The community ecology of Aedes egg hatching: implications for a mosquito invasion
Article first published online: 14 MAR 2008
Volume 18, Issue 2, pages 123–128, May 1993
How to Cite
EDGERLY, J. S., WILLEY, M. S. and LIVDAHL, T. P. (1993), The community ecology of Aedes egg hatching: implications for a mosquito invasion. Ecological Entomology, 18: 123–128. doi: 10.1111/j.1365-2311.1993.tb01193.x
- Issue published online: 14 MAR 2008
- Article first published online: 14 MAR 2008
- Accepted 26 January 1993
- Aedes aegypti;
- Aedes albopictus;
- Aedes triseriatus;
- biological invasion;
- egg hatch inhibition;
- interspecific competition;
- treehole communities
Abstract. 1. A recently introduced treehole mosquito from Asia, Aedes albopictus, is spreading throughout eastern North America, especially in tyre-refuse piles. Previous studies have identified inhibitory effects of larvae on egg hatch as a potential population regulatory mechanism within Aedes. Larva-egg interactions may also occur between species. This experiment assesses the ability of larvae of A. albopictus and two possible competitors in North America, A.triseriatus and A.aegypti, to suppress hatching of conspecific and congeneric eggs.
2. We exposed eggs of each species to varying combinations of larval species and density for 24h and assessed subsequent hatch rates. Aedes albopictus eggs exhibited the lowest level of inhibition when exposed to high larval densities; moreover, at the lowest larval density they imposed the most intense interspecific hatch inhibition.
3. Discretionary hatching in response to larval density may influence community composition by promoting the spread of A.albopictus, perhaps even leading to its dominance within North American Aedes communities.