO Klepto & Productivity.pdf Lavers, JL and Jones, IL, Impacts of Intraspecific Kleptoparasitism and Diet Shifts on Razorbill Alca torda productivity at the Gannet Islands, Labrador, Marine Ornithology, 35 pp. 1-7. ISSN 1018-3337 (2007) [Refereed Article] http://ecite.utas.edu.au/77910 Biological Sciences Ecology Ecology not elsewhere classified Refereed Article PeerReviewed 2007 ftunivtasecite 2019-12-13T21:43:53Z Intraspecific kleptoparasitism, the stealing of food from members of the same species, has received widespread but mostly superficialattention in the scientific literature. However, the effects of such behavior can be significant. Here we report on high rates of intraspecifickleptoparasitism in the Razorbill Alca torda at the Gannet Islands, a behavior that appears to be colony-specific. Razorbills carry their preyconspicuously in the bill, making them vulnerable to kleptoparasitic attacks from neighboring birds. We examined the relationship betweenthe frequency of kleptoparasitic attacks and the prey species carried by breeding adults. During 20032006, 69% of all Razorbills carryingfood to a chick were attacked (n = 182) and of these attacks, 18% (n = 22) were successful. Group attacks (two or more kleptoparasites) weremore successful numerically (27%, n = 71), but only one member of the group ever received the reward. The frequency of kleptoparasitismobserved by Razorbills at the Gannet Islands is one of the highest reported for any seabird, including many specialist kleptoparasites such asfrigatebirds. This finding, combined with the lowest observed Razorbill productivity (overall success = 0.39, n = 222) for the Gannet Islandsand drastic shifts in diet, may indicate decreased food availability. Article in Journal/Newspaper Alca torda Razorbill eCite UTAS (University of Tasmania) Gannet Islands ENVELOPE(-56.536,-56.536,53.941,53.941) |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Ecology not elsewhere classified |
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Biological Sciences Ecology Ecology not elsewhere classified Lavers, JL Jones, IL Impacts of Intraspecific Kleptoparasitism and Diet Shifts on Razorbill Alca torda productivity at the Gannet Islands, Labrador |
topic_facet |
Biological Sciences Ecology Ecology not elsewhere classified |
description |
Intraspecific kleptoparasitism, the stealing of food from members of the same species, has received widespread but mostly superficialattention in the scientific literature. However, the effects of such behavior can be significant. Here we report on high rates of intraspecifickleptoparasitism in the Razorbill Alca torda at the Gannet Islands, a behavior that appears to be colony-specific. Razorbills carry their preyconspicuously in the bill, making them vulnerable to kleptoparasitic attacks from neighboring birds. We examined the relationship betweenthe frequency of kleptoparasitic attacks and the prey species carried by breeding adults. During 20032006, 69% of all Razorbills carryingfood to a chick were attacked (n = 182) and of these attacks, 18% (n = 22) were successful. Group attacks (two or more kleptoparasites) weremore successful numerically (27%, n = 71), but only one member of the group ever received the reward. The frequency of kleptoparasitismobserved by Razorbills at the Gannet Islands is one of the highest reported for any seabird, including many specialist kleptoparasites such asfrigatebirds. This finding, combined with the lowest observed Razorbill productivity (overall success = 0.39, n = 222) for the Gannet Islandsand drastic shifts in diet, may indicate decreased food availability. |
format |
Article in Journal/Newspaper |
author |
Lavers, JL Jones, IL |
author_facet |
Lavers, JL Jones, IL |
author_sort |
Lavers, JL |
title |
Impacts of Intraspecific Kleptoparasitism and Diet Shifts on Razorbill Alca torda productivity at the Gannet Islands, Labrador |
title_short |
Impacts of Intraspecific Kleptoparasitism and Diet Shifts on Razorbill Alca torda productivity at the Gannet Islands, Labrador |
title_full |
Impacts of Intraspecific Kleptoparasitism and Diet Shifts on Razorbill Alca torda productivity at the Gannet Islands, Labrador |
title_fullStr |
Impacts of Intraspecific Kleptoparasitism and Diet Shifts on Razorbill Alca torda productivity at the Gannet Islands, Labrador |
title_full_unstemmed |
Impacts of Intraspecific Kleptoparasitism and Diet Shifts on Razorbill Alca torda productivity at the Gannet Islands, Labrador |
title_sort |
impacts of intraspecific kleptoparasitism and diet shifts on razorbill alca torda productivity at the gannet islands, labrador |
publisher |
African Seabird Group |
publishDate |
2007 |
url |
http://www.marineornithology.org/ http://ecite.utas.edu.au/77910 |
long_lat |
ENVELOPE(-56.536,-56.536,53.941,53.941) |
geographic |
Gannet Islands |
geographic_facet |
Gannet Islands |
genre |
Alca torda Razorbill |
genre_facet |
Alca torda Razorbill |
op_relation |
http://ecite.utas.edu.au/77910/1/Lavers & Jones 07 - RAZO Klepto & Productivity.pdf Lavers, JL and Jones, IL, Impacts of Intraspecific Kleptoparasitism and Diet Shifts on Razorbill Alca torda productivity at the Gannet Islands, Labrador, Marine Ornithology, 35 pp. 1-7. ISSN 1018-3337 (2007) [Refereed Article] http://ecite.utas.edu.au/77910 |
_version_ |
1766250800310386688 |