Evaluation of Visual and Olfactory Cues for Sampling Three Thrips Species (Thysanoptera: Thripidae) in Deciduous Forests of the Northern United States

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The introduced basswood thrips, Thrips calcaratus Uzel, pear thrips, Taeniothrips inconsequens (Uzel), and native basswood thrips, Neohydatothrips tiliae (Hood), form a thrips complex that attacks buds and foliage of basswood, Tilia americana L., trees in the northern United States. We assessed the potential for exploiting visual and olfactory cues to monitor these forest thrips. We tested blue, green, red, white, and yellow for thrips’ response to visual stimuli, and anisaldehyde, ethyl nicotinate, and polar and nonpolar extracts of basswood buds or leaves for thrips’ response to olfactory stimuli over a 2-yr period. Generally, yellow traps tended to elicit the greatest visual response from all three species. None of the species showed significant attraction to the test volatiles compared with controls. The introduced basswood thrips, which is closely associated with expanding buds, was the most abundant species, and occurred earlier in the spring than the two flower- or foliage-associated species. The implications of these behaviors are discussed with respect to a forest pest monitoring program.

Keywords: host location; introduced basswood thrips; olfactory cues; pear thrips; pest monitoring; visual cues

Document Type: Research Article

DOI: http://dx.doi.org/10.1603/0022-0493-96.3.777

Publication date: June 1, 2003

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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