Temperature Effects on λ-Cyhalothrin Toxicity in Insecticide-Susceptible and Resistant German Cockroaches (Dictyoptera: Blattellidae)

Temperature as a toxicity identification evaluation tool for pyrethroid insecticides: Toxicokinetic confirmation

“…This trend has been observed for other pyrethroids as well. A negative temperature coefficient also has been observed in several other pest species, including cockroaches [11], tobacco budworms [19], cabbage looper [20], and potato beetle [21], with 2-to 13-fold increases in toxicity noted with approximately 10ЊC decreases in temperature. A negative temperature coefficient also has been observed in several other pest species, including cockroaches [11], tobacco budworms [19], cabbage looper [20], and potato beetle [21], with 2-to 13-fold increases in toxicity noted with approximately 10ЊC decreases in temperature.…”

“…For example, Riskallah et al [18] examined four pyrethroids, including permethrin, and found a significant increase in toxicity in cotton leaf worms at 20ЊC compared with that at 35ЊC. A negative temperature coefficient also has been observed in several other pest species, including cockroaches [11], tobacco budworms [19], cabbage looper [20], and potato beetle [21], with 2-to 13-fold increases in toxicity noted with approximately 10ЊC decreases in temperature. Aquatic species, including rainbow trout [22], Hyalella azteca [7], and mosquito larvae [23], also have a negative temperature coefficient for pyrethroids.…”

“…The U.S. Environmental Protection Agency (EPA) has not officially endorsed this publication and the views expressed herein may not reflect the views of the U.S. EPA. the toxicity of pyrethroid and organochlorine insecticides in a variety of species [8][9][10][11]. Temperature manipulation has been used as an effective method for differentiating toxicity caused by pyrethroids, chlorpyrifos, or DDT in both laboratory-spiked and field sediments [7].…”

Optimization and field use of a bioassay to monitor sea lice Lepeophtheirus salmonis sensitivity to emamectin benzoate

“…Although seasonal variations in the metabolism of other copepods have previously been documented (Siefken & Armitage 1968), the metabolic rate response of Lepeophtheirus salmonis to acclimation periods or to small differences in field and test temperatures are unknown (Tully & McFadden 2000) and there is a lack of information on temperature compensation in L. salmonis. However, previous arthropod research has shown that acclimation prior to insecticide treatment had no effect on toxicity in insecticide-susceptible and -resistant German cockroaches (Valles et al 1988). Thus, the effects of temperature on EMB toxicity of L. salmonis are evident, but mechanisms of the effect require further investigation.…”

Subsídios para o manejo da resistência de Blattella germanica (L., 1767) (Dictyoptera: Blattellidae) a inseticidas.

“…Com o inseticida lambdacialotrina, a linhagem suscetível de B. germanica exibiu um coeficiente de toxicidade de temperatura negativo (Valles et al, 1998). Este inseticida foi quase 3 vezes mais tóxico a 19ºC do que a 31ºC.…”