Aedes aegypti survival in the presence of Toxorhynchites violaceus (Diptera: Culicidae) fourth instar larvae

Albeny, Daniel Simões; Martins, Gustavo Ferreira; Andrade, Mateus Rezende; Krüger, Rodrigo Ferreira; Vilela, Evaldo F.

doi:10.1590/s1984-46702011000400017

Cited by 11 publications

(7 citation statements)

References 4 publications

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“…Biological control tools that act against the immature stages include the application of Bacillus thuringiensis in larvae habitats; products that prevent oviposition and/or inhibit growth and reproduction, including pheromones. There are also natural predators such as fish (especially of the genus Gambusia and Poecilia, family Poeciliidae) [19,20], copepods (including several species of the genus Mesocyclops) [21,22] and the "elephant mosquito" (genus Toxorhynchites) [23,24].…”

Section: Mosquito Controlmentioning

confidence: 99%

“…The methanolic extract was the most active for all activities, notably as a larvicidal (LC 50 10.69 µg/mL). Other extracts also demonstrated high activity against larvae: benzene (LC 50 18.27 µg/mL) and acetone (LC 50 23.95 µg/mL). The non-hatching concentration for eggs ranged from 120 to 160 mg/L and the repellent action (100% at 5 mg/cm 2 ) ranged from 6.0 to 4.3 h [86].…”

Section: Organic/aqueous Extractsmentioning

confidence: 99%

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Plant Natural Products for the Control of Aedes aegypti: The Main Vector of Important Arboviruses

et al. 2020

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The mosquito species Aedes aegypti is one of the main vectors of arboviruses, including dengue, Zika and chikungunya. Considering the deficiency or absence of vaccines to prevent these diseases, vector control remains an important strategy. The use of plant natural product-based insecticides constitutes an alternative to chemical insecticides as they are degraded more easily and are less harmful to the environment, not to mention their lower toxicity to non-target insects. This review details plant species and their secondary metabolites that have demonstrated insecticidal properties (ovicidal, larvicidal, pupicidal, adulticidal, repellent and ovipositional effects) against the mosquito, together with their mechanisms of action. In particular, essential oils and some of their chemical constituents such as terpenoids and phenylpropanoids offer distinct advantages. Thiophenes, amides and alkaloids also possess high larvicidal and adulticidal activities, adding to the wealth of plant natural products with potential in vector control applications.

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Section: Mosquito Controlmentioning

confidence: 99%

Section: Organic/aqueous Extractsmentioning

confidence: 99%

Plant Natural Products for the Control of Aedes aegypti: The Main Vector of Important Arboviruses

et al. 2020

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“…aegypti and Ae. albopictus were reduced in numbers when Toxorhynchites was present in the same microcosm or ecosystem Tikasingh, 1992;Albeny et al, 2011;Nyamah et al, 2011). Although the predatory behaviour of Toxorhynchites indicates that it would feed on larvae of Ae.…”

Section: Predatormentioning

confidence: 99%

Why are Aedes mosquitoes rare colonisers of Nepenthes pitcher plants?

Chou

Wilson

Dykes

et al. 2015

Ecological Entomology

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1. Nepenthes pitcher plants produce fluid-containing animal traps that are colonised by a variety of specialised arthropods, especially dipterans. However, container-breeding vector mosquitoes, such as Aedes albopictus Skuse have rarely been recorded from pitchers. Increasing overlap in the geographical ranges of Nepenthes and Ae. albopictus in urban parts of Southeast Asia owing to urbanisation highlights a growing need to investigate the potential role of pitchers as larval habitats for vector mosquitoes.2. The ability of Ae. albopictus larvae to survive in three common lowland Nepenthes in Peninsular Malaysia that are most likely to co-occur with Ae. albopictus [viz., Nepenthes ampullaria Jack, Nepenthes gracilis Korth., and Nepenthes mirabilis (Lour.) Druce] was investigated.3. The larval survival rates of Ae. albopictus in pitcher fluids of the three Nepenthes species were determined, then the effects of low pH, larvicidal agents (such as microbes, predators, and chemical compounds) through manipulative experiments were investigated.4. It was found that pitchers represent a hostile environment to Ae. albopictus, but that the principal cause of larval mortality varies among Nepenthes species (i.e. low fluid pH in N. gracilis, predation by Toxorhynchites acaudatus Leicester larvae in N. ampullaria, and microbial activity in N. mirabilis). It was concluded that Nepenthes pitchers are generally not suitable larval habitats for Ae. albopictus. However, the pitcher environment of N. ampullaria is worthy of further study, as pitchers that lack predators are nevertheless rarely colonised by Ae. albopictus, indicating that other aspects of the host pitcher environment inhibit oviposition or larval survivorship.

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“…Entre alternativas de controle biológico que mostraram viabilidade técnica estão os peixes larvófagos (Pamplona et al, 2009), as bactérias (Lima et al, 2005) e os hormônios reguladores de crescimento (Martins & Silva, 2004). Dentre os organismos utilizados como agentes de controle biológico também se encontram larvas predadoras do gênero Toxorhynchites (Theobald) (Diptera: Culicidae) (Bonnet & Hu, 1951;Sempala, 1983;Collins & Blackwell, 2000;Schreiber, 2007, Albeny et al, 2011.…”

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“…aegypti tem se mostrado eficientes na redução da densidade larval do Ae. aegypti (Focks et al, 1982;Gerberg & Visser, 1978;Rawlins et al, 1991;Tikasingh, 1992, Albeny et al, 2011. Entretanto estes estudos não levam em consideração que variações no tamanho, forma e volume de recipientes podem afetar a taxa de predação (Sunahara et al 2002, Alto & Griswold, 2005.…”

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Variação da Predação de Larvas de Aedes aegypti por Larvas de Toxorhynchites violaceus (Diptera: Culicidae) de Acordo com Dimensões do Hábitat

et al. 2012

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Variation of Aedes aegypti Larvae Predation by Toxorhynchites violaceus Larvae (Diptera: Culicidae) According to Habitats Dimensions ABSTRACT -Non-biodegradable containers that accumulate water are commonly found in urban environment, and make ease the larval development of Aedes aegypti mosquito, which can make chemical control very difficult and less effective. Biological control is an alternative method, and the predators larvae of the genre Toxorhynchites (Diptera: Culicidae) are a model widely used. In this article we check the effect of habitat heterogeneity on Ae. aegypti larvae predation by larvae of Toxorhynchites violaceus. The predation model defines that the habitat heterogeneity has a significant effect on predation level. Larvae suffers a higher predation in containers with 1.8 centimeters in high of the water column than in containers with 4 and 13.4 centimeters high. In large containers, the predation of Ae. aegypti larvae by Tx. violaceus larvae may not be efficient. However, in containers that accumulate small water volume, as in the majority of the non-biodegradable containers, the model may be efficient.KEY WORDS -Toxorhynchites, containers, heterogeneity, Ae. aegypti.RESUMO -Recipientes não biodegradáveis que acumulam água espalham-se pelo ambiente urbano e favorece o desenvolvimento larval do mosquito Aedes aegypti, o que aliado a outras questões torna o controle químico larval difícil e/ou pouco efetivo. O controle biológico é um método alternativo e um modelo já utilizado são larvas predadoras do gênero Toxorhynchites (Diptera: Culicidae). O efeito da altura da coluna d'água e área da superfície utilizada para respiração sobre a predação de larvas de Ae. aegypti por larvas de Tx. violaceus foi avaliado. O modelo de predação obtido determina que a variação da altura da coluna d'água e área da superfície de respiração afeta significativamente a predação. Larvas de Ae. aegypti são mais predadas em recipientes com coluna de água de 1,8cm, do que em recipientes com colunas de 13,4 cm e 4,0 cm, a medida que se aumenta a superfície utilizada para respiração. Segundo o modelo obtido, em grandes recipientes, aqueles com grandes medidas para altura de coluna d'água e superfície de respiração, a predação de larvas de Ae. aegypti por larvas de Tx. violaceus pode não ser eficiente. Já em recipientes que acumulam pequeno volume de água como a maioria dos recipientes não biodegradáveis, o modelo sugere que a predação possa ser eficiente.

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Aedes aegypti survival in the presence of Toxorhynchites violaceus (Diptera: Culicidae) fourth instar larvae

Cited by 11 publications

References 4 publications

Plant Natural Products for the Control of Aedes aegypti: The Main Vector of Important Arboviruses

Plant Natural Products for the Control of Aedes aegypti: The Main Vector of Important Arboviruses

Why are Aedes mosquitoes rare colonisers of Nepenthes pitcher plants?

Variação da Predação de Larvas de Aedes aegypti por Larvas de Toxorhynchites violaceus (Diptera: Culicidae) de Acordo com Dimensões do Hábitat

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