Present address: Department of Biology, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand.
Social parasitism by workers in queenless and queenright Apis cerana colonies
Article first published online: 23 JAN 2007
Volume 16, Issue 5, pages 1107–1114, March 2007
How to Cite
NANORK, P., CHAPMAN, N. C., WONGSIRI, S., LIM, J., GLOAG, R. S. and OLDROYD, B. P. (2007), Social parasitism by workers in queenless and queenright Apis cerana colonies. Molecular Ecology, 16: 1107–1114. doi: 10.1111/j.1365-294X.2006.03207.x
- Issue published online: 23 JAN 2007
- Article first published online: 23 JAN 2007
- Received 3 July 2006; revision received 23 September 2006; accepted 23 October 2006
- Apis cerana;
- brood parasitism;
- egg dumping;
- social insects;
- worker policing
We examined worker reproduction in queenless and queenright Apis cerana colonies to determine if they are parasitized by workers from other nests. The results demonstrate that 2–6% of workers in queenright colonies are from another nest (non-natal), but these workers are not statistically more likely to have activated ovaries than natal workers, and are therefore unlikely to be active parasites. However, in queenless colonies we found a significant difference between the proportion of non-natal (72.7%) and natal (36.3%) workers with activated ovaries. Non-natal workers also had significantly higher reproductive success than natal workers: 1.8% of workers were non-natal, but these laid 5.2% of the eggs and produced 5.5% of the pupae. Unlike A. florea, the proportion of non-natal workers does not increase in queenless nests.