نتایج جستجو برای: ostertagia occidentalis
تعداد نتایج: 2418 فیلتر نتایج به سال:
ویروس حلقه زرد گوجه فرنگی از گروه توسپوویروس ها در سال 2005 برای اولین بار از مزارع ورامین شناسایی و معرفی شد. این ویروس مانند سایر توسپوویروس ها توسط تریپس ها منتقل می شود. تا به امروز فقط thrips tabaci به عنوان ناقل جدایه سینره این گونه (tyrv-ci) گزارش شده است. در این پژوهش توانایی انتقال ویروس حلقه زرد گوجه فرنگی جدایه سینره (tyrv-ci) توسط frankliniella occidentalis و مقایسه راندمان انتقال آ...
Seasonal density of trichostrongylid nematode larvae was investigated on a pasture used for communal grazing of livestock, using standard procedure of pasture larval count. For this purpose, herbage samples were collected from a posture near Faisalabad at fortnightly intervals over a 12 month period from July 2000 to June 2001. The larvae of Haemonchus (H) contortus, Trichostrongylus species, O...
پژوهش پیشرو به‌منظور بررسی تغییرات بیوشیمیایی و فیزیولوژیکی نونهالهای سه گونه اکالیپتوس (Eucalyptus camaldulensis Dehnh.، E. microtheca F. Muell و E. occidentalis Endl.) در پاسخ به سمیت سرب انجام شد. بذرها در گلدانهای حاوی سنگریزه کشت شدند و توسط محلول غذایی آبیاری شدند. پس از گذشت 10 هفته، نونهالهای اکالیپتوس در معرض تیمارهای نیترات سرب (صفر، 50، 100 و 200 میلی‌مولار) به مدت 10 ماه قرار ...
The appearance of variations in the protein profile of Ostertagia ostertagi (Stiles, 1892) infective larvae (L3), which were induced by hypobiosis triggering factors, was evaluated by means of SDS-PAGE and densitometric analysis. Area integration analyses of their protein profiles was carried out between 66 and 77 kDa. Important quantitative variations were identified in the protein levels of t...
Worm-free Merino yearlings were dosed with either a mixture of infective larvae of Trichostrongylus axei and Ostertagia circumcincta or with O. circumcincta only, and challenged 90-93 days later with infective larvae of Haemonchus contortus. Neither of these methods protected sheep against challenged and slight protection was afforded sheep predosed with T. axei and O. circumcincta and challeng...
Thrips is one of the most harmful insect groups attacking many field and vegetable crops. Predatory mites, especially those in family Phytoseiidae, are considered as good bioagents to control thrips where application of chemical pesticides can be decreased. This work was conducted to evaluate the efficacy of the two phytoseiid mites, Amblyseius swirskii (Athias-Henriot) and Neoseiulus cucumeris...
Regeneration success of canopy dominants is linked to multiple factors, including the ability of their seedlings to survive browsing and to utilize available resources in the understory. In remnant upland northern white cedar Thuja occidentalis L. forests, eects of browsing on recruitment of cedar seedlings were evaluated at 7 sites, including known deer yards, located on a portion of the Lake...
Orius sauteri (Poppius; Hemiptera: Anthocoridae) is an important predator of western flower thrips, Frankliniella occidentalis (Pergande; Thysanoptera: Thripidae). O. sauteri would be directly exposed to the entomopathogenic fungus Beauveria bassiana (Bals.) Vuillemin in the field should the fungus be used as a biopesticide. If the fungus were to negatively affect O. sauteri in agro-ecosystems,...
Background & Objectives. The plan of this work was to study the larvicidal activity of Cassia occidentalis (Linn.) against the larvae of Culex quinquefasciatus. These larvae are the most significant vectors. They transmit the parasites and pathogens which cause a deadly disease like filariasis, dengue, yellow fever, malaria, Japanese encephalitis, chikungunya, and so forth, which are considered...
Rickettsia philipii (type strain "Rickettsia 364D"), the etiologic agent of Pacific Coast tick fever (PCTF), is transmitted to people by the Pacific Coast tick, Dermacentor occidentalis. Following the first confirmed human case of PCTF in 2008, 13 additional human cases have been reported in California, more than half of which were pediatric cases. The most common features of PCTF are the prese...
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