Nutrient Enrichment Affects Immature Mosquito Abundance and Species Composition in Field-Based Mesocosms in the Coastal Plain of Georgia

Young, Gina Botello; Golladay, Stephen W.; Covich, Alan P.; Blackmore, Mark S.

doi:10.1603/en13023

Cited by 15 publications

(9 citation statements)

References 44 publications

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“…albopictus larval densities increased with nitrite and nitrate concentration, and declined with dissolved solids, and Young et al . () found that Ae. albopictus larval numbers were greater in fertilized field mesocosms that had higher phosphate levels than in unfertilized field mesocosms; these findings suggest that both the P and N components of NPK fertilizer may be attractive to gravid female Ae.…”

Section: Discussionmentioning

confidence: 98%

Field evaluation of the response ofAedes albopictus(Stegomyia albopicta) to three oviposition attractants and different ovitrap placements using black and clear autocidal ovitraps in a rural area of Same,Timor‐Leste

Anderson

Davis

2014

Medical Vet Entomology

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Known oviposition attractants or stimulants were compared, singly and in combination, using inexpensive autocidal ovitraps designed to trap emerging adults, in a rural area of Timor-Leste during the dry season. In this area, the dengue vector Aedes albopictus (Stegomyia albopicta) Skuse (Diptera: Culicidae) was abundant, but Aedes aegypti (Stegomyia aegypti) L. was not detected. The attractants were: (a) a compound found in Aedes eggs (dodecanoic acid); (b) components of nitrogen, phosphorous and potassium-based (NPK) fertilizer, and (c) infusions of discarded cigarette butts. A solution of ammonium phosphate and potassium nitrate was significantly more attractive to gravid Ae. albopictus than water only. Dodecanoic acid and cigarette butt infusions were not significantly more attractive than the control; however, they attracted various other Diptera and many non-culicid larvae developed in ovitraps in which these substances were used; thus, the presence of eggs or larvae of other species may have deterred Aedes oviposition. Significantly more Aedes eggs were found in ovitraps under vegetation than in ovitraps placed inside houses or against external walls. Clear-sided ovitraps in which black mesh was placed over a black ring floating on the water surface collected significantly fewer eggs than black ovitraps with identically placed mesh and rings.

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Section: Discussionmentioning

confidence: 98%

Field evaluation of the response ofAedes albopictus(Stegomyia albopicta) to three oviposition attractants and different ovitrap placements using black and clear autocidal ovitraps in a rural area of Same,Timor‐Leste

Anderson

Davis

2014

Medical Vet Entomology

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“…Previous studies in the Gulf Coastal Plain have shown differences in mosquito community composition between agricultural and forested wetlands (Botello et al ), and nutrient‐enriched containers showed greater oviposition preference by larval mosquitoes (Young et al ). Therefore, we were interested in determining which food resources are available and assimilated by larval mosquitoes in agricultural wetlands.…”

Section: Introductionmentioning

confidence: 94%

Stable isotope analysis of larval mosquito diets in agricultural wetlands in the coastal plain of Georgia, U.S.A.

Young

Golladay

Covich

et al. 2014

Journal of Vector Ecology

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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 δ 15 N 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. Journal of Vector Ecology 39 (2): 288-297. 2014.

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“…Additionally, nutrient subsidies leading to increased food resources (e.g. phytoplankton) in aquatic systems can enhance the recruitment of Culex restuans (Reiskind and Wilson 2004, Young et al 2014. If both increased salinity and nutrient enrichment increase mosquito recruitment through survival and emergence, then we would expect that road salts combined with organic additives would increase recruitment more than salt alone.…”

Section: Introductionmentioning

confidence: 99%

Road salt and organic additives affect mosquito growth and survival: an emerging problem in wetlands

Schuler

Relyea

2018

Oikos

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The global increase in the application rate of road salts such as sodium chloride (NaCl) has led to concern about their negative effects on roadside habitats and freshwater ecosystems. To reduce the application rate of NaCl and minimize the ecological effects of road salts, transportation agencies are continuously seeking alternative salts such as magnesium chloride (MgCl2) and organic additives such as beet juice and distillation byproducts. Yet, there is remarkably little information about how these road salt alternatives and additives affect aquatic communities, including their effects on mosquito populations. Nonetheless, understanding how anthropogenic factors such as road salts and salt additives affect mosquito populations could help minimize threats to human health, especially in urban environments. We used outdoor, freshwater mesocosms to experimentally investigate how the road salt MgCl2 and two organic additives affect mosquito Culex restuans survival and emergence. Additionally, we measured changes to abiotic aspects of the environment that could affect mosquito larvae during development. We found that increased concentrations of MgCl2 reduced mosquito survival while organic additives increased food resources that, in turn, reduced the average time to emergence for mosquitoes. Additionally, the organic additives reduced dissolved oxygen (DO) to hypoxic levels, which might negatively affect mosquito predators such as fish. In the absence of toxic concentrations of MgCl2 or other salts, reduced predation coupled with the faster emergence times, means that organic additives, might increase mosquito population size. More comprehensive studies of multi‐trophic interactions in freshwater ecosystems should be conducted before agencies promote the application of alternative road salts and road salt additives.

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Nutrient Enrichment Affects Immature Mosquito Abundance and Species Composition in Field-Based Mesocosms in the Coastal Plain of Georgia

Cited by 15 publications

References 44 publications

Field evaluation of the response ofAedes albopictus(Stegomyia albopicta) to three oviposition attractants and different ovitrap placements using black and clear autocidal ovitraps in a rural area of Same,Timor‐Leste

Field evaluation of the response ofAedes albopictus(Stegomyia albopicta) to three oviposition attractants and different ovitrap placements using black and clear autocidal ovitraps in a rural area of Same,Timor‐Leste

Stable isotope analysis of larval mosquito diets in agricultural wetlands in the coastal plain of Georgia, U.S.A.

Road salt and organic additives affect mosquito growth and survival: an emerging problem in wetlands

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