Biology of Mosquitoes

Becker, Norbert; Petrić, Dušan; Zgomba, Marija; Boase, Clive; Madon, Minoo B.; Dahl, Christine; Kaiser, Achim

doi:10.1007/978-3-540-92874-4_2

Cited by 42 publications

(87 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Each life-stage was represented by an ordinary differential equation (the fifth to the eighth equation in Equation ( 6 )). The adults that are able to mate and feed (

and

) can oviposit and begin their life cycle [ 56 ]. Density-dependent mortality was assumed at the larval stage [ 47 , 57 ] because inter- and intra-specific competition (e.g., for food) at the larvae stage usually limits mosquito populations [ 58 ].…”

Section: Methodsmentioning

confidence: 99%

Modeling the Heterogeneity of Dengue Transmission in a City

Kong

Wang

et al. 2018

IJERPH

View full text Add to dashboard Cite

Dengue fever is one of the most important vector-borne diseases in the world, and modeling its transmission dynamics allows for determining the key influence factors and helps to perform interventions. The heterogeneity of mosquito bites of humans during the spread of dengue virus is an important factor that should be considered when modeling the dynamics. However, traditional models generally assumed homogeneous mixing between humans and vectors, which is inconsistent with reality. In this study, we proposed a compartmental model with negative binomial distribution transmission terms to model this heterogeneity at the population level. By including the aquatic stage of mosquitoes and incorporating the impacts of the environment and climate factors, an extended model was used to simulate the 2014 dengue outbreak in Guangzhou, China, and to simulate the spread of dengue in different scenarios. The results showed that a high level of heterogeneity can result in a small peak size in an outbreak. As the level of heterogeneity decreases, the transmission dynamics approximate the dynamics predicted by the corresponding homogeneous mixing model. The simulation results from different scenarios showed that performing interventions early and decreasing the carrying capacity for mosquitoes are necessary for preventing and controlling dengue epidemics. This study contributes to a better understanding of the impact of heterogeneity during the spread of dengue virus.

show abstract

“…Each life-stage was represented by an ordinary differential equation (the fifth to the eighth equation in Equation ( 6 )). The adults that are able to mate and feed (

and

Section: Methodsmentioning

confidence: 99%

Modeling the Heterogeneity of Dengue Transmission in a City

Kong

Wang

et al. 2018

IJERPH

View full text Add to dashboard Cite

show abstract

“…Mosquitoes (Diptera, Culicidae) include many of the most problematic insect pests, and are of particular medical significance. The adult females of many species require a blood meal from a vertebrate, which is located using CO 2 4 and other chemical cues, before producing eggs 5 . Mosquitoes vector filarial nematodes, a variety of bacterial infections (including tularaemia) and numerous viral diseases (including zika, yellow fever, dengue fever, chikungunya, West Nile virus and other arboviruses) 6 .…”

Section: Introductionmentioning

confidence: 99%

Elevated atmospheric CO2 promoted speciation in mosquitoes (Diptera, Culicidae)

et al. 2018

View full text Add to dashboard Cite

Mosquitoes are of great medical significance as vectors of deadly diseases. Despite this, little is known about their evolutionary history or how their present day diversity has been shaped. Within a phylogenetic framework, here we show a strong correlation between climate change and mosquito speciation rates: the first time to our knowledge such an effect has been demonstrated for insects. Information theory reveals that although climate change is correlated with mosquito evolution there are other important factors at play. We identify one such driver to be the rise of mammals, which are predominant hosts of Culicidae. Regardless of the precise mechanism, we demonstrate a strong historical association. This finding, taken in combination with projected rises in atmospheric CO2 from anthropogenic activity, has important implications for culicid vector distributions and abundance, and consequently for human health.

show abstract

“…This increase in range poses considerable health risks (McMichael & Lindgren, 2011;Medlock et al, 2012). Furthermore, there are increasing reports of resistance in mosquito populations to insecticides (Hemingway, Field, & Vontas, as well as permanent water sites and there are few aquatic habitats that do not lend themselves as a breeding site, often resulting in overlapping habitat range of these three genera (Becker et al, 2010;Yasuoka & Levins, 2007). Insect pathogenic fungi belonging to the genus Metarhizium have been developed to control a wide range of arthropods, including pests of crops and vectors of human and animal diseases (Ansari, Pope, Carpenter, Scholte, & Butt, 2011;Faria & Wraight, 2007;Frazzon, da Silva Vaz Junior, Masuda, Schrank, & Vainstein, 2000;Orlando Beys Silva, Mitidieri, Schrank, & Vainstein, 2005).…”

Section: Introductionmentioning

confidence: 97%

Identification ofMetarhiziumstrains highly efficacious againstAedes,AnophelesandCulexlarvae

Greenfield

Peace

Evans

et al. 2015

Biocontrol Science and Technology

View full text Add to dashboard Cite

Entomopathogenic fungi, such as Metarhizium anisopliae and Beauveria bassiana, have been shown to be efficacious in killing mosquito larvae of different mosquito species. The current study compared the pathogenicity and efficacy of two formulations of three fungal strains against different instars of three mosquito species with the aim of identifying the most virulent strain for use under field conditions. Three strains of Metarhizium, ARESF 4556, ARSEF 3297 and V275, were assayed against early (L 2−3 ) and late (L 3-4 ) instar larvae of Aedes aegypti, Anopheles stephensi and Culex quinquefasciatus. Two formulations of the fungi were tested, dry conidia and aqueous suspensions (i.e. 'wet' conidia). Effects of all combinations of conidia, mosquito species, instar, fungal strain and concentration on mosquito mortality were analysed using Cox regression and Kaplan-Meier analyses. Strain ARSEF 4556 was more virulent than ARSEF 3297 and V275, with LT 50 values ranging from 0.3 to 1.1 days, with Anopheles and Culex being more susceptible than Aedes. Early and late instars were equally susceptible independent of species. Although the formulation did influence mortality rates, both 'wet' and 'dry' conidia applications were highly effective in killing mosquito larvae. Viable spores were more efficacious than heat killed spores. The latter did cause mortality but only at high concentrations. Metarhizium sp. has proved to be effective in reducing survivability of all larval stages of Aedes, Anopheles and Culex under laboratory conditions. Aedes larvae were generally more tolerant than Anopheles and Culex irrespective of fungal strain.

show abstract

Biology of Mosquitoes

Cited by 42 publications

References 28 publications

Modeling the Heterogeneity of Dengue Transmission in a City

Modeling the Heterogeneity of Dengue Transmission in a City

Elevated atmospheric CO2 promoted speciation in mosquitoes (Diptera, Culicidae)

Identification ofMetarhiziumstrains highly efficacious againstAedes,AnophelesandCulexlarvae

Contact Info

Product

Resources

About