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Rearing ofChaetorellia australis (Dipt., Tephritidae) on an artificial diet
Authors:I S Pittara  B I Katsoyannos
Institution:(1) Laboratory of Applied Zoology & Parasitology, University of Thessaloniki, Department of Agriculture, 54 006 Thessaloniki, Greece
Abstract:Larvae of the tephritid flyChaetorellia australis Hering, which infests flowerheads of the yellow starthistleCentaurea solstitialis L. (Asteraceae), and which is a candidate species for biological control, of that weed, were reared for the first time and for two consecutive generations on an artificial diet. At a density of 0.5 eggs per g diet a yield of 18.5% F1 adults (over hatched eggs), was obtained. When the density of eggs per g diet increased, the yield decreased. At 25°C the duration of development from egg to adult was 20–25 days for both generations. F1 adults reared on artificial diet had an average longevity of 32.0 days for males and 34.9 days for females. The fecundity was 53.3 eggs per female and the egg hatchability 88.8%. These and other biological parameters are similar to those of wild flies.
Keywords:Chaetorellia australis            Tephritidae  Diptera  rearing            Centaurea solstitialis            biological control  weeds
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