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ARPN Journal of Science and Technology >> Volume 7, Issue 1, January 2017

ARPN Journal of Science and Technology


The Sorghum midge, (Stenodiplosis sorghicola Coq), (Diptera: Cecidomyiidae), Parasitoids and Predators and Their Abundance in Rain fed Areas, Sudan

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Author Anas A. Fadlelmula
ISSN 2225-7217
On Pages 601-604
Volume No. 4
Issue No. 10
Issue Date November 01, 2014
Publishing Date November 01, 2014
Keywords Sorghum midge, abundance, parasitoids, predators



Abstract

Sorghum midge, (Stenodiplosis sorghicola Coq.), parasitoids and predators and their abundance were studied during October December 2010 and 2011 at Damazine Research Station Farm (Longitude N 11 46o and Latitude E 034 21o). Parasitoids showed low population level during October and December and peaked in mid November (33-38 and 27-30 parasitoid adults/panicle/bottle in the years 2010 and 2011 respectively). On the other hand, the midge incidence was remained high during the period from October, 30 to November, 20 (198 217 and 126-189 midge adults/ panicle/ bottle in 2010 and 2011 respectively) then starts to decrease during December and onwards. The results of identification revealed that, eulophids Aprostocetus sp, Tetrastichus sp and unidentified hymenopterous sp were recorded as parasitoids of sorghum midge and Aprostocetus sp was found in large numbers followed by Tetrastichus sp and the unidentified hymenopterous sp. The Orius (Minute pirate bug) and spiders are the most abundant predators and their incidence was peaked during the 4th week of October to the 2nd week of November.


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