期刊
ECOLOGICAL ENTOMOLOGY
卷 46, 期 5, 页码 1148-1156出版社
WILEY
DOI: 10.1111/een.13059
关键词
Aquatic insects; geographic variation; habitat selection; oviposition; predator-prey; preference-performance
类别
资金
- Henry L. and Grace Doherty Foundation
- University of Mississippi Field Station
- University of Mississippi
Our study reveals the first documented case of geographic variation in oviposition response of a prey species to a predator species. In Missouri, Culex restuans showed reduced oviposition in the presence of Notonecta irrorata, while in Mississippi, C. restuans did not respond to various factors related to N. irrorata.
1. Predators have effects on prey populations through both consumptive and non-consumptive effects. Predator's presence is expected to drive variation in prey oviposition habitat selection behaviour, but differences in biotic and abiotic characteristics of habitats, or trait variation, may produce geographic variation in species interactions. 2. We conducted a series of experiments in two geographic locations, Mississippi and Missouri, USA, to assess oviposition responses of Culex mosquitoes (prey) to the presence of Notonecta irrorata (predator). We first tested whether mosquitoes in each location respond to the presence of N. irrorata, with follow-up experiments to determine whether mosquitoes respond to variation in N. irrorata density, whether N. irrorata from each location generate different responses by the same Culex population, and whether diet and consumption of conspecifics affect oviposition. 3. We found that Culex restuans in Missouri had reduced oviposition when N. irrorata were present. In Mississippi, C. restuans did not respond to the presence of N. irrorata from either Mississippi or Missouri, to the variation in density of N. irrorata, or to N. irrorata that had been fed larval mosquitoes. 4. Our study documents the first instance of geographic variation in oviposition response of a prey species to a predator species.
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