ASSESSMENT OF MONITORING TECHNIQUES FOR DIAPREPES ABBREVIATUS (L.) (COLEOPTERA: CURCULIONIDAE)

NIGG, H. N.

Abstract


When field-collected Diaprepes abbreviatus L. were given a choice of trap, tree or neither under young citrus trees, 27% overall chose a modified Tedders pecan weevil trap. Under mature citrus trees 56% chose the modified Tedders trap. The percentage choosing the tree was about equal; 32% in mature trees and 35% in young trees. The umbrella capture method had an overall efficiency of 65%, an average daily efficiency of 66 ± 28%, and a weevil detection efficiency of 75%. Our data indicate that the threshold and efficiency of the Tedders trap should be assessed further before recommending its use for D. abbreviatus research and monitoring. The umbrella technique may provide the D. abbreviatus population base for calculating the threshold and efficiency of the Tedders trap. This is the first comparative assessment of the efficiency of the Tedders trap and the umbrella collection technique for Diaprepes abbreviatus L. or for any insect.

Keywords


diaprepes; trap assessment; monitoring

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283