Experimental evidence for predation risk sensitive oviposition by a mosquito, Culiseta longiareolata
Article first published online: 25 DEC 2001
Volume 24, Issue 2, pages 202–207, May 1999
How to Cite
Stav, Gil., Blaustein, Leon. and Margalith, Joel. (1999), Experimental evidence for predation risk sensitive oviposition by a mosquito, Culiseta longiareolata. Ecological Entomology, 24: 202–207. doi: 10.1046/j.1365-2311.1999.00183.x
- Issue published online: 25 DEC 2001
- Article first published online: 25 DEC 2001
- Anax imperator;
- Culiseta longiareolata;
- habitat selection;
- predation risk
1. Females should choose to oviposit in habitats where risk of predation and competition are low. The ovipositional responses of a mosquito, Culiseta longiareolata, to a predator and to species sharing the same trophic level as this mosquito (controphic species) were assessed experimentally in outdoor artificial pools.
2. The predator, larval Anax imperator, which strongly reduced larval C. longiareolata survival, resulted in a 52% reduction of C. longiareolata egg rafts. The controphic species (primarily Daphnia magna), which had a small but statistically significant negative effect on the survival of C. longiareolata larvae, did not have a statistically significant influence on the number of egg rafts.
3. Laboratory trials indicated that only a small fraction of the reduced number of egg rafts seen in predator pools may be due to consumption of the egg rafts by A. imperator.
4. The experimental evidence indicates that the reduced number of C. longiareolata egg rafts found in the presence of A. imperator is due largely to oviposition habitat selection, i.e. C. longiareolata females choose pools with low risk of predation for their offspring.