Results 171 to 180 of about 2,493 (202)

Performance of Abamectin Bait Formulations Against German Cockroaches (Dictyoptera: Blattellidae)

Journal of Economic Entomology, 1995
Commercial and experimental formulations of abamectin-based baits were evaluated in laboratory and field studies against the German cockroach, Blattella germanica (L.). In continuous exposure tests with adult males, toxicity and presumably bait consumption varied with the design of the bioassay.
A G, Appel, E P, Benson
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Nutritional Status and Insecticide Tolerance in German Cockroaches (Orthoptera: Blattellidae)

Journal of Economic Entomology, 1990
The interrelationship of two extrinsic factors-nutrition and pesticide exposure-was studied in German cockroaches, Blattella germanica (L.). Amount of dietary protein had no effect on susceptibility of male German cockroaches to propoxur and chlorpyrifos; however, the source of protein produced significant changes in insecticide susceptibility ...
R D, Kramer, P G, Koehler, R S, Patterson, F, Slansky   +3 more
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Laboratory and Field Evaluations of German Cockroach (Orthoptera: Blattellidae) Traps

Journal of Economic Entomology, 1984
In laboratory and field studies, traps were evaluated to determine effectiveness in the capture of the German cockroach, Blattella germanica (L.). Traps tested included: modified sticky (“Kuru Kuru”; Mr. Sticky), electrified cans, and bottles. Unbaited sticky traps caught significantly more cockroaches than other unbaited designs.
J B, Ballard, R E, Gold
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Abamectin Resistance Potential in the German Cockroach (Dictyoptera: Blattellidae)

Journal of Economic Entomology, 1994
Twelve field-collected populations of German cockroaches, Blattella germanica (L.), were examined for resistance to dietary abamectin at 40 ppm. Half of these populations had significantly increased resistance ratios compared with the VPI-susceptible strain, but the highest value was only 2.4. Feeding inhibition was variable but nevertheless pronounced
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New Distribution Record For Ischnoptera bilunata (Dictyoptera, Blattellidae)

1993
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Benson, Eric P., Appel, A G
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Morphogenetic Effects of Hydroprene on German Cockroaches (Orthoptera: Blattellidae)

Journal of Economic Entomology, 1989
Exposure of male German cockroaches, Blattella germanica (L.), to hydroprene produced a malformation of the left phallomere that precluded normal copulation. This effect partially explains the sterility associated with exposure to hydroprene. Other morphogenetic effects induced by exposure included inability to evert the right phallomere, incomplete ...
Richard D. Kramer, Philip G. Koehler, Richard S. Patterson   +2 more
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Oral Toxicity and Repellency of Borates to German Cockroaches (Dictyoptera: Blattellidae)

Journal of Economic Entomology, 1993
The oral toxicities of boric acid and disodium octaborate tetrahydrate (DSOBTH) in dry-mixed, wet-mixed, and water-based solution baits were determined for German cockroaches, Blattella germanica L., in choice and nonchoice experiments. In dry-mixed, nonchoice bait tests, all cockroaches died within 1 wk.
C A, Strong, P G, Koehler, R S, Patterson   +2 more
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Insecticide Resistance of Several Field-Collected German Cockroach (Dictyoptera: Blattellidae) Strains

Journal of Economic Entomology, 2017
German cockroaches, Blattella germanica (L.), remain one of the most difficult indoor insect species to control because of its ability to develop resistance to insecticides. The toxicity and resistance levels of five technical-grade insecticides (permethrin, chlorpyrifos, propoxur, imidacloprid, and fipronil) were determined for adult males of seven ...
Xiaoyan, Wu, Arthur G, Appel
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The genus Scalida Hebard (Blattaria: Blattellidae,Blattellinae) in China

Zootaxa, 2010
The blattellid cockroach genus Scalida Hebard, 1929 is revised and redefined on the basis of all species currently included in it, including generic diagnosis, evolution of taxonomy, species list, and taxonomy. Two new species are described and illustrated from China: Scalida quadrispinata and S. pyrrhocephala.
ZONGQING WANG, YANLI CHE
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Selection for Pyrethroid Resistance in the German Cockroach (Dictyoptera: Blattellidae)

Journal of Economic Entomology, 1987
A pyrethrins-susceptible and a pyrethrins-resistant strain of German cockroaches, Blattella germanica (L.), were selected with either permethrin or fenvalerate over several generations to determine if resistance would occur. Large nymphs were left on treated glass surfaces until about half were killed each generation.
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