The status of Sorghum arundinaceum as a host of Atherigona soccata Rondani (Diptera: Muscidae) in Kenya

Delobel, A.G.L. and Unnithan, G.C. (1981) The status of Sorghum arundinaceum as a host of Atherigona soccata Rondani (Diptera: Muscidae) in Kenya. International Journal of Tropical Insect Science, 2 (1-2). pp. 67-71.

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Abstract

Surveys were conducted in two different ecological zones (semi-arid and arid) of Kenya to monitor egg, larval and pupal populations of the sorghum shootfly, Atherigona seccata, on a wild host, Sorghum arundinaceum. Populations were found to be usually higher on wild sorghum than on local varieties of Sorghum bicolor, the cultivated host. During dry periods, shootfly eggs and larvae were still found on wild sorghum, especially in moist areas such as beds of temporary streams or river banks. Population levels seem to be related primarily with the availability of susceptible stems, which in itself is determined by rainfall, soil conditions, density of other vegetation and by the phenology and the distribution of the host plant, Sorghum arundinaceum, being a pioneer species which colonizes recently disturbed areas and is subsequently replaced by other grass species. Since no evidence of the existence of an aestivation diapause has been found, it is reasonable to assume that Sorghum arundinaceum is a major reservoir for A. seccata, especially during the dry season

Item Type:	Article
Uncontrolled Keywords:	Atherigona soccata; population fluctuation; Sorghum arundinaceum; Sorghum bicolor; sorghum shootfly; Sorghum verticilliflorum
Author Affiliation:	International Centre of Insect Physiology and Ecology, P.O. Box 30772, Nairobi, Kenya
Subjects:	Plant Protection
Divisions:	Sorghum
Depositing User:	Ms K Syamalamba
Date Deposited:	19 Feb 2013 08:08
Last Modified:	19 Feb 2013 08:08
Official URL:	http://dx.doi.org/10.1017/S1742758400002186
URI:	http://eprints.icrisat.ac.in/id/eprint/9665

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