2024-03-29T05:27:00Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/212472019-02-28T10:20:14Zcom_10261_108com_10261_8col_10261_361
DIGITAL.CSIC
author
Olea, Pedro P.
author
Casas, Fabián
author
Redpath, Steve
author
Viñuela, Javier
funder
Ministerio de Educación y Ciencia (España)
funder
Junta de Comunidades de Castilla-La Mancha
2010-02-17T13:33:47Z
2010-02-17T13:33:47Z
2010-02-08
Behavioral Ecology and Sociobiology 64(6): 927-937 (2010)
0340-5443
http://hdl.handle.net/10261/21247
10.1007/s00265-010-0908-1
1432-0762
http://dx.doi.org/10.13039/501100011698
Visual displays are signals that may be selected to increase visibility. Light is a crucial component in the transmission of visual signals, and white colour is very conspicuous when illuminated by sun and exhibited against darker backgrounds. Here we tested the hypothesis that orientation of sexual displays in male great bustard (Otis tarda) depends upon position of the sun, i.e., males direct their uplifted white tails towards the sun in order to maximise signal detectability to distant females. We recorded the orientation of 405 male displays in relation to the sun and to females at seven leks. Great bustard males signalled towards the sun more often than expected by chance in early morning, although this pattern was not obvious at other times of day, when males displayed more towards females. Our hypothesis was further supported by the fact that displays were more directed towards the sun when the sun was most visible. Males were more likely to direct their displays towards females during the most elaborate components of their courtship display and when there were fewer males on the lek. Pointing white plumage to the sun may be a behaviour selected in species living in steppe-like open landscapes if individuals obtain net fitness benefit by increasing the likelihood of mating.
eng
closedAccess
Animal communication
Courtship
Otis tarda
White plumage
Bottoms up: great bustards use the sun to maximise signal efficacy
artículo
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URL
https://digital.csic.es/bitstream/10261/21247/3/accesoRestringido.pdf
File
MD5
a0650c7a88a09644814b2afd0cfc985f
15753
application/pdf
accesoRestringido.pdf