نتایج جستجو برای: its2
تعداد نتایج: 1628 فیلتر نتایج به سال:
Molecular identification and genotyping of entomopathogenic nematodes (EPNs) are prerequisites for their proper classification, biodiversity studies, and their potential use in biological control programs. In Palestine, although several isolates of EPNs have been collected, phenotypically characterized, and assessed for their tolerance to cold and heat stresses, the molecular identification and...
Psocids are important stored product pests found worldwide that can be spread through grain trade. Most stored-product psocids, including eggs, nymphs, and adults, are very small (~1 mm) and difficult to identify morphologically. Here, we collected 10 economically important stored-product Liposcelis spp. psocids (L. bostrychophila, L. entomophila, L. decolor, L. paeta, L. brunnea, L. corrodens,...
Molecular identification of dorsal-spined larvae (DSL) from fecal samples indicates that the protostrongylid parasite Parelaphostrongylus odocoilei occupies a broader geographic range in western North America than has been previously reported. We analyzed 2,124 fecal samples at 29 locations from thinhorn sheep (Ovis dalli dalli and O. d. stonei), bighorn sheep (Ovis canadensis canadensis and O....
The mitochondrial cytochrome oxidase I gene (mtCO1) and the ribosomal internal transcribed spacer 2 region (ITS2) are among the most widely used molecular markers for insect taxonomic characterization. Three economically important species of thrips, Scirtothripsdorsalis, Thripspalmi, and Frankliniellaoccidentalis were selected to examine the extent of intragenomic variation within these two mar...
زیره سیاه گیاه علفی و چندساله از خانواده چتریان است و رویشگاه طبیعی آن به ایران و تعداد کمی از کشورهای همسایه محدود میشود. با هدف ارزیابی تنوع ژنتیکی زیره سیاه ایران، نه اکوتیپ این گیاه از مناطق مختلف کشور جمعآوری شد و ناحیه ITS2 و همچنین ناحیه ITS1-5.8s rRNA- ITS2 روی آنها تکثیر و تعیین توالی شد. توالیها به روش ClustalW توسط نرمافزار MegAlign همردیفسازی شده و دندروگرام روابط فیلوژنیک و...
Abstract Species of Trichogramma Westwood, 1833 (Hymenoptera: Trichogrammtidae) are frequently used as biological control agents against Lepidoptera, but practical application these egg endoparasitoids complicated because their complex taxonomy. This study aimed to compare sequences internal transcribed spacer regions ribosomal DNA (ITS2-rDNA) accessions with those deposited in GenBank order ac...
background: to identify the fasciolid species by morphometric and molecular methods in zanjan, northwest of iran. methods : adult fasciola worms (n=584) were obtained from cattle and sheep in zanjan slaughterhouse in 2007. living flukes were washed, then worms' images were taken by 3ccd camera and finally apical zone of each worm was obtained. morphometric values such as body length, body widt...
background: traditionally, morphological features of rhipicephalus (boophilus) annulatus from closely-related ticks have been considered for their identification and differentiation. however, it is difficult and requires expertise in order to accurately identify and differentiate engorged female ticks and some developmental stages such as larva and nymph from other similar ticks. hence, molecul...
Examination of the humpback red snapper, Lutjanus gibbus (Perciformes: Lutjanidae), from Lizard Island off the Great Barrier Reef and Rasdhoo Atoll, Maldives revealed the presence of a new species of Lobosorchis (Digenea: Cryptogonimidae), L. polygongylus n. sp. Lobosorchis polygongylus n. sp. is distinguished from the typeand only other species, L. tibaldiae by the combination of body size, or...
DNA barcoding is a promising species identification method, but it has proved difficult to find a standardized DNA marker in plant. Although the ITS/ITS2 RNA transcript has been proposed as the core barcode for seed plants, it has been criticized for being too conserved in some species to provide enough information or too variable in some species to align it within the different taxa ranks. We ...
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