Is sexual ornamentation an honest signal of male quality in the Chinese grouse (Tetrastes sewerzowi)?
We examined the variation in sexual ornamentation of male Chinese grouse (Tetrastes sewerzowi) in the Gansu Province, China, seeking to identify factors involved in whether ornament size and brightness are honest signals of male quality. Compared to unmated males, mated males had significantly large...
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| Veröffentlicht in: | PloS one 2013-12, Vol.8 (12), p.e82972-e82972 |
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| description | We examined the variation in sexual ornamentation of male Chinese grouse (Tetrastes sewerzowi) in the Gansu Province, China, seeking to identify factors involved in whether ornament size and brightness are honest signals of male quality. Compared to unmated males, mated males had significantly larger and redder combs and, although they did not have significantly larger territories, they defended them more vigorously. Mated males had significantly higher blood carotenoid and testosterone levels, significantly better body condition, and significantly lower parasite loads than unmated males. Our findings are thus consistent with the hypothesis that comb size and color are honest signals of better male quality in the grouse, mediated through lower parasite loads and/or higher testosterone levels. |
| doi_str_mv | 10.1371/journal.pone.0082972 |
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Compared to unmated males, mated males had significantly larger and redder combs and, although they did not have significantly larger territories, they defended them more vigorously. Mated males had significantly higher blood carotenoid and testosterone levels, significantly better body condition, and significantly lower parasite loads than unmated males. Our findings are thus consistent with the hypothesis that comb size and color are honest signals of better male quality in the grouse, mediated through lower parasite loads and/or higher testosterone levels.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0082972</identifier><identifier>PMID: 24386132</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Age Factors ; Aggressiveness ; Animal behavior ; Animal reproduction ; Animals ; Body Constitution ; Carotenoids ; China ; Color ; Comb and Wattles - anatomy & histology ; Conservation biology ; Cues ; Galliformes - parasitology ; Galliformes - physiology ; Hypotheses ; Laboratories ; Lagopus lagopus ; Male ; Males ; Parasites ; Quality ; Sex Characteristics ; Signal quality ; Territoriality ; Testosterone ; Testosterone - blood ; Tetrastes sewerzowi ; Zoology</subject><ispartof>PloS one, 2013-12, Vol.8 (12), p.e82972-e82972</ispartof><rights>2013 Yang et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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Compared to unmated males, mated males had significantly larger and redder combs and, although they did not have significantly larger territories, they defended them more vigorously. Mated males had significantly higher blood carotenoid and testosterone levels, significantly better body condition, and significantly lower parasite loads than unmated males. Our findings are thus consistent with the hypothesis that comb size and color are honest signals of better male quality in the grouse, mediated through lower parasite loads and/or higher testosterone levels.</description><subject>Age Factors</subject><subject>Aggressiveness</subject><subject>Animal behavior</subject><subject>Animal reproduction</subject><subject>Animals</subject><subject>Body Constitution</subject><subject>Carotenoids</subject><subject>China</subject><subject>Color</subject><subject>Comb and Wattles - anatomy & histology</subject><subject>Conservation biology</subject><subject>Cues</subject><subject>Galliformes - parasitology</subject><subject>Galliformes - physiology</subject><subject>Hypotheses</subject><subject>Laboratories</subject><subject>Lagopus lagopus</subject><subject>Male</subject><subject>Males</subject><subject>Parasites</subject><subject>Quality</subject><subject>Sex Characteristics</subject><subject>Signal quality</subject><subject>Territoriality</subject><subject>Testosterone</subject><subject>Testosterone - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yang, Chen</au><au>Wang, Jie</au><au>Fang, Yun</au><au>Sun, Yue-Hua</au><au>McGraw, Kevin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Is sexual ornamentation an honest signal of male quality in the Chinese grouse (Tetrastes sewerzowi)?</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2013-12-26</date><risdate>2013</risdate><volume>8</volume><issue>12</issue><spage>e82972</spage><epage>e82972</epage><pages>e82972-e82972</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>We examined the variation in sexual ornamentation of male Chinese grouse (Tetrastes sewerzowi) in the Gansu Province, China, seeking to identify factors involved in whether ornament size and brightness are honest signals of male quality. Compared to unmated males, mated males had significantly larger and redder combs and, although they did not have significantly larger territories, they defended them more vigorously. Mated males had significantly higher blood carotenoid and testosterone levels, significantly better body condition, and significantly lower parasite loads than unmated males. Our findings are thus consistent with the hypothesis that comb size and color are honest signals of better male quality in the grouse, mediated through lower parasite loads and/or higher testosterone levels.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>24386132</pmid><doi>10.1371/journal.pone.0082972</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Age Factors Aggressiveness Animal behavior Animal reproduction Animals Body Constitution Carotenoids China Color Comb and Wattles - anatomy & histology Conservation biology Cues Galliformes - parasitology Galliformes - physiology Hypotheses Laboratories Lagopus lagopus Male Males Parasites Quality Sex Characteristics Signal quality Territoriality Testosterone Testosterone - blood Tetrastes sewerzowi Zoology |
| title | Is sexual ornamentation an honest signal of male quality in the Chinese grouse (Tetrastes sewerzowi)? |
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