Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 318359
Title How does infection with parthenogenesis-inducing Wolbachia reduce the fitness of Trichogramma?
Author(s) Tagami, Y.; Miura, K.; Stouthamer, R.
Source Journal of Invertebrate Pathology 78 (2001). - ISSN 0022-2011 - p. 267 - 271.
Department(s) Laboratory of Entomology
Publication type Refereed Article in a scientific journal
Publication year 2001
Abstract We analyzed the survival rate of the immature stages of Trichogramma species and lines that differed in their mode of reproduction. Specifically, we compared the mortality of arrhenotokous (W-), irrevertable thelytokous (W-), and Wolbachia-associated thelytokous (W ) forms. The embryonic mortality of the W strains was significantly higher than that of the W- lines. The embryonic mortality was negligible for the arrhenotokous Trichogramma evanescens and the thelytokous Trichogramma cacoeciae, which is not infected with Wolbachia. Only 30 f the eggs of the Wolbachia-infected strains developed to adults, while the emergence rate of the Wolbachia-free strains was more than 78°irrespective of the origin of the strains. More than 78 f the overall mortality in W strains happened during the early stages of development. About 35 f embryos of W strains remain in the mitotic stage even 48 h after oviposition. Most embryos of W- strains had already developed to cellular blastoderm after 6 h, regardless of strains. The mortality of immature stages in W strains was mainly caused by the failure of the mitotic divisions
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