نتایج جستجو برای: metaschistura cristata
تعداد نتایج: 413 فیلتر نتایج به سال:
A partial mRNA sequence was identified from Celosia cristata purified leaf mRNA population at the early vegetative stage. Based on its deduced amino acid sequence analysis, it was predicted to encode a homologue of Herpes UL31 protein superfamily in test plant. The bacterial origin of the isolated fragment was eliminated on the basis of some experimental evidences. Since the cloned mRNA fragmen...
This review critically evaluates the available mercury (Hg) data in Arctic marine biota and the Inuit population against toxicity threshold values. In particular marine top predators exhibit concentrations of mercury in their tissues and organs that are believed to exceed thresholds for biological effects. Species whose concentrations exceed threshold values include the polar bears (Ursus marit...
The polypeptide chain composition and the chemical properties of several annelid hemoglobins and chlorocruorins are presented. In agreement with earlier studies on the hemoglobin from Arenicola cristata (Waxman, L. (1971) J. Biol. Chem. 246, 7318-7327), nearly all of the pigments which have been examined consist of one or more different disulfide-linked polypeptide chains of 13,000 to 16,000 da...
Japanese species of the genus Netelia of the subgenus Bessobates are revised. Fourteen species are recognized. Four new species, N. (B.) longipad, N. (B.) nigridorsalis, N. (B.) nodai and N. (B.) yakushimensis, are described. Six species, N. (B.) comitor Tolkanitz, 1974, N. (B.) frenata Tolkanitz, 1981, N. (B.) gansuana (Kokujev, 1906), N. (B.) kiuhabona (Uchida, 1928), N. (B.) nanaki Kaur & Jo...
بررسی پراکنش و فراوانی ماکروبنتوزهای تالاب انزلی با نمونهبرداری در چهار ایستگاه در بخش سیاهکشیم انجام شد. برداشت نمونههای کفزیان درشت، از بهار تا زمستان 85 با استفاده از نمونهبردار چنگهای (ونوین گرب با سطح 250 سانتیمترمربع با سه تکرار بهصورت فصلی انجام شد. همچنین عوامل محیطی مانند دانهبندی رسوبات، دما، اکسیژن محلول، pH، شوری و مواد آلی رسوبات اندازهگیری شد. ماکروفونـای جداسـازی شده، در...
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