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Phonotaxis by female Majorcan midwife toads, Alytes muletensis

Dyson, Miranda L.; Bush, Sarah L. and Halliday, Tim R. (1998). Phonotaxis by female Majorcan midwife toads, Alytes muletensis. Behaviour, 135(2) pp. 213–230.

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Female choice based on male call characteristics has been experimentally demonstrated in a number of species of anurans. In the Majorcan midwife toad, the male performs parental care by carrying the eggs in a string around his hind legs until they are ready to hatch. Both sexes produce calls to advertise sexual receptivity and both show phonotaxis towards the calls of the opposite sex. We used two-choice phonotaxis experiments to investigate whether females assess male caretaking ability using variation in call characteristics. Both call
frequency and call duration are good indicators of male size, a characteristic that potentially influences the ability of males to successfully brood a clutch. Variation in call repetition
rate and call intensity may also reflect differences in male caretaking ability, given the high energetic demands of calling behaviour in anurans. We predicted that females should prefer to mate with larger males and that this would be manifest in selective phonotaxis to
low frequency and/or long duration calls. We also predicted that they would prefer calls produced at a fast rate and a high intensity. Contrary to our predictions females did not prefer lower frequency calls, longer calls or louder calls. They did however, selectively approach calls produced at a faster rate. These results are discussed in the context of sexual selection theory.

Item Type: Journal Item
Copyright Holders: 1998 Koninklijke Brill NV, Leiden
ISSN: 0005-7959
Project Funding Details:
Funded Project NameProject IDFunding Body
GrantNot SetBiotechnology and Biological Sciences Research Council
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Life, Health and Chemical Sciences
Item ID: 44576
Depositing User: Miranda Dyson
Date Deposited: 08 Oct 2015 11:58
Last Modified: 07 May 2019 07:56
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