Predation rates of mixed instar Odonata naiads feeding on Aedes aegypti and Armigeres moultoni (Diptera: Culicidae) larvae

Weterings, Robbie; Umponstira, Chanin; Buckley, Hannah L.

doi:10.1016/j.aspen.2014.10.008

Cited by 14 publications

(18 citation statements)

References 26 publications

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“…This difference in relative density of prey may account for the different results obtained between our study and that of Weterings et al. (). Additional studies in various predator prey systems are warranted to determine the generality of our results.…”

Section: Discussioncontrasting

confidence: 86%

“…In our experiment, predators, even at the highest density (i.e., four predators per tank) only consumed about 50% of available prey. This difference in relative density of prey may account for the different results obtained between our study and that of Weterings et al (2015). Additional studies in various predator prey systems are warranted to determine the generality of our results.…”

Section: Discussionmentioning

confidence: 56%

“…However, these results may have occurred because of limited prey numbers relative to the number of predators. In most replicates where predators were at the highest density (i.e., five predators per container), predators consumed 70%–100% of prey (Weterings et al., , figure 4C). Naturally, as prey are depleted total number of prey consumed will plateau.…”

Section: Discussionmentioning

confidence: 99%

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No evidence of nonlinear effects of predator density, refuge availability, or body size of prey on prey mortality rates

Simkins

Belk

2017

Ecology and Evolution

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Predator density, refuge availability, and body size of prey can all affect the mortality rate of prey. We assume that more predators will lead to an increase in prey mortality rate, but behavioral interactions between predators and prey, and availability of refuge, may lead to nonlinear effects of increased number of predators on prey mortality rates. We tested for nonlinear effects in prey mortality rates in a mesocosm experiment with different size classes of western mosquitofish (Gambusia affinis) as the prey, different numbers of green sunfish (Lepomis cyanellus) as the predators, and different levels of refuge. Predator number and size class of prey, but not refuge availability, had significant effects on the mortality rate of prey. Change in mortality rate of prey was linear and equal across the range of predator numbers. Each new predator increased the mortality rate by about 10% overall, and mortality rates were higher for smaller size classes. Predator–prey interactions at the individual level may not scale up to create nonlinearity in prey mortality rates with increasing predator density at the population level.

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Section: Discussioncontrasting

confidence: 86%

Section: Discussionmentioning

confidence: 56%

Section: Discussionmentioning

confidence: 99%

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No evidence of nonlinear effects of predator density, refuge availability, or body size of prey on prey mortality rates

Simkins

Belk

2017

Ecology and Evolution

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“…In contrast, applications of other common biocontrol measures such as Bacillus thuringiensis var. israelensis, Toxorhynchites, or odonates generally require two or more seasonal applications to be effective [43,[109][110][111].…”

Section: Discussionmentioning

confidence: 99%

“…aegypti from 40 nonurban communities [38,39]. Overall however, successful applications of odonates and copepods are limited in number in part because of the difficulty in maintaining large stocks capable of supporting repeated releases in order to sustain biological control [3,38,[40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Biological control of Aedes mosquito larvae with carnivorous aquatic plant, Utricularia macrorhiza

et al. 2020

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Background: Biological controls with predators of larval mosquito vectors have historically focused almost exclusively on insectivorous animals, with few studies examining predatory plants as potential larvacidal agents. In this study, we experimentally evaluate a generalist plant predator of North America, Utricularia macrorhiza, the common bladderwort, and evaluate its larvacidal efficiency for the mosquito vectors Aedes aegypti and Aedes albopictus in no-choice, laboratory experiments. We sought to determine first, whether U. macrorhiza is a competent predator of container-breeding mosquitoes, and secondly, its predation efficiency for early and late instar larvae of each mosquito species. Methods: Newly hatched, first-instar Ae. albopictus and Ae. aegypti larvae were separately exposed in cohorts of 10 to field-collected U. macrorhiza cuttings. Data on development time and larval survival were collected on a daily basis to ascertain the effectiveness of U. macrorhiza as a larval predator. Survival models were used to assess differences in larval survival between cohorts that were exposed to U. macrorhiza and those that were not. A permutation analysis was used to investigate whether storing U. macrorhiza in laboratory conditions for extended periods of time (1 month vs 6 months) affected its predation efficiency. Results: Our results indicated a 100% and 95% reduction of survival of Ae. aegypti and Ae. albopictus larvae, respectively, in the presence of U. macrorhiza relative to controls within five days, with peak larvacidal efficiency in plant cuttings from ponds collected in August. Utricularia macrorhiza cuttings, which were prey-deprived, and maintained in laboratory conditions for 6 months were more effective larval predators than cuttings, which were maintained prey-free for 1 month. Conclusions: Due to the combination of high predation efficiency and the unique biological feature of facultative predation, we suggest that U. macrorhiza warrants further development as a method for larval mosquito control.

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Necrophagous flies (Diptera: Calliphoridae and Sarcophagidae) as indicators of the conservation or anthropization of environments in eastern Amazonia, Brazil

et al. 2021

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Predation rates of mixed instar Odonata naiads feeding on Aedes aegypti and Armigeres moultoni (Diptera: Culicidae) larvae

Cited by 14 publications

References 26 publications

No evidence of nonlinear effects of predator density, refuge availability, or body size of prey on prey mortality rates

No evidence of nonlinear effects of predator density, refuge availability, or body size of prey on prey mortality rates

Biological control of Aedes mosquito larvae with carnivorous aquatic plant, Utricularia macrorhiza

Necrophagous flies (Diptera: Calliphoridae and Sarcophagidae) as indicators of the conservation or anthropization of environments in eastern Amazonia, Brazil

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