Implications of guppy (Poecilia reticulata ) life-history phenotype for mosquito control

Ecology and Evolution
Misha L WarbanskiRana W El-Sabaawi

Abstract

Guppies (Poecilia reticulata) are frequently introduced to both natural and artificial water bodies as a mosquito control. Laboratory studies have demonstrated that guppies can consume large numbers of larval mosquitoes. Our study investigates how intraspecific variability in guppy phenotype affects their importance as a mosquito biocontrol and how habitat conditions (natural ponds vs. water storage containers) may influence insect biomass and guppy feeding. Using a blocked experimental design, we established stream-side mesocosm ponds with half receiving gravel substrate to simulate pond-bottom habitat. To provide realistic diet choices and insect abundances, we allowed the mesocosms to colonize naturally with aquatic insect larvae for 1 month before introducing guppies. We tested two distinct guppy phenotypes (from high- and low-predation streams) alongside fish-free controls. After 1 month, we measured insect biomass in the mesocosms and examined guppy gut contents to document direct predation. While overall insect biomass was not significantly different across the three fish treatments, we observed a significant reduction in mosquito biomass in fish treatments compared to fish-free controls, as well as intraspecific differe...Continue Reading

References

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Apr 14, 2016·The New England Journal of Medicine·Sonja A RasmussenLyle R Petersen

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Citations

Dec 12, 2017·The Cochrane Database of Systematic Reviews·Deirdre P WalsheThomas R Burkot
Aug 10, 2017·Frontiers in Cellular and Infection Microbiology·Irfan A RatherYong-Ha Park

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