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High costs of female choice in a lekking Lizard.

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Vitousek, Maren N

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21 597.9542

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En: PLOS ONE Vol. 2, no. 6 (June 2007), p. 1-6Tema: Although the cost of mate choice is an essential component of the evolution and maintenance of sexual selection, the energetic cost of female choice has not previously been assessed directly. Here we report that females can incur high energetic costs as a result of discriminating among potential mates. We used heart rate biologging to quantify energetic expenditure in lek-mating female Galapagos marine iguanas (Amblyrhynchus cristatus). Receptive females spent 78.9623.2 kJ of energy on mate choice over a 30-day period, which is equivalent to , of one day’s energy budget. Females that spent more time on the territories of high-quality, high-activity males displayed greater energetic expenditure on mate choice, lost more mass, and showed a trend towards producing smaller follicles. Choosy females also appear to face a reduced probability of survival if El Niño conditions occur in the year following breeding. These findings indicate that female choice can carry significant costs, and suggest that the benefits that lek-mating females gain through mating with a preferred male may be higher than previously predicted.

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	Artículo	Corley Smith Library Artículos		Galápagos		597.9542 VIT (Navegar estantería(Abre debajo))					Disponible			2017-2206
	Documento electrónico	Corley Smith Library Colección PDF		Galápagos		597.9542 VIT 2007 (Navegar estantería(Abre debajo))					Disponible			2021-1873

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Previo	597.9542 STE Genetic impact of a severe El Niño event on Galapagos Marine iguanas ( Amblyrhynchus cristatus).	597.9542 TRA 2016 The Galápagos land iguana (Conolophus subcristatus) as a seed disperser.	597.9542 TRA 2016 The Galápagos land iguana (Conolophus subcristatus) as a seed disperser.	597.9542 VIT High costs of female choice in a lekking Lizard.	597.9542177 GLA Characterization of a Nonclassical Class I MHC Gene in a Reptile, the Galapagos Marine Iguana ( Amblyrhynchus cristatus).	597.9542177 MAC The conservation status of the galápagos marine iguanas, amblyrhynchus cristatus.	597.9542177 MAC 2015 Hybridization masks speciation in the evolutionary history of the Galápagos marine iguana.	Siguiente

Although the cost of mate choice is an essential component of the evolution and maintenance of sexual selection, the energetic cost of female choice has not previously been assessed directly. Here we report that females can incur high energetic costs as a result of discriminating among potential mates. We used heart rate biologging to quantify energetic expenditure in lek-mating female Galapagos marine iguanas (Amblyrhynchus cristatus). Receptive females spent 78.9623.2 kJ of energy on mate choice over a 30-day period, which is equivalent to , of one day’s energy budget. Females that spent more time on the territories of high-quality, high-activity males displayed greater energetic expenditure on mate choice, lost more mass, and showed a trend towards producing smaller follicles. Choosy females also appear to face a reduced probability of survival if El Niño conditions occur in the year following breeding. These findings indicate that female choice can carry significant costs, and suggest that the benefits that lek-mating females gain through mating with a preferred male may be higher than previously predicted.

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