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Studies on the legume pod-borer, Maruca testulalis (Geyer)—I: Life cycle and behaviour

Published online by Cambridge University Press:  19 September 2011

J. B. Okeyo-Owuor  and
R. S. Ochieng
J. B. Okeyo-Owuor
Affiliation:
International Centre of Insect Physiology and Ecology (ICIPE), Mbita Point Field Station, Private Bag, Mbita, via Homa Bay, Kenya
R. S. Ochieng
Affiliation:
International Centre of Insect Physiology and Ecology (ICIPE), Mbita Point Field Station, Private Bag, Mbita, via Homa Bay, Kenya
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Abstract

Preliminary studies on the life history and behaviour of the legume podborer, Maruca testulalis (Geyer), at Mbita Point on the shores of Lake Victoria have shown that most of the eggs (86%) of M. testulalis are laid on the leaf. Over 90% of such eggs laid on the leaf are oviposited on the lower leaf surface. Most adults were found to emerge between 2000 and 2300 hr. The number of eggs laid per female varied between 6 and 194, and over 72% of these were fertile. No larval or pupal diapause was observed.

Larval duration was 8–14 days and the pre-pupal stage lasted only 12–24 hr. The whole life cycle at Mbita Point was found to be about 20–57 days.

An important factor that previously discouraged detailed studies on the biology of M. testulalis is the fact that the eggs are translucent and extremely difficult to see against the background of the oviposition site. The discovery of these eggs was a major step in beginning to work on this important pest.

Keywords

Legume pod-borercowpealife historyMaruca testulalisemergencePyralidaeLepidopterareticulate
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 1 , Issue 3 , September 1981 , pp. 263 - 268
Copyright
Copyright © ICIPE 1981

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References

REFERENCES

Bohlen, H. (1973) On pests of pulses and their control. In Crop Pests in Tanzania and Their Control (Ed. by Federal Agency for Economic Cooperation), pp. 91–97. Paul Parey, Berlin.Google Scholar
Booker, R. H. (1965) Pests of cowpea and their control in Northern Nigeria. Bull. ent. Res. 55, 663–672.CrossRefGoogle Scholar
Jerath, M. L. (1968) Insecticide control of Maruca testulalis on cowpea in Nigeria. J. econ. Ent. 61, 413–416.CrossRefGoogle Scholar
Okeyo-Owuor, J. B. (1978) Insect podborers of pigeonpea, Cajanus cajan (L.) Millsp and their influence on developing pods and final seed yield in Kenya. M.Sc. thesis, University of Nairobi, Kenya.Google Scholar
Summerfield, R. J., Huxley, P. A. and Steel, W. (1974) On cowpea Vigna unguiculata (L.) (Walk). In Field Crop Abstracts 27(7), 301–312.Google Scholar
Taylor, T. A. (1968) Effect of insecticide application on insect damage and performance of cowpea in Southern Nigeria. Nigerian agric. J. 5 (1), 29–37.Google Scholar
Taylor, T. A. (1978) Maruca testulalis an important pest of tropical grain legumes. In Pests of Grain Legumes: Ecology and Control (Ed. by Singh, S. R., Van Emden, H. F. and Taylor, T. A.), pp. 193–202. Academic Press, London.Google Scholar
Taylor, T. A. and Ezednima, F. C. O. (1964) Preliminary investigations on field pests of cowpeas and method of control. Nigerian agric. J. 1 (1), 8–11.Google Scholar