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Sex-specific fitness correlates of dispersal in a house sparrow metapopulation
Article first published online: 6 AUG 2009
DOI: 10.1111/j.1365-2656.2009.01597.x
© 2009 The Authors. Journal compilation © 2009 British Ecological Society
Additional Information
How to Cite
Pärn, H., Jensen, H., Ringsby, T. H. and Sæther, B.-E. (2009), Sex-specific fitness correlates of dispersal in a house sparrow metapopulation. Journal of Animal Ecology, 78: 1216–1225. doi: 10.1111/j.1365-2656.2009.01597.x
Publication History
- Issue published online: 13 OCT 2009
- Article first published online: 6 AUG 2009
- Received 18 July 2008; accepted 25 June 2009 Handling Editor: Tim Benton
- Abstract
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Keywords:
- dispersal;
- house sparrow;
- life expectancy;
- lifetime reproductive success;
- mating success
Summary
1. Dispersal affects many important ecological and evolutionary processes. Still, little is known about the fitness of dispersing individuals.
2. Here, we use data from a long-term study of a house sparrow Passer domesticus metapopulation to compare lifetime reproductive success (LRS) of resident and immigrant individuals, all with known origin.
3. Lifetime production of recruits by immigrant males was much lower than for resident males, because of shorter life span and lower annual mating success. In contrast, lifetime production of recruits did not differ significantly between immigrant and resident females.
4. Over their lifetime, dispersers contributed fewer recruits to the local population than residents. This shows that immigrant house sparrows have different, sex specific, demographic effects on the population dynamics than residents.