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1 December 2010 Population Dynamics of Noncytoplasmic Incompatibility-InducingWolbachia in Nilaparvata lugens and Its Effects on Host AdultLife Span and Female Fitness
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Abstract

Wolbachia are bacteria that live intracellularly in a wide variety of arthropods. They are maternally inherited and can affect both reproduction and fitness of its host. When infected males mate with uninfected females or females infected by a different Wolbachia strain, there is often a failure of karyogamy, which is usually attributed to cytoplasmic incompatibility (CI). We measured the strength of CI induced by Wolbachia and the fitness effects in three Chinese populations of the brown planthopper Nilaparvata lugens from Hainan, Yunnan, and Guangxi provinces, respectively. No evidence for CI was found in any of the populations, whereas an enhanced fecundity and shortened longevity were observed only in the Hainan population. The infection density was significantly higher in the Hainan population than in the Guangxi population. The Wolbachia strain infecting the three populations appeared to be the same based on the nucleotide sequence of the wsp gene. Therefore, the variable effects of Wolbachia on host fitness seem to be the result of differences in the host genetic background and Wolbachia infection density. The ability of the non-CI-inducing Wolbachia to maintain themselves in their hosts may be attributed to their positive effects on host fecundity and efficient maternal transmission.

© 2010 Entomological Society of America
Hui Zhang, Kai-Jun Zhang, and Xiao-Yue Hong "Population Dynamics of Noncytoplasmic Incompatibility-InducingWolbachia in Nilaparvata lugens and Its Effects on Host AdultLife Span and Female Fitness," Environmental Entomology 39(6), 1801-1809, (1 December 2010). https://doi.org/10.1603/EN10051
Received: 22 February 2010; Accepted: 1 July 2010; Published: 1 December 2010
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