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Vertical transmission of a microsporidian Nosema marucae in the cereal stem borer Chilo partellus

Published online by Cambridge University Press:  19 September 2011

James A. Ogwang  and
Maurice O. Odindo
James A. Ogwang
Affiliation:
The International Centre of Insect Physiology and Ecology (ICIPE), P. O. Box 30, Mbita, Kenya
Maurice O. Odindo*
Affiliation:
The International Centre of Insect Physiology and Ecology (ICIPE), P. O. Box 30, Mbita, Kenya
*
* To whom correspondence should be addressed.
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Abstract

Studies were carried out to elucidate the parental (vertical) transmission of Nosema marucae Odindo and Jura, in infected females of Chilo partellus Swinhoe. Results indicated that only infected females of C. partellus could pass infection to the offspring. Infection also lowered both the total number of eggs laid per female and egg hatchability- Some adults which developed from the sublethally infected fifth instar larvae of C. partellus had deformed wings while some pharate adults failed to free themselves from the pupal cases. The significance of these deformities to the ecological survival of C. partellus is discussed.

Résumé

Les études ont été conduites pour déterminer la transmission verticale de Nosema marucae Odindo et Jura, dans les femelles infecteés de Chilo partellus Swinhoe. Les résultats ont montré que seules les femelles de C. partellus infectees peuvent transmettre l'infection aux progénitures. L'infection reduit aussi bien le nombre total des pontes par femelle que leur éclosion. Certains adultes issus des larves du 5éme stade soumises aux doses subléthales avaient des ailes déformées, tandis que d'autres étaient incapables de se détacher de la chyrsalide. L'importance de ces diformités sur la survie écologique de C. partellus est discutée.

Keywords

Chilo partellusNosema marucaefecunditydeformed adultsparental transmissionChilo partellusNosema marucae féconditédiformitétransmission parentale
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 14 , Issue 4 , August 1993 , pp. 489 - 492
Copyright
Copyright © ICIPE 1993

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References

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