نتایج جستجو برای: میگوی سفید غربی litopenaeus vannamei

تعداد نتایج: 24627  

2015
Renata Albuquerque Costa Rayza Lima Araújo Oscarina Viana Souza Regine Helena Silva dos Fernandes Vieira

Antimicrobial susceptibility pattern was determined in 100 strains of Vibrio isolated from the Litopenaeus vannamei shrimp and identified phenotypically. A high antibiotic-resistance index (75%) was observed, with the following phenotypic profiles: monoresistance (n = 42), cross-resistance to β-lactams (n = 20) and multiple resistance (n = 13). Plasmid resistance was characterized for penicilli...

2015
Chaozheng Li Haoyang Li Yixiao Chen Yonggui Chen Sheng Wang Shao-Ping Weng Xiaopeng Xu Jianguo He

There is a debate on whether invertebrates possess an antiviral immunity similar to the interferon (IFN) system of vertebrates. The Vago gene from arthropods encodes a viral-activated secreted peptide that restricts virus infection through activating the JAK-STAT pathway and is considered to be a cytokine functionally similar to IFN. In this study, the first crustacean IFN regulatory factor (IR...

2013
Xiao-Yun Li Li-Ran Pang Yong-Gui Chen Shao-Ping Weng Hai-Tao Yue Ze-Zhi Zhang Yi-Hong Chen Jian-Guo He

In response to endoplasmic reticulum (ER) stress, the signaling pathway termed unfolded protein response (UPR) is activated. To investigate the role of UPR in Litopenaeus vannamei immunity, the activating transcription factor 4 (designated as LvATF4) which belonged to a branch of the UPR, the [protein kinase RNA (PKR)-like ER kinase, (PERK)]-[eukaryotic initiation factor 2 subunit alpha (eIF2α)...

Journal: :Genetics and molecular research : GMR 2015
D G Zeng X L Chen D X Xie Y Z Zhao Q Yang H Wang Y M Li X H Chen

MicroRNAs (miRNAs) are known to play an important role in regulating both adaptive and innate immunity. Pacific white shrimp (Litopenaeus vannamei) is the most widely farmed crustacean species in the world. However, little is known about the role miRNAs play in shrimp immunity. To understand the impact of viral infection on miRNA expression in shrimp, we used high-throughput sequencing technolo...

ژورنال: :پژوهش های علوم و فنون دریایی 0
علیرضا شمسی زاده گروه بیولوژی دریا، دانشکده علوم و فنون دریایی دانشگاه آزاد اسلامی واحد تهران شمال مژگان امتیازجو گروه بیولوژی دریا، دانشکده علوم و فنون دریایی دانشگاه آزاد اسلامی واحد تهران شمال مهناز سادات صادقی گروه بیولوژی دریا، دانشکده علوم و فنون دریایی دانشگاه آزاد اسلامی واحد تهران شمال محمد ربانی گروه محیط زیست دریا، دانشکده علوم و فنون دریایی دانشگاه آزاد اسلامی واحد تهران شمال

هدف از پژ‍وهش حاضر،  ارزیابی میزان فلزات سنگین (نیکل و سرب)تجمع یافته در میگو litopenaeus vannamei در مجاورت نفت خام و دو نوع پراکنده ساز ایرانی و خارجی به نام های، نفت روب و رادیوگرین osd بود. برای این منظور، یک گروه شاهد و 5 تیمار با ترکیبات و غلظت های مختلف و هر کدام با سه تکرار در نظر گرفته شد. نمونه های میگو 48 ساعت در معرض نفت خام به تنهایی و ترکیبی از نفت خام و پراکنده سازها  قرار گرفته ...

Journal: :Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology 2004
Juan Carlos Sainz Fernando L García-Carreño Patricia Hernández-Cortés

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 ...

Journal: :Genomics data 2015
Arun S Seetharam Emily Kawaler Zhi-Qiang Du Max F Rothschild Andrew J Severin

In this study, the tail muscle microbiota of pacific white shrimp (Litopenaeus vannamei) sourced from five countries across Central and South America and Southeast Asia were determined and compared. The genomic DNA was sequenced at around 10 × coverage for each geographical location and was assembled de novo for comparative analysis. The assembled sequences for all the lines were classified bas...

در این تحقیق محتویات روده میگوی پاسفید (Litopenaeus vannamei) در استخرهای خاکی در منطقه دلوار بوشهر در طی یک دوره پرورش 113 روزه با نمونه برداری در فواصل 15روز بررسی گردید. نتایج نشان داد غذای مصنوعی (کنسانتره) بیشترین درصد وزنی روده (روده‌پیشین، روده میانی و روده‌پسین) را داشت و سپس به ترتیب دتریت، زئوپلانکتون‌، فیتوپلانکتون‌ و درشت کفزیان حضور داشتند. درشت کفزیان در محتویات روده لاروها در آغا...

Journal: :FEBS letters 2012
Xianliang Zhao Lingling Guo Yueling Zhang Yao Liu Xiaoyu Zhang Jingsheng Lun Jiehui Chen Yuanyou Li

In this study, we identified a variable region in the C-terminus of hemocyanin from the shrimp Litopenaeus vannamei (2288-2503bp, HcSC) by sequence alignments. A total of 13 SNPs were identified by PCR-SSCP and HcSC clone sequencing. The SSCP patterns of HcSC could be modulated in Vibro parahaemolyticus-treated shrimps. A novel SSCP band with four SNP sites was identified in V. parahaemolyticus...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2008
F Abrunhosa M Melo

The development of the foregut structure and the digestive function of the decapods Litopenaeus vannamei, Sesarma rectum and Callichirus major larvae and post larvae were examined. The protozoeal foregut of L. vannamei is simple, lacking a cardiopyloric valve and bearing a rudimentary filter press. In mysis, the filter press is more developed. In the juvenile stage, grooves and a small lateral ...

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