ARCHIVES
VOL. 9, ISSUE 9 (2024)
Potency, persistance and resistance development of a pyrethriod compound against two species of fruit flies (Diptera: Tephritidae)
Authors
Faten AA Badr, Mai K Daif, AMZ Mosallam
Abstract
In this study, the efficiency of
alpha-cypermethrin (Super-alpha 10% EC) against B. zonata and C. capitata adults
was evaluated. Results indicated that mortality percentages increased with the
increment of concentrations. Mortality percentages ranged between 34.5 - 92.35
in case of B. zonata adults and 42.55
- 94.8 in case of C. capitata. Ceratitis capitata adults were more
susceptible to the tested insecticide than B.
zonata ones. Degradation rate of alpha-cypermethrin (Super-alpha 10%EC) in
two types of soil (sand and sandy-clay) was trio-interval bioassayed against
the full grown larvae of the two species of fruit flies. The full grown larvae
of C. capitata highly affected with
all used concentrations of the tested toxicant in sand than in sandy-clay soil.
All tested concentrations showed high significantly effectiveness in sand
throughout two weeks of treatment, especially with 2000 and 3000 ppm which
significantly recorded high % mortality in sandy soil for long periods that
reduced from 97.77 to 48.87 and from 100 to 62.20 for 0- to 15-day intervals,
respectively. Whereas, in case of sandy clay soil all concentrations showed
very low efficiency against C. capitata mature
larvae throughout all trio-inspected intervals (0-21 days) with low mortality
percentages. Also, mortality percentages in case of Bactrocera zonata pre-pupae gradually reduced with time. The
mortality percentage for 3000 ppm (in sand) recorded 97.8 at zero time that
reduced to 76% after 12 days of treatment. But, the activity for 2000 ppm was
88.33% mortality at zero time which decreased to 62.2% after 9 days of
application. The two highest tested concentrations stayed effective till 15
days after treatment. It was found that highly and significantly initial
mortality of the two fruit flies in sandy and sandy clay soil at all used
concentrations. Significantly and gradual decrement in toxicity of
alphacypermethrin by time in the two types of soil at all concentrations was
observed. Efficiency of alpha-cypermethrin against the two fruit flies
disappeared after about 21 days. Generally, alpha-cypermethrin was more toxic
to pre-pupae of both B. zonata and C. capitata in sand than in sandy clay
soil. Results indicated that mortality percentages on adult progeny of both B. zonata and C. capitata of successive generations, differently and gradually
decreased with the progress of generation at all used concentrations for five
subsequent generations. Data indicated that adults of C. capitata were more susceptible than those of B. zonata. The resistance of B. zonata to alpha-cypermethrin
(Super-alpha 10% EC) was more than that recorded in case of C. capitata.
Download
Pages:78-84
How to cite this article:
Faten AA Badr, Mai K Daif, AMZ Mosallam "Potency, persistance and resistance development of a pyrethriod compound against two species of fruit flies (Diptera: Tephritidae)". International Journal of Entomology Research, Vol 9, Issue 9, 2024, Pages 78-84
Download Author Certificate
Please enter the email address corresponding to this article submission to download your certificate.