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Meisner, J., Department of Toxicology, The Volcani Institute of Agricultural Research, Bet DaganIsrael
Ascher, K.R.S., Department of Toxicology, The Volcani Institute of Agricultural Research, Bet DaganIsrael
Flowers, H.M., Department of Biophysics, The Weizmann Institute of Science, Rehovot, Israel
1. 1. The effect of twenty-five sugars and related compounds on the feeding response of larvae of Spodoptera littoralis was investigated using the Styropor method. 2. 2. Styropor lamellae were treated with 0·25 and 0·0625 M solutions. The weight of the lamellae consumed and the number and weight of fecal pellets, served as criteria of feeding stimulation. 3. 3. Sucrose, raffinose, maltose, d-fructose, melibiose and d-glucose were found to be very active as phagostimulants. 4. 4. The survival of larvae which had fed on sugar-treated Styropor for 3 days was the longest on sucrose, maltose, glucose, fructose, raffinose and melezitose. 5. 5. Some of the sugars were assayed in pairs in different choice and no-choice experiments; no antagonistic or inhibitory effects were found. © 1972.
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The feeding response of the larva of the egyptian cotton leafworm, Spodoptera littoralis boisd., to sugars and related compounds-I. Phagostimulatory and deterrent effects
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Meisner, J., Department of Toxicology, The Volcani Institute of Agricultural Research, Bet DaganIsrael
Ascher, K.R.S., Department of Toxicology, The Volcani Institute of Agricultural Research, Bet DaganIsrael
Flowers, H.M., Department of Biophysics, The Weizmann Institute of Science, Rehovot, Israel
The feeding response of the larva of the egyptian cotton leafworm, Spodoptera littoralis boisd., to sugars and related compounds-I. Phagostimulatory and deterrent effects
1. 1. The effect of twenty-five sugars and related compounds on the feeding response of larvae of Spodoptera littoralis was investigated using the Styropor method. 2. 2. Styropor lamellae were treated with 0·25 and 0·0625 M solutions. The weight of the lamellae consumed and the number and weight of fecal pellets, served as criteria of feeding stimulation. 3. 3. Sucrose, raffinose, maltose, d-fructose, melibiose and d-glucose were found to be very active as phagostimulants. 4. 4. The survival of larvae which had fed on sugar-treated Styropor for 3 days was the longest on sucrose, maltose, glucose, fructose, raffinose and melezitose. 5. 5. Some of the sugars were assayed in pairs in different choice and no-choice experiments; no antagonistic or inhibitory effects were found. © 1972.
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