عنوان به زبان ديگر :
Lethal and side effects of the acaricides spirodiclofen and spiromesifen on the two-spotted spider mite, Tetranychus urticae Koch, and its predatory mite, Neoseiulus californicus McGregor (Acari: Phytoseiidae)
پديد آورندگان :
سرباز، سعيده دانشگاه آزاد اسلامي واحد اراك - دانشكده كشاورزي - گروه گياه پزشكي , گلدسته، شيلا دانشگاه آزاد اسلامي واحد اراك - دانشكده كشاورزي - گروه گياه پزشكي , زماني، عباسعلي دانشگاه رازي كرمانشاه - دانشكده كشاورزي - گروه گياه پزشكي , سليمان نژاديان، ابراهيم دانشگاه شهيد چمران اهواز - دانشكده كشاورزي - گروه گياه پزشكي , وفايي شوشتري، رضا دانشگاه آزاد اسلامي واحد اراك - دانشكده كشاورزي - گروه گياه پزشكي
كليدواژه :
اسپيروديكلوفن , اسپيرومسيفن , كنه تارتن دو لكهاي , Neoseiulus californicus , سميت
چكيده لاتين :
The acute toxicity of the acaricides spirodiclofen and spiromesifen to eggs and adult females of
the two-spotted spider mite, Tetranychus urticae Koch, was evaluated in laboratory at 27 ± 2°C
temperature, 70 ± 5% relative humidity (RH), and 16/8 L/D photoperiodic conditions. The residual
effects of these miticides on adult females were also assessed. In these assays, eggs and female
mites were treated with five different concentrations of the two acaricides: spirodiclofen (0.21,
0.41, 0.83, 1.63, and 3.26 mg/L) and (0.79, 3.78, 18.11, 86.87, and 416 mg/L), spiromesifen (0.02,
0.06, 0.18, 0.53, and 1.56 mg/L) (0.39, 4.07, 10.10, 51.27, and 260 mg/L) for egg and female adult
respectively. LC50 and LC90 of the chemicals were measured and the obtained data was analysed by
probit analysis. The LC50 value of spirodiclofen against egg and adult of T.urticae were 0.86, 11.95
and for spiromesifen were 0.10, 5.95 ppm respectively. Also the effects of the two acaricide
residues on mortality rate of female spider mites and its predatory mite, Neoseiulus californicus
McGregor, were investigated at LC90 level following 0, 1, 3, 7, 10 and 14 days’ of treatment. at The
results showed that the mortality of mites increased significantly with increasing acaricide
concentrations. Generally, both acaricides, especially spiromesifen, proved to be highly toxic to
eggs, moderately to adult females, and slightly to predatory female mites. After seven days of
treatment, mortality in mites caused by spirodiclofen and spiromesifen were 86.6% and 70%, and
after two weeks, were 46.6% and 51.6%, respectively. After two weeks of treatment, acaricides had
gained efficient control against two-spotted spider mites and did not have a significant negative
effect on the population of N. californicus. The results suggest that both spirodiclofen and
spiromesifen could be successfully used for an IPM programme acco pany with the biological
control agent, N. californicus.