Proximate and ultimate factors that promote aggregated breeding in the Western Sandpiper
We report that Western Sandpipers ( Calidris mauri ) on Alaska's Yukon-Kuskokwim River Delta exhibited aggregated breeding behavior at a relatively small spatial scale. Prior to clutch initiation, males performing song flight displays on a 36 ha plot were aggregated as were subsequent initial n...
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Kunming Institute of Zoology, Chinese Academy of Sciences
2011
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ftbiolineint:cria:bioline:zr:zr11019 2023-05-15T17:05:40+02:00 Proximate and ultimate factors that promote aggregated breeding in the Western Sandpiper Johnson, Matthew Walters, Jeffrey R. Origin of publication: China 2011-08-17 html http://www.bioline.org.br/abstract?id=zr11019 cn chi Kunming Institute of Zoology, Chinese Academy of Sciences http://www.zoores.ac.cn/; http://www.bioline.org.br/zr http://www.bioline.org.br/abstract?id=zr11019 Copyright 2011 Kunming Institute of Zoology, the Chinese Academy of Sciences Zoological Research (ISSN: 2095-8137) Vol 32 Num 2 Calidris mauri Space use Reproduction Despotic distribution; Material resources hypothesis AA 2011 ftbiolineint 2015-11-02T21:32:14Z We report that Western Sandpipers ( Calidris mauri ) on Alaska's Yukon-Kuskokwim River Delta exhibited aggregated breeding behavior at a relatively small spatial scale. Prior to clutch initiation, males performing song flight displays on a 36 ha plot were aggregated as were subsequent initial nesting attempts on the plot. We tested three hypotheses commonly invoked to explain aggregated breeding in territorial species (social mate choice, predation, and material resources hypotheses), and found support for the material resources hypothesis, as dispersed individuals were more often associated with tundra habitat patches, and aggregated individuals nested more often in undulating-tundra habitat patches compared to patch availability. The pattern of habitat occupancy conformed to an ideal despotic distribution with aggregated nesting birds in undulating-tundra patches experiencing lower reproductive success. On our study plot, older, more aggressive males solicited females more often, and defended larger, more dispersed sites in tundra habitat patches, compared to younger, less aggressive males that were aggregated in undulating-tundra habitat patches. Breeding aggregations are often concentrated on or near a critical resource. In contrast, Western Sandpiper breeding aggregations occur when dominant and/or older individuals exclude younger, subordinate individuals from preferred habitat. Although many taxa of non-colonial birds have been reported to aggregate breeding territories, this is the first quantitative report of aggregated breeding behavior in a non-colonial monogamous shorebird species prior to hatch. Other/Unknown Material Kuskokwim Tundra Yukon Bioline International (Reference Center on Environmental Information, Brazil) Yukon |
institution |
Open Polar |
collection |
Bioline International (Reference Center on Environmental Information, Brazil) |
op_collection_id |
ftbiolineint |
language |
Chinese |
topic |
Calidris mauri Space use Reproduction Despotic distribution; Material resources hypothesis |
spellingShingle |
Calidris mauri Space use Reproduction Despotic distribution; Material resources hypothesis Johnson, Matthew Walters, Jeffrey R. Proximate and ultimate factors that promote aggregated breeding in the Western Sandpiper |
topic_facet |
Calidris mauri Space use Reproduction Despotic distribution; Material resources hypothesis |
description |
We report that Western Sandpipers ( Calidris mauri ) on Alaska's Yukon-Kuskokwim River Delta exhibited aggregated breeding behavior at a relatively small spatial scale. Prior to clutch initiation, males performing song flight displays on a 36 ha plot were aggregated as were subsequent initial nesting attempts on the plot. We tested three hypotheses commonly invoked to explain aggregated breeding in territorial species (social mate choice, predation, and material resources hypotheses), and found support for the material resources hypothesis, as dispersed individuals were more often associated with tundra habitat patches, and aggregated individuals nested more often in undulating-tundra habitat patches compared to patch availability. The pattern of habitat occupancy conformed to an ideal despotic distribution with aggregated nesting birds in undulating-tundra patches experiencing lower reproductive success. On our study plot, older, more aggressive males solicited females more often, and defended larger, more dispersed sites in tundra habitat patches, compared to younger, less aggressive males that were aggregated in undulating-tundra habitat patches. Breeding aggregations are often concentrated on or near a critical resource. In contrast, Western Sandpiper breeding aggregations occur when dominant and/or older individuals exclude younger, subordinate individuals from preferred habitat. Although many taxa of non-colonial birds have been reported to aggregate breeding territories, this is the first quantitative report of aggregated breeding behavior in a non-colonial monogamous shorebird species prior to hatch. |
format |
Other/Unknown Material |
author |
Johnson, Matthew Walters, Jeffrey R. |
author_facet |
Johnson, Matthew Walters, Jeffrey R. |
author_sort |
Johnson, Matthew |
title |
Proximate and ultimate factors that promote aggregated breeding in the Western Sandpiper |
title_short |
Proximate and ultimate factors that promote aggregated breeding in the Western Sandpiper |
title_full |
Proximate and ultimate factors that promote aggregated breeding in the Western Sandpiper |
title_fullStr |
Proximate and ultimate factors that promote aggregated breeding in the Western Sandpiper |
title_full_unstemmed |
Proximate and ultimate factors that promote aggregated breeding in the Western Sandpiper |
title_sort |
proximate and ultimate factors that promote aggregated breeding in the western sandpiper |
publisher |
Kunming Institute of Zoology, Chinese Academy of Sciences |
publishDate |
2011 |
url |
http://www.bioline.org.br/abstract?id=zr11019 |
op_coverage |
Origin of publication: China |
geographic |
Yukon |
geographic_facet |
Yukon |
genre |
Kuskokwim Tundra Yukon |
genre_facet |
Kuskokwim Tundra Yukon |
op_source |
Zoological Research (ISSN: 2095-8137) Vol 32 Num 2 |
op_relation |
http://www.zoores.ac.cn/; http://www.bioline.org.br/zr http://www.bioline.org.br/abstract?id=zr11019 |
op_rights |
Copyright 2011 Kunming Institute of Zoology, the Chinese Academy of Sciences |
_version_ |
1766060359692582912 |