Synthesis and Evaluation of the Naturally Occurring Phototoxin Alpha-terthienyl as a Control Agent for Larvae of Aedes intrudens, Aedes atropalpus (Diptera: Culicidae) and Simulium verecundum (Diptera: Simuliidae)
Authors: Philogene, B. J. R.; Arnason, J. T.; Berg, C. W.; Duval, F.; Champagne, D.; Taylor, R. G.; Leitch, L. C.; Morand, P.
Source: Journal of Economic Entomology, Volume 78, Number 1, February 1985 , pp. 121-126(6)
Publisher: Entomological Society of America
Abstract:New methods to synthesize alpha-terthienyl (α-T) on a large scale have permitted field and laboratory evaluation of this naturally occurring phototoxin from plants for blackfly and mosquito control. The acute toxicity of α-T to blackfly larvae (Simultum verecundum Stone and Jamnback) was LC50 = 28 ppb and LC90 = 70 ppb. In field trials effective control of third- and fourth-instar larvae of Aedes intrudens Dyar was achieved with application of 0.1 kg/ha to natural breeding pools. Similar results were found in simulated pool trials conducted under more controlled conditions with laboratory-reared Aedes atropalpus Coquillett larvae. Alpha-terthienyl is not persistent, with a half-life of -4 h in sunhght. The results suggest possible use of the phototoxin for mosquito control.
Document Type: Research Article
Publication date: February 1, 1985
- 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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