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J Econ Entomol

Title:		Improvements in Rhynchophorus ferrugineus (Coleoptera: Dryophthoridae) Trapping Systems
Author(s):		Navarro-Llopis V; Primo J; Vacas S;
Address:		"Centro de Ecologia Quimica Agricola - Instituto Agroforestal del Mediterraneo. Universitat Politecnica de Valencia, Camino de Vera s/n, edificio, Valencia, Spain"
Journal Title:		J Econ Entomol
Year:		2018
Volume:		111
Issue:		3
Page Number:		1298 - 1305
DOI:		10.1093/jee/toy065
ISSN/ISBN:		1938-291X (Electronic) 0022-0493 (Linking)
Abstract:		"Improved trap efficacy is crucial for implementing control methods for red palm weevil, Rhynchophorus ferrugineus (Olivier; Coleoptera: Dryophthoridae), based on trapping systems, such as mass trapping, attract and infect or attract and sterilize techniques. Although new trap designs have been proposed and aggregation pheromone dispensers have been optimized, aspects such as the use of co-attractants (molasses) and trap placement are still not well defined and standardized. The efficacy of three concentrations of molasses and different formulations to reduce water evaporation in traps was studied in different field trials to improve trapping systems and to prolong trap servicing periods. In addition, the performance of installing groups of traps or single traps was also evaluated with the aim of improving the attracted/captured weevils ratio. Our results showed that captures increased when molasses were added at 15% to the water contained in the trap and that a thin layer of oil, created by adding 2-3% of paraffinic oil to water, was able to effectively reduce evaporation and prolong trap servicing periods. Moreover, 3.5-fold more weevils were captured when placing five traps instead of one at the same trapping point. Results obtained allow improved efficacy and may have an impact in the economic viability of trapping systems and, therefore, in integrated pest management programs"
Keywords:		Animals *Chemotaxis Female Insect Control/*methods Male Molasses/*analysis Pheromones/*pharmacology Weevils/*physiology;
Notes:		"MedlineNavarro-Llopis, Vicente Primo, Jaime Vacas, Sandra eng Research Support, Non-U.S. Gov't England 2018/03/27 J Econ Entomol. 2018 May 28; 111(3):1298-1305. doi: 10.1093/jee/toy065"