Scent may signal fighting ability in male Iberian rock lizards.

Scent may signal fighting ability in male Iberian rock lizards. Research Abstract Details 

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Scent may signal fighting ability in male Iberian rock lizards. Abstract Text:

,Pilar ,

Intrasexual competition favours the evolution of conspicuous fighting ability badges. However, in spite of the fact that chemoreception is important in sexual selection of many animals, such as lizards, the role of chemical signals in males' contests is relatively unknown. Here, we show that proportions of cholesterol in femoral gland secretions of male Iberian rock lizards were related to their body size (which confers a competitive advantage in fights). Males discriminated chemically and responded aggressively to cholesterol stimuli presented on swabs. Moreover, we experimentally increased cholesterol in the scent of males, and staged encounters in neutral cages between two unfamiliar and size-matched males. Focal males lost more agonisitic interactions against males manipulated with cholesterol than in control tests. We suggest that differences in scent composition may reliably signal fighting ability in many lizard species, which would help to avoid the costs of fighting.

Scent may signal fighting ability in male Iberian rock lizards. Publishing Authors By Initials

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Scent may signal fighting ability in male Iberian rock lizards. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Biology letters

VOLUME: 3

Page Numbers: 125-7

Journal Abbreviation: Biol. Lett.

ISSN: 1744-9561

DAY: 22

MONTH: Apr

YEAR: 2007

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LANGUAGE: eng

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AFFILIATION: Departamento de Ecología Evolutiva, Museo Nacional de Ciencias Naturales, CSIC, José Gutiérrez Abascal 2, 28006 Madrid, Spain. jose.martin@mncn.csic.es

Country: England

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MEDLINETA: Biol Lett

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