Larval density dependence in Anopheles gambiae s.s., the major African vector of malaria
Article first published online: 16 NOV 2012
© 2012 The Authors. Journal of Animal Ecology © 2012 British Ecological Society
Journal of Animal Ecology
Volume 82, Issue 1, pages 166–174, January 2013
How to Cite
Muriu, S. M., Coulson, T., Mbogo, C. M., Godfray, H. C. J. (2013), Larval density dependence in Anopheles gambiae s.s., the major African vector of malaria. Journal of Animal Ecology, 82: 166–174. doi: 10.1111/1365-2656.12002
- Issue published online: 17 JAN 2013
- Article first published online: 16 NOV 2012
- Manuscript Accepted: 4 SEP 2012
- Manuscript Received: 4 MAR 2012
- Anopheles gambiae ;
- density dependence;
- field experiment;
- Anopheles gambiae sensu stricto is the most important vector of malaria in Africa although relatively little is known about the density-dependent processes determining its population size.
- Mosquito larval density was manipulated under semi-natural conditions using artificial larval breeding sites placed in the field in coastal Kenya; two experiments were conducted: one manipulating the density of a single cohort of larvae across a range of densities and the other employing fewer densities but with the treatments crossed with four treatments manipulating predator access.
- In the first experiment, larval survival, development rate and the size of the adult mosquito all decreased with larval density (controlling for block effects between 23% and 31% of the variance in the data could be explained by density).
- In the second experiment, the effects of predator manipulation were not significant, but again we observed strong density dependence in larval survival (explaining 30% of the variance).
- The results are compared with laboratory studies of A. gambiae larval competition and the few other studies conducted in the field, and the consequences for malaria control are discussed