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J Econ Entomol

Title:		New Approach of Beauveria bassiana to Control the Red Palm Weevil (Coleoptera: Curculionidae) by Trapping Technique
Author(s):		Hajjar MJ; Ajlan AM; Al-Ahmad MH;
Address:		"College of Agricultural and Food Sciences, Department of Arid Land Agriculture, King Feisal University, Alhasa 31982, Saudi Arabia"
Journal Title:		J Econ Entomol
Year:		2015
Volume:		20150202
Issue:		2
Page Number:		425 - 432
DOI:		10.1093/jee/tou055
ISSN/ISBN:		0022-0493 (Print) 0022-0493 (Linking)
Abstract:		"This work is the first study to investigate the efficacy of the commercial formulation of Beauveria bassiana (Broadband) to control adults of red palm weevil (Rhynchophorus ferrugineus (Olivier)). This fungus could be applied as one of the biological tactics in controlling red palm weevil. Bioassay experiments for medium lethal concentrate and medium time to cause death of 50% of red palm weevil adults were carried out. The result showed that the LC50 of B. bassiana (Broadband) was 2.19x10(7) and 2.76x10(6) spores/ml at 9 and 23 d of treatment, respectively. The LT50 was 13.95 and 4.15 d for concentration of 1x10(7) and 1x10(8) spores/ml, respectively, whereas 1x10(9) spores/ml caused 100% mortality after 24 h. Additionally, a red palm weevil pheromone trap was designed to attract the adults to be contaminated with spores of Broadband, which was applied to the sackcloth fabric that coated the internal surfaces of the bucket trap. The mating behavior was studied to determine direct and indirect infection of the spores from male to female and vice versa. The results showed a high efficacy of Broadband suspension at 1x10(9) spores/ml; 40 ml of suspension at this concentration treated to cloth in a trap caused death of contaminated adults with B. bassiana spores directly and indirectly. The 100% mortality was obtained even after 13 d of traps treatment with 40 ml of the suspension at 1x10(9) spores/ml"
Keywords:		"Animals *Beauveria Female Insect Control/*methods Lethal Dose 50 Male *Pest Control, Biological Pheromones Weevils/*microbiology Beauveria bassiana Lc50 Lt50 biological control red palm weevil;"
Notes:		"MedlineHajjar, M J Ajlan, A M Al-Ahmad, M H eng Evaluation Study Research Support, Non-U.S. Gov't England 2015/10/16 J Econ Entomol. 2015 Apr; 108(2):425-32. doi: 10.1093/jee/tou055. Epub 2015 Feb 2"