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• W2129759370 abstract "Abstract In the present study the feeding activity of Chrysoperla carnea (Stephens) on eggs of the two lepidopterous species, Barathra brassicae L. and Spodoptera littoralis (Boisd.) was investigated. In both cases the number of eggs killed by C. carnea increased slowly and reached a peak in the third larval stage. By third stage larvae 367.7 eggs of B. brassicae , which is equivalent to 86.23% of the total amount, and 837.4 or 85.20% of S. littoralis eggs were killed. During larval development C. carnea consumed a mean total of 426.2 B. brassicae eggs compared to 982.9 S. littoralis eggs. The weight determination of the lepidopterous eggs revealed, that the eggs of B. brassicae had a weight of 101.1 mg per 1000 eggs and so were 2.33 times heavier than S. littoralis eggs which had a weight of 45.3 mg per 1000 eggs. Thus C. carnea larvae consumed 43.12 mg of B. brassicae and 44.54 mg of S. littoralis eggs. This indicated that C. carnea did kill a different number of eggs of the two lepidopterous species, the weight of the prey consumed however was the same. Zusammenfassung Fraßaktivität von Chrysoperla carnea (Stephens) gegenüber Kohleule, Barathra brassicae L. und Baumwolleule, Spodoptera littoralis (Boisd.) In der vorliegenden Arbeit wurde Chrysoperla carnea auf die Fraßaktivität gegenüber den beiden Lepidopteren‐Arten Barathra brassicae und Spodoptera littoralis untersucht. Bei beiden Arten stieg der Eiverzehr allmählich an und erreichte im dritten Larvenstadium ein Maximum. So wurden von B. brassicae in diesem Stadium durchschnittlich 367,7 Eier, was 86,23 % der Gesamtmenge entsprach, von S. littoralis 837,4 Eier oder 85,20 % gefressen. C. carnea vertilgte während der gesamten Larvenentwicklung 426,2 Eier von B. brassicae gegenüber 982,9 Eier von S. littoralis. Das Wiegen der Eier beider Lepidopteren‐Arten ergab, daß die Eier von B. brassicae mit einem Gewicht von 101,1 mg pro 1000 Eier 2,33mal schwerer waren als die Eier von S. littoralis mit einem Gewicht von 45,3 mg pro 1000 Eier. Somit verzehrte C. carnea 43,12 mg Eier von B. brassicae bzw. 44,54 mg Eier von S. littoralis. Hieraus wurde ersichtlich, daß C. carnea zwar eine unterschiedliche Anzahl Eier von beiden Lepidopteren‐Arten verzehrte, gewichtsmäßig blieb die Menge jedoch gleich." @default.
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• W2129759370 title "The feeding activity of Chrysoperla carnea (Stephens) on Barathra brassicae L. and Spodoptera littoralis (Boisd.)1" @default.
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• W2129759370 doi "https://doi.org/10.1111/j.1439-0418.1985.tb02773.x" @default.
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