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1 December 2014 Stable Isotope Analysis of Larval Mosquito Diets in Agricultural Wetlands in the Coastal Plain of Georgia, U.S.A.
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Abstract

Previous studies have used C and N isotope ratios to investigate the use of different food resources such as plant and animal detritus by container-breeding mosquitoes. This study is the first to report on the potential food resources assimilated by larval mosquitoes in agricultural and reference wetlands. Larval mosquitoes (Diptera: Culcidae) were sampled, along with their potential food resources, from agricultural and reference wetland habitats throughout a seasonal hydroperiod. IsoSource mixing model results indicated that food resources had greater δ15N isotope values in agricultural wetlands compared with cypress-gum swamps. In February, Aedes vexans (Meigen) and Culex territans Walker larvae fed primarily on lower quality food resources (coarse particulate organic matter and sediment) based on C:N. In contrast, higher quality food resources (fine particulate organic matter) were utilized by Anopheles spp. throughout the study and by Psorophora columbiae (Dyer and Knab) in May. This research contributes to a more comprehensive understanding of the food resources available and assimilated by larval mosquitoes in agricultural wetlands.

Gina Botello Young, Stephen Golladay, Alan Covich, and Mark Blackmore "Stable Isotope Analysis of Larval Mosquito Diets in Agricultural Wetlands in the Coastal Plain of Georgia, U.S.A.," Journal of Vector Ecology 39(2), 288-297, (1 December 2014). https://doi.org/10.1111/jvec.12103
Received: 29 January 2014; Accepted: 1 June 2014; Published: 1 December 2014
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