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Evaluation of the overwintering success of two european microsporidia inoculatively released into gypsy moth populations in maryland usa

, : Evaluation of the overwintering success of two european microsporidia inoculatively released into gypsy moth populations in maryland usa. Journal of Invertebrate Pathology 53(2): 235-240

The overwintering success of two European microsporidia released into gypsy moth populations in Maryland during 1986 is compared. Even though the Vavraia sp. was not detected during 1987, the nosema sp. was found at levels similar to those of 1986. infection levels were 7.9% in first-instar larvae, 6.5% in later instar larvae, and 10% in adults. Vavraia sp. is not transovarialy transmitted. Nosema sp. is transmitted transovarialy, which may account for its overwintering success. Our study demosntrates that microsporidian pathogens can be introduced into gypsy moth populations through inoculative release of contaminated egg masses.


DOI: 10.1016/0022-2011(89)90012-8

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