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Development and survival of Apanteles flavipes (Cam.) (Hymenoptera, Braconidae) on Chilo partellus (Swinh.) (Lepidoptera, Pyralidae) larvae reared on gram-flour diet

Published online by Cambridge University Press:  19 September 2011

C. Inayatullah
C. Inayatullah
Affiliation:
Pakistan Station, Commonwealth Institute of Biological Control, Rawalpindi, Pakistan
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Abstract

The suitability of Chilo partellus (Swinh.) larvae reared on gram (Cicer arietinum) flour diet, for rearing of the parasite, Apanteles flavipes (Cam.), was determined. The successful parasitism on diet fed or control larvae (reared on maize stems) was almost equal. There was also no significant difference in the mean egg-larval period of the parasite developed on both kinds of the hosts. However, on diet reared larvae, significantly more parasite grubs (20.3/host) failed to pupate as compared with control larvae (3.5/host). Consequently, the parasite cocoon production/host on them declined significantly but not drastically as they supported more number of parasite grubs/host as compared to control larvae.

Reasons of the failure of parasite grubs to pupate in diet are not certain but considering all the biological attributes of the parasite developed on diet reared larvae, the diet is recommended for its mass multiplication.

Résumé

Il s'agissait de déterminer l'adaptabilité des larves du Chilo partellus (swinh.) soumises a un régime de farine de pois chiche (Cicer arietinum) à la culture du parasite Apanteles flavipes (Cam.)— L'aptitude parasitique était presque la même chez les larves soumises à un régime et chez les larves témoins (nourries aux tiges de máís). Aucune différence remarquable n'était observée dans la periode moyenne oeuf—larve du parasite cultivé sur les deux types d'hôtes.

Néammoins, dans le cas de larves soumises au régime, un plus grand nombre de larves du parasite (20.3/hôte) ne se sont pas, d'une façon considérable, chrysalidées par rapport aux larves témoins (3.5/hôte).

En conséquence, la production coconnière par hôte a considérablement diminué mais pas d'une façon alarmante puis qu'elles portaient un plus grand nombre de larvés parasitaires par rapport aux larves témoins.

Les raisons de ce manque de métamorphose (en nymphe) des larves parasitaires, ne sont pas bien connues, mais étant donné tous les attributs du parasite dont le développement s'est fait sur les larves soumises à un régime, on ne peut que recommender ce dernier—car il stimule une multiplication massive.

Keywords

Apanteles flavipesChilo partellusmass multiplicationbiology
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 8 , Issue 1 , February 1987 , pp. 95 - 97
Copyright
Copyright © ICIPE 1987

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References

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