Toxicity, Repellence, and Effects of Starvation Compared AInong Insecticidal Baits in the Laboratory for Control of AInerican and Smokybrown Cockroaches (Dictyoptera: Blattidae)

Authors: SMITH, LANE M.; APPEL, ARTHUR G.

Source: Journal of Economic Entomology, Volume 89, Number 2, April 1996 , pp. 402-410(9)

Publisher: Entomological Society of America

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Abstract:

Commercial formulations of insecticidal baits were evaluated in laboratory studies against the American cockroach, Periplaneta americana (L.), and the smokybrown cockroach, P. fuliginosa (Sen'ille). Continuous exposure toxicity tests and Ebeling choice box tests showed that these cockroach species are killed rapidly by most of the tested baits. For American cockroaches in choice boxes, the order of bait toxicity was GOLD CREST (chlorpyrifos) < COMBAT (hydramethylnon) < MAXFORCE (hydramethylnon) < RAIDMAX (su-fluramid) < COMBAT SUPER (hydramethylnon) < AVERT powder (abamectin) < IT Works (boric acid) < AVERT gel (abamectin) < dog and cat repellent (cinnamaldehyde and methyl nonyl ketone); LT50s ranged from 0.96 to 23.92 d. For smokybrown cockroaches in choice boxes, the order of bait toxicity based on LT50s was GOLD CREST < RAIDMAX < MAXFORCE < COMBAT SUPER < AVERT powder < IT Works; LT50s ranged from 1.86 to 39.20 d. In continuous exposure tests, LT50s were longer than in choice box tests. American cockroaches used in choice-boxt tests and in continuous exposure tests were more susceptible than smokybrown cockroaches. Cockroaches more readily ate all baits as a function of increasing starvation. Hungry cockroaches (starved > 18 d) consumed more than their own dry mass after 48 h exposure to several baits. Both species differed in initial percentage of body fat, but as period of starvation increased, percentage of fat decreased. Values of R, the correlation coefficient, suggested that percentage of fat might be a better indicator of the amount of bait eaten compared with the period of starvation (R = -0.86 and 0.82, respectively). GOLD CREST bait was eaten significantly less than dog food (the experimental control) by American cockroaches, and MAXFORCE was eaten significantly less than dog food by smokybrown cockroaches.

Document Type: Research Article

Publication date: April 1, 1996

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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