Trait-mediated effects of predation across life-history stages in container mosquitoes
Article first published online: 13 SEP 2011
© 2011 The Authors. Ecological Entomology © 2011 The Royal Entomological Society
Volume 36, Issue 5, pages 605–615, October 2011
How to Cite
COSTANZO, K. S., MUTURI, E. J. and ALTO, B. W. (2011), Trait-mediated effects of predation across life-history stages in container mosquitoes. Ecological Entomology, 36: 605–615. doi: 10.1111/j.1365-2311.2011.01302.x
- Issue published online: 13 SEP 2011
- Article first published online: 13 SEP 2011
- Accepted 30 June 2011
- chemical cues;
- life history traits;
1. It was determined if the predatory midge Corethrella appendiculata Grabham imposes a fitness cost in a native mosquito, Ochlerotatus triseriatus Say, and an invasive mosquito, Aedes albopictus Skuse. The hypothesis that decreased activity of immature prey in the presence of predator cues is associated with life history costs through all life cycle stages was tested.
2. In experiment 1, individual larvae of O. triseriatus or A. albopictus were raised in the presence or absence of predation cues at two resource levels. Prey were video recorded to detect behavioural responses and to measure development time, size at emergence, and adult longevity. In experiment 2, prey populations were reared in similar environments and the frequency of predator cue additions was varied.
3. Only O. triseriatus reduced its activity in the presence of predation cues. Predation cues were associated with longer immature development times and shorter adult life spans in O. triseriatus, whereas in A. albopictus, the cues were associated with a larger size of emerging adults.
4. In the present study, it was found that behavioural modifications during the larval stage can affect mosquitoes through multiple stages of their complex life cycle. The species-specific behavioural differences are probably attributable to the longer evolutionary history O. triseriatus has with predators, relative to the invasive A. albopictus.