English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Artificial laboratory selections for resistance and susceptibility to fenpyroximate were performed in a population of the two-spotted spider mite, Tetranychus urticae Koch (green-form), collected from a commercial strawberry field in the State of Sao Paulo, Brazil, in 1999. After five selections for resistance and three selections for susceptibility, the resistance ratios (R/S) at the LC50 and LC95 reached 2,910 and 2,280, respectively. Cross-resistance relationships between fenpyroximate and eight other acaricides were evaluated using the selected susceptible and resistant strains of T. urticae. The results indicate positive cross-resistance between fenpyroximate and acaricides, pyridaben and dimethoate. No cross-resistance was detected for acaricides, propargite, abamectin, milbemectin, fenpropathrin and cyhexatin. The studies on genetics of fenpyroximate resistance indicate that the fenpyroximate resistance is controlled by one major, incompletely dominant factor. Frequencies of fenpyroximate resistance decline significantly in the absence of selection pressure, under laboratory conditions, however, the rate of decline is not high.

applied entomology and zoology

Selections for fenpyroximate resistance and susceptibility, and inheritance, cross-resistance and stability of fenpyroximate resistance in Tetranychus urticae Koch (Acari: Tetranychidae)