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Titolo:
Pyrethroid resistance and cross-resistance in the German cockroach, Blattella germanica (L)
Autore:
Wei, YP; Appel, AG; Moar, WJ; Liu, NN;
Indirizzi:
Auburn Univ, Dept Entomol & Plant Pathol, Auburn, AL 36849 USA Auburn Univ Auburn AL USA 36849 omol & Plant Pathol, Auburn, AL 36849 USA
Titolo Testata:
PEST MANAGEMENT SCIENCE
fascicolo: 11, volume: 57, anno: 2001,
pagine: 1055 - 1059
SICI:
1526-498X(200111)57:11<1055:PRACIT>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
HOUSE-FLY DIPTERA; INSECTICIDE RESISTANCE; MUSCA-DOMESTICA; DICTYOPTERA; TOXICITY; STRAINS; MUSCIDAE; FLIES; SYNERGISM; SPINOSAD;
Keywords:
insecticide resistance; cross-resistance; mechanisms; Blattella germanica;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Liu, NN Auburn Univ, Dept Entomol & Plant Pathol, 301 Funchess Hall, Auburn, AL 36849 USA Auburn Univ 301 Funchess Hall Auburn AL USA 36849 rn, AL 36849 USA
Citazione:
Y.P. Wei et al., "Pyrethroid resistance and cross-resistance in the German cockroach, Blattella germanica (L)", PEST MAN SC, 57(11), 2001, pp. 1055-1059

Abstract

German cockroach (Blatella germanica (L)) strain, Apyr-R, was collected from Opelika, Alabama after control failures with pyrethroid insecticides. Levels of resistance to permethrin and deltamethrin in Apyr-R (97- and 480-fold, respectively, compared with a susceptible strain, ACY) were partially or mostly suppressed by piperonyl butoxide (PBO) and S,S,S,-tributylphosphorotrithioate (DEF), suggesting that P450 monooxygenases and hydrolases are involved in resistance to these two pyrethroids in Apyr-R. However, incomplete suppression of pyrethroid resistance with PBO and DEF implies that one or more additional mechanisms are involved in resistance. Injection, compared with topical application, resulted in 43- and 48-fold increases in toxicity of permethrin in ACY and Apyr-R, respectively. Similarly, injection increased the toxicity of deltamethrin 27-fold in ACY and 28-fold in Apyr-R. These data indicate that cuticular penetration is one of the obstacles for the effectiveness of pyrethroids against German cockroaches. However, injection did not change the levels of resistance to either permethrin or deltamethrin, suggesting that a decrease in the rate of cuticular penetration may not play an important role in pyrethroid resistance in Apyr-R. Apyr-R showedcross-resistance to imidacloprid, with a resistance ratio of 10. PBO treatment resulted in no significant change in the toxicity of imidacloprid, implying that P450 monooxygenase-mediated detoxication is not the mechanism responsible for cross-resistance. Apyr-R showed no cross-resistance to spinosad, although spinosad had relatively low toxicity to German cockroaches compared with other insecticides tested in this study. This result further confirmed that the mode of action of spinosad to insects is unique. Fipronil, a relatively new insecticide, was highly toxic to German cockroaches, and the multiresistance mechanisms in Apyr-R did not confer significant cross-resistance to this compound. Thus, we propose that fipronil could be a valuable tool in integrated resistance management of German cockroaches. (C) 2001Society of Chemical Industry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 06:39:16