Electrophysiological and Behavioural Responses of Red Palm Weevil to Selected Palm Volatiles

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dc.contributor.author Pramudika, U.V.A.
dc.date.accessioned 2021-10-26T08:16:13Z
dc.date.available 2021-10-26T08:16:13Z
dc.date.issued 2014
dc.identifier.other UWU/PLT/14/0023
dc.identifier.uri http://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/7386/PLT%2014%20023-24022021122610.pdf?sequence=1&isAllowed=y
dc.description.abstract Palm weevil (RPW) Rhynchophorusferrugineus Olivier (Coleoptera: Curculionidae) is a devastating pest of coconut and other palms species in Sri Lanka and other countries. Being the conceal habitat of the pest inside the palm trunk, management of the pest is difficult and prevention of the pest damage is more important. Pheromone trap is one strategy popularizing among farmers as green pest management method. Increasing the efficiency of aggregation pheromone is a challenge. Use of responsive host volatiles for pest management is a recent trend in the field of pest management. Both electrophysiological and behavioural studies were carried out to select and formulate synergistic semiochemical formulation from six host volatiles and RPW aggregation pheromone. Electroantennogramme (EAG) test results indicated, the highest EAG response (Female: -0.8±0.05, Male: - 0.46±0.09 mV) to pentanol from both female and male. It is always higher than RPW aggregation pheromone (Female: -0.55±0.04, Male- 0.45±0.04 mV) and other tested five host volatiles. Behavioural studies indicated that, pentanol is an attractive volatile and 81 ± 3.74% attracts towards the pentanol applied coconut fronds than hexane applied fronds. Further, dose response of EAG, EAG and behaviour studies indicated that, pentanol: pheromone at 1:1 mixture gave the highest response and attraction for both female and male (Male:-0.86±0.27, Female:-0.511±0.165 mV)- among the tested mixtures of 1:1, 1:2, 1:3, 1:4, 1:5, pheromone alone and pentanol alone. Therefore, pentanol: pheromone at 1:1 formulation can be recommended for use as a semiochemical lure for RPW mass trapping after conducting mass trapping experiments in the field. Keywords: Electroantennogramme, Host plant volatiles, Mass trapping, Pheromone synergist, Red palm weevil en_US
dc.language.iso en en_US
dc.publisher Uva Wellassa University of Sri Lanka en_US
dc.relation.ispartofseries ;UWU/PLT/14/0023
dc.subject Palm and Latex Technology and Value Addition Degree Programme ( PLT) en_US
dc.title Electrophysiological and Behavioural Responses of Red Palm Weevil to Selected Palm Volatiles en_US
dc.title.alternative Research Article – PLT 2014 en_US
dc.type Thesis en_US

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