nutritional indices of the colorado potato beetle, leptinotarsa decemlineata (col.: chrysomelidae) on six potato cultivars
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Nutritional indices of the Colorado potato beetle, Leptinotarsa decemlineata (Col.: Chrysomelidae) on six potato cultivars
سوسک کلرادوی سیب زمینی، Leptinotarsa decemlineata (Say)، یکی از آفات مهم سیب زمینی در ایران و جهان است. شاخص‌های تغذیه‌ای لاروهای سن آخر این آفت روی برگ ارقام مختلف سیب زمینی (خاوران، ساوالان، لوتا، سانتا، سانته و آئولا) تحت شرایط آزمایشگاهی (دمای 1 ± 25 درجه سلسیوس، رطوبت نسبی 5 ± 65 در‌صد و دوره نوری 16 ساعت روشنایی و 8 ساعت تاریکی) بررسی شد. لاروهای پرورش‌یافته روی رقم سانته کم‌ترین کارا...
full textMorphology and ultrastructure of chemosensory sensilla of labio-maxillary complex in the Colorado potato beetle, Leptinotarsa decemlineata (Col.: Chrysomelidae), larvae
سوسک برگ‌خوار سیب‌زمینی، Leptinotarsa decemlineata (Say)، یکی از مهمترین آفات سیب‌زمینی و دیگر محصولات خانواده‌ی Solanaceae می‌باشد. نوع، تعداد و پراکندگی گیرنده‌های حسی روی پالپ‌های آرواره‌ای و لبی لارو سوسک برگ‌خوار سیب‌زمینی توسط میکروسکوپ الکترونی مطالعه شد. در مجموع تعداد 32 گیرنده‌ی حسی شامل سه نوع بازیکونیکا (basiconica)، تریکوئید (trichoid) و دیجیتیفرم (digitiform) روی پالپ‌های آرواره‌ی...
full textArtificial diets for rearing the Colorado potato beetle, Leptinotarsa decemlineata
Colorado potato beetles have been reared successfully through 12 generations on artificial diets containing either 2.5% potato leaf powder or 2.5% lettuce leaf powder/0.75% potato leaf powder. For all but one of the treatment groups, the mean duration of each of the four larval stages was between 0.8 and 1.5 days longer than the durations exhibited by control beetles that had been fed on potato...
full textVoltinism and the Induction of Aestival Diapause in the Colorado Potato Beetle, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae)
Field studies over 3 yr demonstrated that overwintering populations of the Colorado potato beetle in upstate New York and on Long Island are composed of adults from both the first and second summer generations. The two populations from the climatically different regions differ in their responses to environmental factors that influence voltinism. The critical photoperiod for aestival diapause in...
full textInfluence of fertilization on the Colorado potato beetle, Leptinotarsa decemlineata, in organic potato production.
The abundance of the Colorado potato beetle, Leptinotarsa decemlineata (Say), in organically grown potato did not change significantly in response to increasing rates of dehydrated poultry manure. However, peaks of abundance of larvae were shifted forward in time in response to the high rate of organic fertilizer. Tests using excised foliage showed that the shift was not caused by differential ...
full textLife-History Parameters of the Colorado Potato Beetle, Leptinotarsa decemlineata, on Seven Commercial Cultivars of Potato, Solanum tuberosum
The Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), is an important pest of potato, Solanum tuberosum L. (Solanales: Solanaceae), crops in the Ardabil region of Iran. In this research, the life-history parameters of L. decemlineata were investigated on seven potato cultivars, namely Agria, Aozonia, Diamant, Cosmus, Kondor, Morene, and Savalan, in a greenhous...
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Journal title:
نامه انجمن حشره شناسی ایرانجلد ۳۴، شماره ۲، صفحات ۶۱-۶۳
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