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פותח על ידי קלירמאש פתרונות בע"מ -
Managing resistance to the insect growth regulator, pyriproxyfen, in Bemisia tabaci
Year:
1999
Source of publication :
Pesticide Science
Authors :
הורוביץ, רמי
;
.
ישעיה, יצחק
;
.
מנדלסון, זמירה
;
.
Volume :
55
Co-Authors:


Cahill, M.
Denholm, I.
 

Facilitators :
From page:
272
To page:
276
(
Total pages:
5
)
Abstract:
The insect growth regulator pyriproxyfen (a juvenoid) effectively inhibits the hatching of eggs of the tobacco or cotton whitefly, Bemisia tabaci, as well as causing pupal mortality. Since 1991, this insecticide has been one of the main agents for controlling B tabaci on Israeli cotton. Seasonal trends of susceptibility to pyriproxyfen in field populations were monitored from June (prior to treatment) through late summer at different locations in Israel. After seven years of pyriproxyfen use within an insecticide resistance management strategy that limits this insecticide to a single application per season, susceptibility has been maintained in many areas. In other locations where pyriproxyfen had been used against geographically isolated populations of B tabaci, moderate to high levels of resistance have been observed. Ecological and agronomic factors that may contribute to geographical variation in selection for resistance are discussed. The dynamics of pyriproxyfen-susceptible and -resistant populations of B tabaci following a single application of pyriproxyfen were investigated under simulated field conditions in the laboratory. The susceptible population was suppressed very effectively, whereas effects of pyriproxyfen against the resistant population were much more transient. Differences in the productivity of susceptible and resistant strains in the absence of pyriproxyfen treatment could reflect a fitness cost accounting for observed reductions in resistance levels between seasons in the field. They may also explain why, following a recent reduction in the use of pyriproxyfen in cotton fields, resistance in 1998 declined to levels observed in 1995/6.
Note:
Related Files :
Aleyrodidae
Bemisia tabaci
Conference paper
insecticide resistance
Israel
pesticide resistance
Pyriproxyfen
Seasonal Variation
עוד תגיות
תוכן קשור
More details
DOI :
10.1002/(SICI)1096-9063(199903)55:3<272::AID-PS908>3.0.CO;2-Y
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר מתוך כינוס
;
.
Language:
אנגלית
Editors' remarks:
ID:
27825
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:34
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Scientific Publication
Managing resistance to the insect growth regulator, pyriproxyfen, in Bemisia tabaci
55


Cahill, M.
Denholm, I.
 

Managing resistance to the insect growth regulator, pyriproxyfen, in Bemisia tabaci
The insect growth regulator pyriproxyfen (a juvenoid) effectively inhibits the hatching of eggs of the tobacco or cotton whitefly, Bemisia tabaci, as well as causing pupal mortality. Since 1991, this insecticide has been one of the main agents for controlling B tabaci on Israeli cotton. Seasonal trends of susceptibility to pyriproxyfen in field populations were monitored from June (prior to treatment) through late summer at different locations in Israel. After seven years of pyriproxyfen use within an insecticide resistance management strategy that limits this insecticide to a single application per season, susceptibility has been maintained in many areas. In other locations where pyriproxyfen had been used against geographically isolated populations of B tabaci, moderate to high levels of resistance have been observed. Ecological and agronomic factors that may contribute to geographical variation in selection for resistance are discussed. The dynamics of pyriproxyfen-susceptible and -resistant populations of B tabaci following a single application of pyriproxyfen were investigated under simulated field conditions in the laboratory. The susceptible population was suppressed very effectively, whereas effects of pyriproxyfen against the resistant population were much more transient. Differences in the productivity of susceptible and resistant strains in the absence of pyriproxyfen treatment could reflect a fitness cost accounting for observed reductions in resistance levels between seasons in the field. They may also explain why, following a recent reduction in the use of pyriproxyfen in cotton fields, resistance in 1998 declined to levels observed in 1995/6.
Scientific Publication
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