caa a22 4500 388092874 CHVBK 20180307125256.0 cr unu---uuuuu 161130e199908 xx s 000 0 eng 10.4039/Ent131433-4 doi S0008347X0001004X pii (NATIONALLICENCE)cambridge-10.4039/Ent131433-4 EFFECT OF BACILLUS THURINGIENSIS ON FEEDING AND ENERGY USE BY PLODIA INTERPUNCTELLA (LEPIDOPTERA: PYRALIDAE) AND TRIBOLIUM CASTANEUM (COLEOPTERA: TENEBRIONIDAE) [Elektronische Daten] Investigations were conducted to quantify the effects of treatment of cracked wheat, Triticum aestivum L. (Gramineae), kernels with sublethal and median-lethal concentrations of Bacillus thuringiensis Berliner 1915 (Eubacteriales: Bacillaceae) on the energy use by Plodia interpunctella (Hübner) 1813 and Tribolium castaneum (Herbst) 1797 larvae. Cumulative food consumption and egestion during insect development and the weight and energy values of adult insects were determined and oxygen consumption was estimated. At sublethal (4 μg/g wheat for P. interpunctella, 250 μg/g wheat for T. castaneum) and median-lethal (18 μg/g wheat for P. interpunctella, 1950 μg/g wheat for T. castaneum) concentrations, food consumption during development decreased from controls by 9.1% and 47.1%, respectively, for P. interpunctella and 14.4% and 38.2%, respectively, for T. castaneum. Egestion decreased by 9.5% and 61.5% for P. interpunctella and 19.4% and 47.3% for T. castaneum at these respective concentrations. Increasing B. thuringiensis had negative effects on food consumption and energy use by the insects. Levels of B. thuringiensis lower than required for complete control may assist in protecting grain from stored-product insects. Copyright © Entomological Society of Canada 1999 Abdel-Razek A.S. National Research Centre, Department of Pest and Plant Protection, Dokki, Cairo, Egypt Salama H.S. National Research Centre, Department of Pest and Plant Protection, Dokki, Cairo, Egypt White N.D.G. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9 Morris O.N. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9 The Canadian Entomologist Cambridge University Press 131/4(1999-08), 433-440 0008-347X 131:4<433 1999 131 TCE https://doi.org/10.4039/Ent131433-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131433-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Abdel-Razek A.S. National Research Centre, Department of Pest and Plant Protection, Dokki, Cairo, Egypt NATIONALLICENCE 700 1- Salama H.S. National Research Centre, Department of Pest and Plant Protection, Dokki, Cairo, Egypt NATIONALLICENCE 700 1- White N.D.G. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9 NATIONALLICENCE 700 1- Morris O.N. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/4(1999-08), 433-440 0008-347X 131:4<433 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge