453-462 Lee CY.pmd
ثبت نشده
چکیده
To evaluate the effects of the juvenile hormone analogue pyriproxyfen on colonies of the Pharaoh ant Monomorium pharaonis (L.), peanut oil containing different concentrations (0.3, 0.6, or 0.9%) of pyriproxyfen was fed to monogynous (1 queen, 500 workers, and 0.1 g of brood) and polygynous (8 queens, 50 workers, and 0.1 g of brood) laboratory colonies of M. pharaonis. Due to its delayed activity, pyriproxyfen at all concentrations resulted in colony elimination. Significant reductions in brood volume were recorded at weeks 3 – 6, and complete brood mortality was observed at week 8 in all treated colonies. Brood mortality was attributed to the disruption of brood development and cessation of egg production by queens. All polygynous colonies exhibited significant reduction in the number of queens present at week 10 compared to week 1. Number of workers was significantly lower in all treated colonies compared to control colonies at week 8 due to old-age attrition of the workers without replacement. At least 98.67 ± 1.33% of workers were dead at week 10 in all treated colonies. Thus, treatment with slow acting pyriproxyfen at concentrations of 0.3 – 0.9% is an effective strategy for eliminating Pharaoh ant colonies.
منابع مشابه
Perceptual-motor Skills
Rules Versus Reflexlike Productions . . . . . . . . . . . . . . . . . . . . . . . . . . . 457 Neural Substrates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 458 Explicit Versus Implicit Knowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459 Individual Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
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متن کاملTable DP-1. Profile of General Demographic Characteristics: 2000 Geographic area: Houston County, Tennessee
Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 541 6.7 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 554 6.8 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 564 7.0 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 475 5.9 20 to 24 years . . . . . . . . . . . . . . . . . . . . ....
متن کامل