Showiness of Neotropical birds in relation to ectoparasite abundance and foraging stratum

B. A. Walther, D. H. Clayton, R. D. Gregory

研究成果: 雜誌貢獻文章

12 引文 (Scopus)

摘要

The evolution of bird coloration has inspired many hypotheses. We report the results of comparative tests involving the interacting effects of microhabitat use, sexual selection and parasite transmission on colour evolution. We used a data set of chewing lice (Insecta: Phthiraptera) sampled from 122 Neotropical bird species to test Hamilton and Zuk's prediction that species subjected to high parasite 'pressure' evolve showy traits that enhance the ability of females to choose parasite free mates. We found no significant relationship between mean parasite abundance and showiness among the 122 species. However, for the 66 non-passerine species in the data set, we found a significant negative relationship between parasite abundance and showiness, contrary to the Hamilton and Zuk prediction. These results are discussed in light of recent work on parasite-mediated sexual selection. We also tested for a relationship between showiness and the microhabitat use of different species of rainforest birds. Like other authors, we found a significant positive relationship between showiness and foraging stratum among the 113 species analysed. While drab species occur in all forest strata, showy species occur mostly in the midstorey and canopy. We discuss variables which may influence the evolution of such a pattern among forest birds.

原文英語
頁(從 - 到)157-165
頁數9
期刊Oikos
87
發行號1
出版狀態已發佈 - 十月 1999
對外發佈Yes

指紋

ectoparasite
ectoparasites
foraging
bird
parasites
parasite
birds
sexual selection
microhabitats
microhabitat
Mallophaga
Psocodea
parasite transmission
prediction
color
louse
Insecta
rain forests
rainforest
testing

ASJC Scopus subject areas

  • Ecology

引用此文

Walther, B. A., Clayton, D. H., & Gregory, R. D. (1999). Showiness of Neotropical birds in relation to ectoparasite abundance and foraging stratum. Oikos, 87(1), 157-165.

Showiness of Neotropical birds in relation to ectoparasite abundance and foraging stratum. / Walther, B. A.; Clayton, D. H.; Gregory, R. D.

於: Oikos, 卷 87, 編號 1, 10.1999, p. 157-165.

研究成果: 雜誌貢獻文章

Walther, BA, Clayton, DH & Gregory, RD 1999, 'Showiness of Neotropical birds in relation to ectoparasite abundance and foraging stratum', Oikos, 卷 87, 編號 1, 頁 157-165.
Walther BA, Clayton DH, Gregory RD. Showiness of Neotropical birds in relation to ectoparasite abundance and foraging stratum. Oikos. 1999 10月;87(1):157-165.
Walther, B. A. ; Clayton, D. H. ; Gregory, R. D. / Showiness of Neotropical birds in relation to ectoparasite abundance and foraging stratum. 於: Oikos. 1999 ; 卷 87, 編號 1. 頁 157-165.
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