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Synchronous polyandry and multiple paternity in the frogCrinia georgiana(Anura: Myobatrachidae)

Roberts, J.D., Standish, R.J.ORCID: 0000-0001-8118-1904, Byrne, P.G. and Doughty, P. (1999) Synchronous polyandry and multiple paternity in the frogCrinia georgiana(Anura: Myobatrachidae). Animal Behaviour, 57 (3). pp. 721-726.

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Multiple paternity has rarely been reported in anuran amphibians, with only three previous documented examples. For the Australian frogCrinia georgiana, we observed synchronous polyandry in an average of 44% of matings observed at four field sites. This suggests matings involving more than one male are common in this species. One to eight males were observed in amplectant groups with second males amplexed ventrally. Genetic analyses, using allozyme electrophoresis, of offspring from two matings indicated that at least two of three possible males fathered offspring. Third males were unlikely to have shared paternity, explained by their inappropriate position during amplexus. Multiple paternity may be more common in frogs than has been reported.

Item Type: Journal Article
Publisher: Academic Press
Copyright: © 1999 The Association for the Study of Animal Behaviour.
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