نتایج جستجو برای: mite egg
تعداد نتایج: 51989 فیلتر نتایج به سال:
background & aim: tetranychus urticae koch is one of the most important pests of crops, ornamental and greenhouse plants in the world and, can damage to 900 plant species. resistances to pesticides and acaricides have guided researches to introduce new methods to control t. urticae. botanical pesticides are an important group of natural productions that are usually safer than conventional p...
During years 2000 and 2001, biology and population changes of two- spotted spider mite (T. urticae) was studied on five bean cultivars of two species at 25±1ºC temp., 45±4% RH and 15: 9 (L:D) photoperiod, using leaf disks made from 2-, 6- leaf and flowering stages of the plants. The mite mass rearing was carried out on tomato plants under the same environmental conditions and the effects of fee...
The African red mite (Eutetranychus africanus [Tucker]) is an important pest species of some economic plants. objective the present study was to evaluate effectiveness nanoemulsions consisting citronella grass, lemongrass, clove, and cinnamon essential oils their main chemical compounds against mite; toxicity, egg-laying inhibition, repellent effect on were determined. Essential oil (nEOs) prep...
Ectoparasites can be significant pests for the poultry industry. The chicken (or poultry) red mite and the northern fowl mite are the most economically important ectoparasites of poultry globally. These mites can have significant deleterious effects on its fowl host including anaemia, reduced egg production, and egg quality. The chicken mites may also act as a vector for pathogens. Molecular bi...
چکیده کنه تارتن دو لکه ای tetranychus urticae koch یکی از چندخوارترین آفات شناخته شده محصولات کشاورزی دنیا به حساب می آید. در این بررسی جمعیت تخم و مراحل فعال این کنه در شرایط آلودگی طبیعی و مصنوعی در برگ های 8 رقم لوبیا در سال 1392 در گلخانه و مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه ارومیه موردمطالعه قرار گرفت. آزمایش به صورت طرح کاملاً تصادفی برای شرایط مزرعه در10 تکرار و برای شرایط گلخانه ای...
food choice in omnivorous animals is influenced by the balance of nutritional needs, food availability, and quality of a particular food items. here, we study whether omnivorous onion thrips, thrips tabaci lindeman, feed on the eggs of its competitor tetranychus urticae koch (acari: tetranychidae) when an alternative supplemental source is, or is not, available. thrips were either fed a cucumbe...
Developmental stress can alter resource allocation in early life, and in altricial birds with rapid developmental trajectories and high resource demands, nestlings may adjust early resource partitioning to cope with challenging environments. We experimentally manipulated ectoparasite levels in nests and assessed whether ectoparasites affected somatic and physiological development in European st...
Life history theory predicts that females should produce few large eggs under food stress and many small eggs when food is abundant. We tested this prediction in three female-biased size-dimorphic predatory mites feeding on herbivorous spider mite prey: Phytoseiulus persimilis, a specialized spider mite predator; Neoseiulus californicus, a generalist preferring spider mites; Amblyseius anderson...
Dermanyssus gallinae (Mesostigmata: Dermanyssidae), a mite of poultry, represents the most important ecotoparasite of egg-laying poultry in several countries. We estimated the prevalence of D. gallinae infestation in 38 industrial poultry farms (28 egg-laying and 10 reproductive hen farms) in the governorate of Nabeul (North-East Tunisia). Traps were placed in two locations of each farm during ...
During years 2000 and 2001, biology and population changes of two- spotted spider mite (T. urticae) was studied on five bean cultivars of two species at 25±1ºC temp., 45±4% RH and 15: 9 (L:D) photoperiod, using leaf disks made from 2-, 6- leaf and flowering stages of the plants. The mite mass rearing was carried out on tomato plants under the same environmental conditions and the effects of fee...
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