REPRODUCTIVE ISOLATION INSTEGOMYIAMOSQUITOES. II. HYBRID BREAKDOWN BETWEENAEDES AEGYPTIANDA. MASCARENSIS

Hartberg, W. K.; Craig, George B.

doi:10.1111/j.1558-5646.1970.tb01805.x

Cited by 14 publications

(7 citation statements)

References 10 publications

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“…The Rockefeller (Rock) strain was established in 1959 in the Rockefeller Institute (New York, NY) [30]. It was used in all assays, and along all generations, as an internal standard control of experimental conditions.…”

Section: Methodsmentioning

confidence: 99%

Effect of Insecticide Resistance on Development, Longevity and Reproduction of Field or Laboratory Selected Aedes aegypti Populations

et al. 2012

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Aedes aegypti dispersion is the major reason for the increase in dengue transmission in South America. In Brazil, control of this mosquito strongly relies on the use of pyrethroids and organophosphates against adults and larvae, respectively. In consequence, many Ae. aegypti field populations are resistant to these compounds. Resistance has a significant adaptive value in the presence of insecticide treatment. However some selected mechanisms can influence important biological processes, leading to a high fitness cost in the absence of insecticide pressure. We investigated the dynamics of insecticide resistance and its potential fitness cost in five field populations and in a lineage selected for deltamethrin resistance in the laboratory, for nine generations. For all populations the life-trait parameters investigated were larval development, sex ratio, adult longevity, relative amount of ingested blood, rate of ovipositing females, size of egglaying and eggs viability. In the five natural populations, the effects on the life-trait parameters were discrete but directly proportional to resistance level. In addition, several viability parameters were strongly affected in the laboratory selected population compared to its unselected control. Our results suggest that mechanisms selected for organophosphate and pyrethroid resistance caused the accumulation of alleles with negative effects on different life-traits and corroborate the hypothesis that insecticide resistance is associated with a high fitness cost.

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Section: Methodsmentioning

confidence: 99%

Effect of Insecticide Resistance on Development, Longevity and Reproduction of Field or Laboratory Selected Aedes aegypti Populations

et al. 2012

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“…The Rockefeller strain, an insecticide-susceptible reference strain, was used as a control for each test (Hartberg & Craig-jr 1970). Mosquito rearing and experimentation were performed at 26 ± 1ºC and relative humidity 70 ± 10%.…”

Section: Methodsmentioning

confidence: 99%

The efficacy of a chitin synthesis inhibitor against field populations of organophosphate-resistant Aedes aegypti in Brazil

Fontoura

Bellinato

Valle

et al. 2012

Mem. Inst. Oswaldo Cruz

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Key words: Aedes aegypti -chitin synthesis inhibitors -temephos -deltamethrin -novaluron -cross-resistance Among the arboviruses transmitted by mosquitoes throughout the world, dengue is presently the most relevant; it is endemic to all of the continents, except Europe (Nogueira et al. 2001, Forattini 2002, Claro et al. 2004. Brazil has an alarming dengue incidence with several outbreaks all over the country and an increasing incidence of severe cases. Therefore, major public health campaigns target this disease (Teixeira et al. 1999, Câ-mara et al. 2007, MS/SVS 2009.Specific drugs and an effective vaccine against dengue virus are not yet available (Durbin & Whitehead 2010). Consequently, the only way to control the dengue epidemiological network is to target the virus' vector, Aedes aegypti (Medronho 2006. Although the elimination of potential Aedes breeding sites is increasingly considered a crucial component of dengue control, the utilisation of chemical insecticides is still a common measure. Until very recently, the most commonly used insecticides against Aedes in Brazil were the organophosphate temephos and the pyrethroid deltamethrin, which are used to control the larval and adult populations, respectively .The continuous use of chemical insecticides can lead to the dissemination of resistance and the consequent failure of the control efforts. Therefore, alternative methods of controlling disease-transmitting vectors are urgently needed. Two examples are entomopathogenic bacteria and insect growth regulators (IGRs). The biological insecticide Bacillus thuringiensis serovar israelensis (Bti) has been employed against Ae. aegypti in various municipalities of Brazil. However, the reduced field persistence of commercially available Bti formulations is an obstacle; under tropical conditions, the maximal residual effect observed lasted four weeks .In contrast to the classical chemical insecticides and biolarvicides, IGRs are not directly toxic, but act selectively on the development, metamorphosis or reproduction of the target insect species (Hoffmann & Lorenz 1998, Martins & Silva 2004. Among IGRs, the chitin synthesis inhibitors (CSIs) act by interfering with the synthesis or deposition of chitin on the exoskeleton or other chitinised internal structures, such as the peritrophic matrix (Merzendorf & Zimoch 2003, Merzendorf 2005.Novaluron is a CSI that is already utilised in agriculture. It is highly effective against Coleoptera, Homoptera and Lepidoptera larvae of several crop pests . It can act through ingestion, as verified in the larvae of the moth species Spodoptera littoralis and Helicoverpa armigera, or through contact, as reported with the flies Bemisia tabaci and Trialeurodes vaporariorum (Ishaaya et al. 1996(Ishaaya et al. , 1998. Novaluron is also efficient against Ae. aegypti larvae, as reported by Mulla et al. (2003) and Arredondo-jiménez and Valdez-Delgado (2006). Because novaluron is recommended by the World Health Organization for use in drinking water, it represents a potential tool in the con...

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“…As is obvious, the emphasis of this work has been in the subgenus Stegomyia with particular attention to the A. scutellaris complex. The detailed results of most of these crosses have been extensively reviewed by McClelland (1967) and Kitz- McClelland 1961McClelland and Mamet 1962, Hartberg and Craig 1970, Motara and Rai 1977" Leahy and Craig 1967Hartberg 1972Woodhill 1949WoodhiU 1950Woodhill 1954Perry 1950Rozeboom and Gilford 1954Gubler 1970 All and Brust 1974Truman and Craig, 1968, Grimstad 1974 * Cytology of species hybrids examined. miller (1976) and will therefore not be repeated here.…”

Section: Cytogenetics Of Interspecific Hybridsmentioning

confidence: 99%

“…As shown by various workers (McClelland 1967, Hartberg & Craig 1970, these two species interbreed freely in laboratory cages and the F1 's are highly fertile. However, a cytogenetic study based on Giemsa C-banding of the F1 hybrids and certain backcrosses between A. aegypti and A. mascarensis revealed novel results (Motara & Rai 1977).…”

Section: Cytogenetics Of Interspecific Hybridsmentioning

confidence: 99%

Evolutionary cytogenetics of Aedine mosquitoes

1980

Genetica

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REPRODUCTIVE ISOLATION INSTEGOMYIAMOSQUITOES. II. HYBRID BREAKDOWN BETWEENAEDES AEGYPTIANDA. MASCARENSIS

Cited by 14 publications

References 10 publications

Effect of Insecticide Resistance on Development, Longevity and Reproduction of Field or Laboratory Selected Aedes aegypti Populations

Effect of Insecticide Resistance on Development, Longevity and Reproduction of Field or Laboratory Selected Aedes aegypti Populations

The efficacy of a chitin synthesis inhibitor against field populations of organophosphate-resistant Aedes aegypti in Brazil

Evolutionary cytogenetics of Aedine mosquitoes

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