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Observations on the seasonal incidence of microsporidiosis in European corn borer populations in Illinois

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Summary

Examinations of living and dead larvalPyrausta nubilalis (Hübner) collected in the field over a four-year period indicate that infections caused byPerezia pyraustae Paillot are widely distributed within populations ofP. nubilalis in Illinois.

Observed fluctuations in the incidence of the parasite among living and dead insects collected in various seasons was taken as evidence that the disease interacts with temperature to cause mortality in populations of the host.

Résumé

Des examens des larves vivantes et mortes dePyrausta nubilalis (Hübner) collectées dans les champs pendant quatre années consécutives indiquent que des infections parPerezia pyraustae Paillot sont très fréquentes dans les populations deP. nubilalis en Illinois (États-Unis).

Les fluctuations observées dans l'incidence du parasite dans les insectes vivants et morts recueillis pendant plusieurs saisons montrent que la maladie est influencée par la température, celle-ci occasionnant la mortalité dans les populations de l'hôte.

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Literature Cited

  • Hall, I. M. — 1952. Observations onPerezia pyraustae Paillot a microsporidian parasite of the European corn borer. —Jour. Parasitol.,38, 48–52.

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  • Kramer, J. P. — 1959a. Studies on the morphology and life history ofPerezia pyraustae Paillot (Microsporidia: Nosematidae). — Trans. Am. Microscop. Soc. (in press).

  • Kramer, J. P. — 1959b. Some relationships betweenPerezia pyraustae Paillot (Sporozoa: Nosematidae) andPyrausta nubilalis (Hbn.) (Lepidoptera: Pyralidae). — Jour. Insect Pathology (in press).

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Author notes

  1. John Paul Kramer

    Present address: Department of Entomology, North Carolina State College, Raleigh, North Carolina, USA

Authors and Affiliations

  1. Illinois Natural History Survey, Urbana, Illinois

    John Paul Kramer

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  1. John Paul Kramer
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Additional information

An abridgment of a portion of a thesis submitted in partial fulfillment of the requirements for the degree Doctor of Philosophy in the Graduate College of the University of Illinois, 1958.

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Kramer, J.P. Observations on the seasonal incidence of microsporidiosis in European corn borer populations in Illinois. Entomophaga 4, 37–42 (1959). https://doi.org/10.1007/BF02376100

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  • DOI: https://doi.org/10.1007/BF02376100

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