How do Wolbachia Symbionts Increase the Proportion of Females in Their Hosts?

Pintureau, Bernard; Grenier, S.; Rigaud, Thierry

doi:10.1007/0-306-48173-1_40

Cited by 3 publications

(2 citation statements)

References 103 publications

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“…However, females infected with the endosymbiotic bacteria, Wolbachia, are enabled to produce diploid female progeny from both fertilized and unfertilized eggs, a process known as parthenogenesis induction (Pintureau et al 2002). Wolbachia-induced parthenogenesis has been already reported in at least 18 species of Trichogramma wasps (Pinto and Stouthamer 1994;de Almeida 2004;Farrokhi 2010), including the Iranian strains of T. brassicae (Poorjavad et al 2012;Karimi et al 2010).…”

Section: Introductionmentioning

confidence: 98%

CanWolbachiainfection improve qualitative characteristics ofTrichogramma brassicaereared on cold stored eggs of the host?

Nazeri

Ashouri

Hosseini

2015

International Journal of Pest Management

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The mass production cost of parasitoids is an important limiting factor in the development of successful biological control program. Parasitoids cannot be stored for a long time, thus should be produced shortly before use. Storage of host in low temperatures is an alternative technique to increase time flexibility of parasitoids production, thus contribute to reduction of production expenses. In this study, the influence of cold storage time (1 to 16 days) of host (Ephestia kuehniella Zeller) eggs on some qualitative characteristics of the egg parasitoid, Trichogramma brassicae Bezdenko (Hym.: Trichogrammatidae), was studied under laboratory conditions. The stored eggs were exposed to two different strains of T. brassicae, which were infected or uninfected with the endosymbiotic bacteria, Wolbachia, and the interactions between the host storage time and Wolbachia infection was studied. Increased host storage time negatively affected some qualitative characteristics of T. brassicae, such as fecundity, longevity, wing deformity and sex ratio. Some of these effects (e.g. fecundity, longevity and sex ratio) were different among Wolbachia-infected and uninfected strains. Given that the Wolbachia-infected strain produces higher proportion of females, they may compensate for other negative effects of Wolbachia as well as prolonged storage time of the host from biological control point of view.

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Section: Introductionmentioning

confidence: 98%

CanWolbachiainfection improve qualitative characteristics ofTrichogramma brassicaereared on cold stored eggs of the host?

Nazeri

Ashouri

Hosseini

2015

International Journal of Pest Management

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“…They are used world‐wide for the biological control of several crop pests, such as the European corn borer (Hawlitzky & Voegelé, 1991). Some Trichogramma species are infected by endosymbiotic bacteria belonging to the genus Wolbachia , and these induce a thelytokous parthenogenetic mode of reproduction (Stouthamer, 1997; Pintureau et al., 2001).…”

Section: Introductionmentioning

confidence: 99%

Effects of endosymbioticWolbachiaon the diapause inTrichogrammahosts and effects of the diapause onWolbachia

Pintureau

Pizzol²,

Bolland

2003

Entomologia Exp Applicata

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Used as an agent in biological control, Trichogramma which has been infected by endosymbiotic bacteria belonging to the genus Wolbachia and inducing the thelytokous mode of reproduction, increases rearing productivity in commercial insectaries. These insectaries can now make use of Trichogramma diapause to spread out and optimise their production. We therefore studied the effect of Wolbachia on the diapause in Trichogramma evanescens . The symbionts show no beneficial or harmful effect on the proportion of emergence in diapausing individuals or on their fecundity. Therefore, infected strains can easily be used in crop protection. On the other hand, low temperatures exert a slightly negative effect on Wolbachia, as detected from the proportion of females in the offspring of symbiotic diapausing females.

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Co-Existence, Phylogeny and Putative Role of Wolbachia and Yeast-Like Symbiont (YLS) in Kerria lacca (Kerr)

Vashishtha

Sharama²

2011

Curr Microbiol

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This study reports the first detection of Wolbachia and yeast-like symbiont (YLS) harbored in Kerria lacca (Kerr), a scale insect, latter of which produces an economically important natural resin, known as lac. Wolbachia was detected using PCR amplification and sequencing of 16S rDNA; and further confirmation and phylogenetic analysis was carried out by fast evolving wsp gene. Neighbor-joining and maximum parsimonious (MP) analysis showed that this strain belongs to subgroup "ori" of Wolbachia super group B of arthropods. Wolbachia of K. lacca is hereby designated as "wKerlac" according to Wolbachia nomenclature system. Histological study revealed the presence of yeast-like endosymbiont, which was also confirmed by PCR amplification of 18S rDNA. Phylogenetic analysis revealed that YLS of K. lacca is quite distinct from YLS of aphid, planthoppers, and beetles. Putative roles of Wolbachia in lecanoid chromosome system of sex determination and in biased sex ratio of K. lacca populations; and YLS in nutritional supplementation and detoxifying substances which are deleterious to K. lacca, are hereby, suggested.

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How do Wolbachia Symbionts Increase the Proportion of Females in Their Hosts?

Cited by 3 publications

References 103 publications

CanWolbachiainfection improve qualitative characteristics ofTrichogramma brassicaereared on cold stored eggs of the host?

CanWolbachiainfection improve qualitative characteristics ofTrichogramma brassicaereared on cold stored eggs of the host?

Effects of endosymbioticWolbachiaon the diapause inTrichogrammahosts and effects of the diapause onWolbachia

Co-Existence, Phylogeny and Putative Role of Wolbachia and Yeast-Like Symbiont (YLS) in Kerria lacca (Kerr)

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