Seasonal dispersal and diversity of aphid species were monitored on pepper farms in St. Catherine, Jamaica throughout 1998 and 1999 to identify the most likely vectors of tobacco etch virus (TEV) in pepper Þelds. Flight activitywasmonitoredweekly on Þve farms usingwater pan traps. More than 30 aphid species were identiÞed, 12 of which are new records for Jamaica. Ninety-two percent of the aphid...

شته جالیز Aphis gossypii Glover یکی از آفات مهم و خسارت‌زا با پراکنش گسترده دامنه میزبانی وسیع در مزارع گلخانه‌ها به‌شمار می‌آید. مدیریت رایج به استفاده حشره‌کش‌های شیمیایی منظور جلوگیری خسارت اقتصادی وابسته است. مطالعه حاضر، غلظت‌های کشنده زیرکشنده فلونیکامید دی‌کلرووس طریق زیست‌سنجی برآورد شد تاثیر (LC10 LC25) هر یک آنها روی فراسنجه‌های جدول زندگی شرایط گلخانه‌ای لوبیا چیتی بررسی شد. توجه تأث...

There are several typographical errors in this article. In the legends of Figures 3 and 4, ‘‘(6 . 1 SE)’’ should read ‘‘(1 SE)’’. In the Methods, Plants and Pets subsection, ‘‘(of C. sinensis . Camellia sinensis)’’ should read ‘‘(of Camellia sinensis)’’; ‘‘(Aphis gossypii.A. gossypii)’’ should read ‘‘(A. gossypii)’’; ‘‘(15. 22uC, 606 10%RH, 13. 16-h photoperiod)’’ should read ‘‘(22uC, 60 6 10% ...

BACKGROUND The species-rich genus Aphis consists of more than 500 species, many of them host-specific on a wide range of plants, yet very similar in general appearance due to convergence toward particular morphological types. Most species have been historically clustered into four main phenotypic groups (gossypii, craccivora, fabae, and spiraecola groups). To confirm the morphological hypothese...

The cotton aphid, Aphis gossypii Glover (Hemiptera Aphididae), is one of the most important sap sucking pests in many cotton-growing areas world-wide. In this study, the efficacies of seven insecticides [organophosphate (Fenitrothion & Pirimiphos-methyl), carbamate (Carbosulfan & Aldicarb), pyrethroid (Lambda-Cyhalothrin & Deltamethrin) and imidaclopride (Confidor)] were determined against four...

The impact of pests and diseases on agricultural crops has been amplified due to global environmental changes, resulting in an estimated adverse effect 1.4 trillion dollars, which is approximately 5% the world's gross domestic product. Research was conducted various species parasitic entomophages, such as Aphidius matricaria Hal, gifuensis Ashm, Lysiphlebus japonica Tokawa, ervi fabarum Marsh, ...

the toxicity of imidacloprid and pirimicarb for all stages of the melon aphid, aphis gossypii glover, were investigated under laboratory conditions (25 ± 1 oc, 65 ± 5% r.h. and a photoperiod of 16:8 (l: d) h.) using a leaf dipping method. these pesticides were very toxic for first instar nymphs of a. gossypii with lc50 values of 17 and 220.2 ppm for imidacloprid and pirimicarb, respectively. fo...

BACKGROUND RNA interference (RNAi) is an effective tool to examine the function of individual genes. Carboxylesterases (CarE, EC 3.1.1.1) are known to play significant roles in the metabolism of xenobiotic compounds in many insect species. Previous studies in our laboratory found that CarE expression was up-regulated in Aphis gossypii (Glover) (Hemiptera: Aphididae) adults of both omethoate and...

Tests were conducted to determine if age of mass reared adult female Mediterranean fruit flies, Ceratitis capitata (Wiedemann), affected the viability of their offspring. Samples of eggs (0.4 g each) were collected on five consecutive days (4 to 8 d past adult emergence) from individual 660-liter adult colony screen cages and were reared in separate trays containing 0.5 liter of artificial diet...