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Monitoring and mass-trapping methodologies using pheromones: the lesser date moth Batrachedra amydraula

Published online by Cambridge University Press:  11 May 2017

A. Levi-Zada*
Affiliation:
Institute of Plant Protection, Agricultural Research Organization, Volcani Center, Rishon LeZion 7505101, Israel
A. Sadowsky
Affiliation:
Southern Arava Research and Development, Eilot 88820, Israel
S. Dobrinin
Affiliation:
Ministry of Agriculture, Extension Service, Bet Dagan 50250, Israel
T. Ticuchinski
Affiliation:
Southern Arava Research and Development, Eilot 88820, Israel
M. David
Affiliation:
Institute of Plant Protection, Agricultural Research Organization, Volcani Center, Rishon LeZion 7505101, Israel
D. Fefer
Affiliation:
Institute of Plant Protection, Agricultural Research Organization, Volcani Center, Rishon LeZion 7505101, Israel
E. Dunkelblum
Affiliation:
Institute of Plant Protection, Agricultural Research Organization, Volcani Center, Rishon LeZion 7505101, Israel
J.A. Byers
Affiliation:
Faculty of Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel
*
*Author for correspondence Phone: 972-3-9683760 Fax: 972-3-9683781 E-mail: [email protected]

Abstract

The lesser date moth (LDM) Batrachedra amydraula is a significant pest of date palm fruits. Previously, detection and monitoring of the pest was inaccurate due to high costs of sampling with lifting machines. We report a practical system for detection and monitoring of LDM based on pheromone traps and relevant models. Dose–response experiments with LDM pheromone traps indicated a 1 mg lure is optimal for monitoring. Delta traps with adhesive covering their entire inner surface gave the highest captures while trap colour was unimportant. Sampling pheromone traps throughout the night indicated male flight began at 1:00–2:00 and reached a peak 2 h before sunrise. Monitoring traps exposed all year long in Israel revealed three generations with different abundance. Trapping transects in a date plantation indicated interference from a monitoring trap became minimal at distances >27 m away. Inter-trap distances closer than this may lower efficiency of monitoring and mass trapping in control programs. Our estimate of the circular effective attraction radius (EARc) of a 1 mg delta trap for LDM (3.43 m) shows this bait is among the most attractive compared with baits for other insects. We developed encounter-rate equations with the pheromone trap EARc to model the interplay between population levels, trap density and captures that are useful for detection of invasive LDM and its control by mass trapping. The integrated methodologies are applicable to many pest species.

Type
Research Papers
Copyright
Copyright © Cambridge University Press 2017 

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