High levels of extra-pair paternity in Superb Fairy-wrens in South Australia despite low frequency of auxiliary males
Diane Colombelli-Négrel A , Beth E. Schlotfeldt A and Sonia Kleindorfer A BA School of Biological Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia.
B Corresponding author. Email: sonia.kleindorfer@flinders.edu.au
Emu 109(4) 300-304 https://doi.org/10.1071/MU09035
Submitted: 5 May 2009 Accepted: 3 October 2009 Published: 24 November 2009
Abstract
The Superb Fairy-wren (Malurus cyaneus) is a model system in which to study cooperative breeding and extra-pair paternity. Previous studies in this species have shown that 61–76% of nestlings were extra-pair young and 92–95% of nests contained at least one extra-pair young. Furthermore, the probability of extra-pair paternity was higher when auxiliary males were present. We studied group size and extra-pair paternity in South Australia where, unlike other study sites, auxiliary males were relatively uncommon: 16% of nests had one auxiliary male compared to 37–80% with at least one auxiliary per nest in other studies. We predicted a lower incidence of extra-pair paternity, given the shortage of auxiliary males. Our results did not support this prediction: we found extra-pair paternity among 67% of nestlings and 83% of nests.
Acknowledgements
We thank the Australian Research Council, Department for Environment and Heritage (SA), Sir Mark Mitchell Research Foundation, Holsworth Foundation, and Nature Foundation of South Australia for financial support. The Flinders University Animal Welfare Committee (permit No. E190) and the Department for Environment and Heritage (SA) (permit No. Z24699 5) approved the research.
Arnqvist, G. , and Kirkpatrick, M. (2005). The evolution of infidelity in socially monogamous passerines: the strength of direct and indirect selection on extrapair copulation behavior in females. American Naturalist 165, S26–S37.
| Crossref | GoogleScholarGoogle Scholar | PubMed |
Birkhead, T. R. , and Møller, A. P. (1995). Extra-pair copulation and extra-pair paternity in birds. Animal Behaviour 49, 843–848.
Chan, K. , and Augusteyn, J. D. (2003). Relationship between bird-unit size and territory quality in three species of fairy-wrens (Malurus spp.). Ecological Research 18, 73–80.
| Crossref | GoogleScholarGoogle Scholar |
Colombelli-Négrel, D. , and Kleindorfer, S. (2008). In superb fairy wrens (Malurus cyaneus), nuptial males have more blood parasites and higher haemoglobin concentration than eclipsed males. Australian Journal of Zoology 56, 117–121.
| Crossref | GoogleScholarGoogle Scholar |
Dunn, P. O. , and Cockburn, A. (1999). Extra-pair mate choice and honest signalling in cooperatively-breeding superb fairy-wrens. Evolution 53, 938–946.
| Crossref | GoogleScholarGoogle Scholar |
Emlen, S. T. (1995). An evolutionary-theory of the family. Proceedings of the National Academy of Sciences of the United States of America 92, 8092–8099.
| Crossref | GoogleScholarGoogle Scholar | CAS | PubMed |
Komdeur, J. (1992). Importance of habitat saturation and territory quality for the evolution of cooperative breeding in the Seychelles Warbler. Nature 358, 493–495.
| Crossref | GoogleScholarGoogle Scholar |
Russell, A. F. , Langmore, N. E. , Cockburn, A. , Astheimer, L. B. , and Kilner, R. M. (2007). Reduced egg investment can conceal helper effects in cooperatively breeding birds. Science 317, 941–944.
| Crossref | GoogleScholarGoogle Scholar | CAS | PubMed |