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פותח על ידי קלירמאש פתרונות בע"מ -
Pyrethroid synergism by esterase inhibition in Spodoptera littoralis (Boisduval) larvae
Year:
1983
Source of publication :
Crop Protection
Authors :
אשר, קורט רודולף
;
.
ישעיה, יצחק
;
.
Volume :
2
Co-Authors:
Ishaaya, I., Division of Entomology, The Volcani Center, ARO, Bet Dagan 50-250, Israel
Ascher, K.R.S., Division of Toxicology, The Volcani Center, ARO, Bet Dagan 50-250, Israel
Casida, J.E., Pesticide Chemistry and Toxicology Laboratory, Department of Entomological Sciences, University of California, Berkeley, CA 94720, United States
Facilitators :
From page:
335
To page:
343
(
Total pages:
9
)
Abstract:
The susceptibility of cotton leafworm, Spodoptera littoralis (Boisduval) larvae to poisoning by trans-permethrin and cis-cypermethrin was increased when these pyrethroids were applied topically after the larvae had ingested profenofos, monocrotophos or azinphos-methyl for 24 h. An ingested dose of 4 nmol profenofos per larva gave a synergism factor of about threefold for both trans-permethrin and cis-cypermethrin. These pyrethroids were not synergized by oxidase inhibitors such as piperonyl butoxide, SV-1 and MPP ingested at 80 nmol/larva. Esterase preparations of larval gut hydrolysed trans-permethrin two to three times more rapidly than cis-permethrin, deltamethrin, trans- or cis-cypermethrin. Integument esterase(s) are less active but show a similar preference for trans-permethrin. The gut esterase(s) hydrolysing trans-permethrin are more sensitive in vitro and in vivo to inhibition by profenofos than by azinphos-methyl or monocrotophos. The susceptibility of S. littoralis larvae to pyrethroids appears to be limited by pyrethroid esterases in the gut. Organophosphorous compounds inhibiting these detoxifying enzymes serve as synergists. © 1983.
Note:
Related Files :
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/0261-2194(83)90007-8
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23167
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:57
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Scientific Publication
Pyrethroid synergism by esterase inhibition in Spodoptera littoralis (Boisduval) larvae
2
Ishaaya, I., Division of Entomology, The Volcani Center, ARO, Bet Dagan 50-250, Israel
Ascher, K.R.S., Division of Toxicology, The Volcani Center, ARO, Bet Dagan 50-250, Israel
Casida, J.E., Pesticide Chemistry and Toxicology Laboratory, Department of Entomological Sciences, University of California, Berkeley, CA 94720, United States
Pyrethroid synergism by esterase inhibition in Spodoptera littoralis (Boisduval) larvae
The susceptibility of cotton leafworm, Spodoptera littoralis (Boisduval) larvae to poisoning by trans-permethrin and cis-cypermethrin was increased when these pyrethroids were applied topically after the larvae had ingested profenofos, monocrotophos or azinphos-methyl for 24 h. An ingested dose of 4 nmol profenofos per larva gave a synergism factor of about threefold for both trans-permethrin and cis-cypermethrin. These pyrethroids were not synergized by oxidase inhibitors such as piperonyl butoxide, SV-1 and MPP ingested at 80 nmol/larva. Esterase preparations of larval gut hydrolysed trans-permethrin two to three times more rapidly than cis-permethrin, deltamethrin, trans- or cis-cypermethrin. Integument esterase(s) are less active but show a similar preference for trans-permethrin. The gut esterase(s) hydrolysing trans-permethrin are more sensitive in vitro and in vivo to inhibition by profenofos than by azinphos-methyl or monocrotophos. The susceptibility of S. littoralis larvae to pyrethroids appears to be limited by pyrethroid esterases in the gut. Organophosphorous compounds inhibiting these detoxifying enzymes serve as synergists. © 1983.
Scientific Publication
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