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A preference for a sexual signal keeps females safe

Title
A preference for a sexual signal keeps females safe
Authors
Kim T.W.Christy J.H.Choe J.C.
Ewha Authors
최재천
SCOPUS Author ID
최재천scopus
Issue Date
2007
Journal Title
PLoS ONE
ISSN
1932-6203JCR Link
Citation
vol. 2, no. 5
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Predation is generally thought to constrain sexual selection by female choice and limit the evolution of conspicuous sexual signals. Under high predation risk, females usually become less choosy, because they reduce their exposure to their predators by reducing the extent of their mate searching. However, predation need not weaken sexual selection if, under high predation risk, females exhibit stronger preferences for males that use conspicuous signals that help females avoid their predators. We tested this prediction in the fiddler crab Uca terpsichores by increasing females' perceived predation risk from crab-eating birds and measuring the attractiveness of a courtship signal that females use to find mates. The sexual signal is an arching mound of sand that males build at the openings of their burrows to which they attract females for mating. We found that the greater the risk, the more attractive were males with those structures. The benefits of mate preferences for sexual signals are usually thought to be linked to males' reproductive contributions to females or their young. Our study provides the first evidence that a female preference for a sexual signal can yield direct survival benefits by keeping females safe as they search for mates. © 2007 Kim et al.
DOI
10.1371/journal.pone.0000422
Appears in Collections:
자연과학대학 > 생명과학전공 > Journal papers
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