A FIELD TRIAL ON CONTROL OF <i>CULEX QUINQUEFASCIATUS</i> BY RELEASE OF MALES OF A STRAIN INTEGRATING CYTOPLASMIC INCOMPATIBILITY AND A TRANSLOCATION

Curtis, C. F.; Brooks, G. D.; Ansari, M. A.; Grover, K. K.; Krishnamurthy, B. S.; Rajagopalan, P. K.; Sharma, Luv; Sharma, Vineeta; Singh, Dileep Kumar; Singh, K. R. P.; Yasuno, Masayuki

doi:10.1111/j.1570-7458.1982.tb03133.x

Cited by 40 publications

(21 citation statements)

References 5 publications

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“…Among these mechanisms, those that reduce or suppress panmixia such as assortative mating may lead to the stable coexistence of incompatible Wolbachia. Our mating experiments disclosed no evidence that C. pipiens can discriminate between compatible and incompatible partners, corroborating similar results of previous laboratory investigations (Curtis and Adak, 1974;Curtis et al, 1982). We note that such an experimental approach would not be appropriate for females to avoid incompatible males in smallcage experiments.…”

Section: Discussionsupporting

confidence: 90%

“…Furthermore, the behavior of C. pipiens lines could be altered under artificial selection because of long-term laboratory conditions. However, field release of incompatible C. pipiens males gave rise to high percentages of incompatible egg rafts (Laven, 1967a;Curtis et al, 1982). For instance, Laven (1967a) obtained 100% of incompatible egg rafts within a few weeks of release of incompatible males in natural breeding sites, suggesting that females in the field did not discriminate between compatible and incompatibles males.…”

Section: Discussionmentioning

confidence: 99%

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Many compatible Wolbachia strains coexist within natural populations of Culex pipiens mosquito

2010

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Maternally inherited Wolbachia often manipulate the reproduction of arthropods to promote their transmission. In most species, Wolbachia exert a form of conditional sterility termed cytoplasmic incompatibility (CI), characterized by the death of embryos produced by the mating between individuals with incompatible Wolbachia infections. From a theoretical perspective, no stable coexistence of incompatible Wolbachia infections is expected within host populations and CI should induce the invasion of one strain or of a set of compatible strains. In this study, we investigated this prediction on CI dynamics in natural populations of the common house mosquito Culex pipiens. We surveyed the Wolbachia diversity and the expression of CI in breeding sites of the south of France between 1990 and 2005. We found that geographically close C. pipiens populations harbor considerable Wolbachia diversity, which is stably maintained over 15 years. We also observed a very low frequency of infertile clutches within each sampled site. Meanwhile, mating choice experiments conducted in laboratory conditions showed that assortative mating does not occur. Overall, this suggests that a large set of compatible Wolbachia strains are always locally dominant within mosquito populations thus, fitting with the theoretical expectations on CI dynamics.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Many compatible Wolbachia strains coexist within natural populations of Culex pipiens mosquito

2010

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“…polynesiensis population sustenance. To overcome immigration issues from costal areas, a "barrier zone" could be prescribed by using traditional control methods (Curtis et al 1982) or by increasing the release rate of sterilizing males if an SIT strategy is to be conducted (Benedict and Robinson 2003).…”

Section: Discussionmentioning

confidence: 99%

Population Studies of the Filarial VectorAedes polynesiensis(Diptera: Culicidae) in Two Island Settings of French Polynesia

et al. 2013

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A mark-release-recapture study was conducted to estimate the adult population size, migration, and dispersal patterns of male and female Aedes (Stegomyia) polynesiensis (Marks) in a valley of Moorea, a volcanic island, and a motu (islet) on the atoll of Tetiaroa, two settings typical of the Society Islands. Aedes polynesiensis recapture rate was high for females and low for males. The distribution of Aedes species in the valley was heterogeneous. Marked individuals dispersed to most parts of the motu and over great distances in the valley for some females. The study provides insights into the field dynamics of Ae. polynesiensis populations and confirms that more efficient sampling methods are warranted. There was no evidence of active migration between motus on the atoll, suggesting that Tetiaroa is a suitable site for small-scale initial open releases of Wolbachia incompatible insect technique and other sterile insect technique-like suppression or replacement strategies.

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“…pipiens females cannot discriminate between compatible and incompatible partners (Laven 1967b; Curtis & Adak ; Curtis et al . ; Duron et al . ).…”

Section: Discussionmentioning

confidence: 99%

Stable coexistence of incompatible Wolbachia along a narrow contact zone in mosquito field populations

et al. 2015

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In arthropods, the intracellular bacteria Wolbachia often induce cytoplasmic incompatibility (CI) between sperm and egg, which causes conditional embryonic death and promotes the spatial spread of Wolbachia infections into host populations. The ability of Wolbachia to spread in natural populations through CI has attracted attention for using these bacteria in vector-borne disease control. The dynamics of incompatible Wolbachia infections have been deeply investigated theoretically, whereas in natural populations, there are only few examples described, especially among incompatible infected hosts. Here, we have surveyed the distribution of two molecular Wolbachia strains (wPip11 and wPip31) infecting the mosquito Culex pipiens in Tunisia. We delineated a clear spatial structure of both infections, with a sharp contact zone separating their distribution areas. Crossing experiments with isofemale lines from different localities showed three crossing types: wPip11-infected males always sterilize wPip31-infected females; however, while most wPip31-infected males were compatible with wPip11-infected females, a few completely sterilize them. The wPip11 strain was thus expected to spread, but temporal dynamics over 7 years of monitoring shows the stability of the contact zone. We examined which factors may contribute to the observed stability, both theoretically and empirically. Population cage experiments, field samples and modelling did not support significant impacts of local adaptation or assortative mating on the stability of wPip infection structure. By contrast, low dispersal probability and metapopulation dynamics in the host Cx. pipiens probably play major roles. This study highlights the need of understanding CI dynamics in natural populations to design effective and sustainable Wolbachia-based control strategies.

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A FIELD TRIAL ON CONTROL OF CULEX QUINQUEFASCIATUS BY RELEASE OF MALES OF A STRAIN INTEGRATING CYTOPLASMIC INCOMPATIBILITY AND A TRANSLOCATION

Cited by 40 publications

References 5 publications

Many compatible Wolbachia strains coexist within natural populations of Culex pipiens mosquito

Many compatible Wolbachia strains coexist within natural populations of Culex pipiens mosquito

Population Studies of the Filarial VectorAedes polynesiensis(Diptera: Culicidae) in Two Island Settings of French Polynesia

Stable coexistence of incompatible Wolbachia along a narrow contact zone in mosquito field populations

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