نتایج جستجو برای: penaeus semisulcatus
تعداد نتایج: 2059 فیلتر نتایج به سال:
Vibrio harveyi siphophage 1 (VHS1) is a tailed phage with an icosahedral head of approximately 66 nm in diameter and an unornamented, flexible tail of approximately 153 nm in length. When Vibrio harveyi 1114GL is lysogenized with VHS1, its virulence for the black tiger shrimp (Penaeus monodon) increases by more than 100 times, and this coincides with production of a toxin(s) associated with shr...
زمینه: انباشتگی فلزات سنگین که در اثر فاضلاب‌های صنعتی، شهری و کشاورزی به‌وجود می‌آیند معمولاً در مقابل تصفیه شیمیایی مقاوم می‌باشند. این‌گونه فلزات به‌راحتی می‌توانند باعث آلودگی زیست محیطی آبزیان به‌خصوص میگوها شوند که یکی از مهم‌ترین زنجیره غذایی انسان‌ها محسوب می‌شوند. هدف از این مطالعه، بررسی غلظت فلزات سنگین از جمله سرب، کادمیوم، روی، مس و جیوه در میگوهای دریایی و پرورشی آب‌های سواحل استان...
The lack of a standardised system for the isolation, identification and purification of prawn viruses, is a major obstacle to the control of viruses in penaeid aquaculture. To date, spontaneous and induced transformation of somatic penaeid cells has failed. Hybrid cells with the aim of supporting the growth of penaeid viruses were created using polyethylene glycol (PEG)-mediated fusion with two...
BACKGROUND Enterocytozoon hepatopenaei (EHP) causes hepatopancreatic microsporidiosis (HPM) in shrimp. It is probably endemic in Australasia and was first characterized and named from the giant or black tiger shrimp Penaeus monodon from Thailand in 2009. Later, it was also found to infect exotic Penaeus vannamei imported for cultivation in Asia. HPM is not normally associated with shrimp mortal...
Three isotrypsins from digestive gland of Penaeus vannamei were purified and characterized by molecular, biochemical and kinetic parameters. Purified isotrypsins A, B, and C are glycoproteins with molecular masses between 30.2 and 32.9 kDa, and, therefore similar to other trypsins. The isoelectric points are anionic and different among the three isotrypsins: pH 3.5 for isotrypsin A, pH 3.0 for ...
The reproduction of the karamote prawn, Penaeus (Melicertus) kerathurus (Forskål 1775), was studied for the native population in Amvrakikos Gulf (Ionian Sea; western Greece). Sampling was carried out on a monthly basis between June 1999 and May 2001. The results showed that the shrimp Penaeus (Melicertus) kerathurus reproduction period spans between late April and late September. The size-at-ma...
The present study examined the influences of industrial chitin extraction processes on the residual oxytetracycline (OTC) and oxolinic acid (OA) in shrimp carapaces and shells. The drugs were orally administered by catheter to the kuruma shrimp (Penaeus japonicus) and vannamei shrimp (Penaeus vannamei). The shrimps were sampled at 6-h post-dosing and their carapaces and shells were collected an...
زمینه مطالعه: شناسایی ژنتیکی ذخایر گونه های مهم و اقتصادی میگو های منطقه خلیج فارس از اولویت های مهم در جهت یافتن منابع طبیعی و بکر در جهت اطمینان از به گزینی و فاصله ژنتیکی بین جمعیت هامی باشد. هدف: در این پژوهش بررسی جمعیت و تعیین میزان تنوع ژنتیکی گونه میگوی موزی (penaeus merguiensis) مورد مطالعه قرار گرفت . روش کار: نمونه برداری در 3 منطقه پراکنش این گونه ( بندرگواتر، اطراف جزیره هرمز و بن...
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