Female fowl (Gallus gallus) do not prefer alarm-calling males

Wilson, David R. and Evans, Christopher S. (2010) Female fowl (Gallus gallus) do not prefer alarm-calling males. Behaviour, 147 (4). pp. 525-552. ISSN 0005-7959

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Phenotypic traits associated with reproductive outcomes are often thought to be under sexual selection. In fowl, Gallus gallus, the rate at which males produce anti-predator alarm calls is an excellent correlate of their mating and reproductive success. However, two different models can explain this relationship. Calling, like many costly traits, may be attractive to females. Alternatively, males that have recently mated may invest in their mates by increasing alarm call production. Although previous work provides strong support for the male investment hypothesis, the two hypotheses are not mutually exclusive. In this study, we tested the mate attraction hypothesis by manipulating male alarm calling rates in three separate mate choice experiments. The first experiment was conducted in a highly controlled laboratory setting. There, we used video playback techniques to present females with simulated males that differed only in their alarm calling responses to simulated predators. In the second experiment, females were presented with two live males in a naturalistic outdoor setting. One male's vocal output was supplemented with his own pre-recorded alarm calls, and the other male's was not. In the third experiment, we combined the realistic spatial scale of an outdoor context with the stringent experimental control offered by video playback. The male stimuli used in this experiment differed in their propensity to produce four intercorrelated vocal signals that are each correlated with male mating and reproductive success. These included aerial alarm calls, ground alarm calls, food calls, and crows. Results from the three experiments consistently showed that females do not prefer alarm-calling males, suggesting that male alarm calling is not a sexually selected signal.

Item Type: Article
URI: http://research.library.mun.ca/id/eprint/9785
Item ID: 9785
Department(s): Humanities and Social Sciences, Faculty of > Psychology
Science, Faculty of > Psychology
Date: 2010
Date Type: Publication
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