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1 August 2001 Acoustic Surveying of Subterranean Insect Populations in Citrus Groves
R. W. Mankin, S. L. Lapointe, R. A. Franqui
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Abstract

Subterranean insect pests cause considerable economic damage but their concealment makes detection difficult. A portable acoustic system was developed and tested for its potential to rate the likelihood that trees in citrus groves were infested with Diaprepes abbreviatus (L.) larvae. The likelihood was rated independently by a computer program and an experienced listener that distinguished insect sounds from background noises. Diaprepes abbreviatus, Phyllophaga spp., or other pest insects were excavated from all 11 sites rated at high likelihood of infestation but were absent from 20 of 25 low-rated sites. There was a significant regression between the activity rate and the number of pest organisms present at recording sites although the correlation was weaker than between activity rate and likelihood of infestation. Although the system is at an early stage of development, the success of these field tests suggests that it has considerable potential as a tool to detect and monitor hidden infestations of insects in soil.

R. W. Mankin, S. L. Lapointe, and R. A. Franqui "Acoustic Surveying of Subterranean Insect Populations in Citrus Groves," Journal of Economic Entomology 94(4), 853-859, (1 August 2001). https://doi.org/10.1603/0022-0493-94.4.853
Received: 1 November 2000; Accepted: 1 March 2001; Published: 1 August 2001
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KEYWORDS
detection
Diaprepes
grubs
Phyllophaga
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