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Wolbachia Infection in a Natural Parasitoid Wasp Population.

Duplouy A, Couchoux C, Hanski I, van Nouhuys S - PLoS ONE (2015)

Bottom Line: Here, we identify three new Wolbachia pipientis strains, wHho, wHho2 and wHho3, infecting Hyposoter horticola, a specialist wasp parasitoid of the Glanville fritillary butterfly.The vertical transmission rate of Wolbachia is imperfect, and lower in the haplotype with lower infection rate, suggesting a fitness trade-off.We found no association of the wHho infection with fecundity, longevity or dispersal ability of the parasitoid host.

View Article: PubMed Central - PubMed

Affiliation: University of Helsinki, Metapopulation Research Centre, Department of Biosciences, P.O. Box 65, FI-00014, Helsinki, Finland.

ABSTRACT
The maternally transmitted bacterium Wolbachia pipientis is well known for spreading and persisting in insect populations through manipulation of the fitness of its host. Here, we identify three new Wolbachia pipientis strains, wHho, wHho2 and wHho3, infecting Hyposoter horticola, a specialist wasp parasitoid of the Glanville fritillary butterfly. The wHho strain (ST435) infects about 50% of the individuals in the Åland islands in Finland, with a different infection rate in the two mitochondrial (COI) haplotypes of the wasp. The vertical transmission rate of Wolbachia is imperfect, and lower in the haplotype with lower infection rate, suggesting a fitness trade-off. We found no association of the wHho infection with fecundity, longevity or dispersal ability of the parasitoid host. However, preliminary results convey spatial associations between Wolbachia infection, host mitochondrial haplotype and parasitism of H. horticola by its hyperparasitoid, Mesochorus cf. stigmaticus. We discuss the possibility that Wolbachia infection protects H. horticola against hyperparasitism.

No MeSH data available.


Related in: MedlinePlus

The egg-load of female wasps from the Åland islands in relation to their age and whether they are infected by Wolbachia (triangles, n = 111) or not (circles, n = 102).
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pone.0134843.g004: The egg-load of female wasps from the Åland islands in relation to their age and whether they are infected by Wolbachia (triangles, n = 111) or not (circles, n = 102).

Mentions: We found no association of Wolbachia infection with fitness-related traits in H. horticola. Infected and uninfected females had similar egg-load (520 and 522, df = 1, P>0.05, Fig 4). Females lived longer than males (37 versus 31 days, df = 1, P = 0.036), and Wolbachia infection was unrelated to longevity in either sex (df = 1, P>0.05, S2 Fig).


Wolbachia Infection in a Natural Parasitoid Wasp Population.

Duplouy A, Couchoux C, Hanski I, van Nouhuys S - PLoS ONE (2015)

The egg-load of female wasps from the Åland islands in relation to their age and whether they are infected by Wolbachia (triangles, n = 111) or not (circles, n = 102).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4526672&req=5

pone.0134843.g004: The egg-load of female wasps from the Åland islands in relation to their age and whether they are infected by Wolbachia (triangles, n = 111) or not (circles, n = 102).
Mentions: We found no association of Wolbachia infection with fitness-related traits in H. horticola. Infected and uninfected females had similar egg-load (520 and 522, df = 1, P>0.05, Fig 4). Females lived longer than males (37 versus 31 days, df = 1, P = 0.036), and Wolbachia infection was unrelated to longevity in either sex (df = 1, P>0.05, S2 Fig).

Bottom Line: Here, we identify three new Wolbachia pipientis strains, wHho, wHho2 and wHho3, infecting Hyposoter horticola, a specialist wasp parasitoid of the Glanville fritillary butterfly.The vertical transmission rate of Wolbachia is imperfect, and lower in the haplotype with lower infection rate, suggesting a fitness trade-off.We found no association of the wHho infection with fecundity, longevity or dispersal ability of the parasitoid host.

View Article: PubMed Central - PubMed

Affiliation: University of Helsinki, Metapopulation Research Centre, Department of Biosciences, P.O. Box 65, FI-00014, Helsinki, Finland.

ABSTRACT
The maternally transmitted bacterium Wolbachia pipientis is well known for spreading and persisting in insect populations through manipulation of the fitness of its host. Here, we identify three new Wolbachia pipientis strains, wHho, wHho2 and wHho3, infecting Hyposoter horticola, a specialist wasp parasitoid of the Glanville fritillary butterfly. The wHho strain (ST435) infects about 50% of the individuals in the Åland islands in Finland, with a different infection rate in the two mitochondrial (COI) haplotypes of the wasp. The vertical transmission rate of Wolbachia is imperfect, and lower in the haplotype with lower infection rate, suggesting a fitness trade-off. We found no association of the wHho infection with fecundity, longevity or dispersal ability of the parasitoid host. However, preliminary results convey spatial associations between Wolbachia infection, host mitochondrial haplotype and parasitism of H. horticola by its hyperparasitoid, Mesochorus cf. stigmaticus. We discuss the possibility that Wolbachia infection protects H. horticola against hyperparasitism.

No MeSH data available.


Related in: MedlinePlus