中国对虾血淋巴中的抗菌、溶菌活力与酚氧化酶活力的测定及其特性研究

以海捕中国对虾亲虾（1992年4月捕）为材料，对其血淋巴中的抗菌、溶菌活力及酚氧化酶活力进行测定，并研究经注射大肠杆菌、海洋弧菌及酵母聚糖等刺激物以后，其活性的变化规律等。结果表明，适当的免疫刺激可提高对虾自身的抗病能力、为免疫药物的研制等提供科学依据。     

有机污染对中国对虾体内外环境影响的研究

于１９９４－１９９５年分二批人工配合饵料作为有机污染源，进行有机污染对中国对虾体内外环境影响的研究，结果表明：１．经１０ｄ，试验池水中的ＤＯ含量明显降低，而ＣＯＤＮＨ３－Ｎ，ＮＯ２－Ｎ等迅速增加，分别是对照的２．５，２．１，１１．３倍，Ｈ２Ｓ含量轻２８ｄ后为对照组２．１倍，同时，试验组各菌群的密度也分别比对照组增加２－３个数量级，２．试验且虾的超氧化物歧化酶，酚氧化酶及溶菌酶的活性比对照组显著下降     

STUDIES ON IMMUNODIAGNOSIS OFHEPATOPANCREATIC PARVO- LIKEVIRUS DISEASE OF THE CHINESEPENAEID, PENAEUS CHINENSISI. PURIFICATION OF THE VIRUS

The viral disease of penaeids is indistinct but highly dangerous because their symptoms are often masked by some secondary ones.In order to gain knowledge on how to prevent the occurrence and spread of this viral disease, diagnostic studies on the early phase of the hepatopancreatic parvo-like viral (HPV)disease of cultured Penaeus chinensis was conducted using immuno-serological techniques. The purification of HPV was successfully done by density gradient ultracentrifugation of cane sugar.     

Selection of better extractants to indicate Pb bioavailability in lead-contaminated agricultural soils of Zhejiang Province

The accumulation of Pb in the food chain is one of the great concerns as it can cause chronic health problems and the available Pb is easily absorbed by crops. To shed light on Pb bioavailability in lead-contaminated agricultural soils of Zhejiang Province, a series of plant growth experiments were performed in a greenhouse to select more suitable extractants from five commonly used extractants (0.1 M HCl, 1 M NH4OAc, 0.1 M CaCl2, DTPA-TEA and Mehlich 3). The results showed that 1 M NH4OAc can extract Pb best, indicating the Pb bioavailability, then, DTPA-TEA and 0.1 M HCl in the tested soils. In case 1 M NH4OAc was used as an extractant, the critical Pb concentrations in soils were 50.19 mg/kg, 21.16 mg/kg and 114.00 mg/kg (1 M NH4OAc extracted Pb) in silty loam, yellowish-red soil and purplish soil, respectively. When the values exceed the above ones, the contents of Pb in Chinese cabbage leaves will exceed the Chinese Tolerance Limit of Lead in Foods (GB14935-94), as a result, potential ecological risk and hazard to human health via the food chain will appear.     

中国对虾精氨酸激酶与WSSV结构蛋白VP31的作用初探

摘要：精氨酸激酶（AK）通过调节无脊椎动物体内磷酸精氨酸与ATP之间平衡在能量代谢、储存和利用方面具有重要作用。前期研究发现,白斑综合征病毒（WSSV）囊膜蛋白VP31可以与中国明对虾AK（FcAK）发生结合作用。本文通过重组表达的rFcAK与rVP31的far-Western blotting分析,证实两者有结合作用。此外,rFcAK还与WSSV的VP19、VP28等6种结构蛋白有结合作用。双向电泳分析观察到,rFcAK与rVP31的磷酸化反应后,rVP31部分发生pI降低现象,提示rVP31可能发生了磷酸化。生物信息学分析表明VP31存在21个精氨酸残基,FcAK具有12个精氨酸结合位点,这可能为VP31和FcAK的结合活性提供了靶位。     

光色对中国明对虾(Fenneropenaeus chinensis)稚虾耗氧率昼夜变化节律的影响

采用流水装置测定了中国明对虾(Fenneropenaeus chinensis)稚虾在4种先色处理下耗氧率的昼夜变化.实验设四种光色处理,分别为自然光(590nm)、黄光(580nm)、绿光(525 nm)和蓝光(435nm),光照周期为14L:10D,水温为25.0±0.5℃,实验虾的规格为(5.507±0.147)...     

FOOD SOURCES AND CARBON BUDGET OF CHINESE PRAWN PENAEUS CHINENSIS

ＩＮＴＲＯＤＵＣＴＩＯＮＰｒａｗｎｆａｒｍｉｎｇｉｎＣｈｉｎａｉｓａｎｉｍｐｏｒｔａｎｔｍａｒｉｃｕｌｔｕｒｅｉｎｄｕｓｔｒｙｗｈｏｓｅａｎｎｕａｌｐｒｏｄｕｃｔｉｏｎｈａｓｅｖｅｒｒｅａｃｈｅｄｔｏｍｏｒｅｔｈａｎ 2 .0× 1 0 5 ｔ,ｉｎｗｈｉｃｈｓｅｍｉ ｉｎｔｅｎｓｉｖｅｃｕｌｔｕｒｅｏｆＣｈｉｎｅｓｅｐｒａｗｎ (ＰｅｎａｅｕｓｏｒｉｅｎｔａｌｉｓＫｉｓｈｉｎｏｕｙｅ)ｃｏｎｔｒｉｂｕｔｅｄｔｈｅｇｒｅａｔｅｓｔｐａｒｔ.Ｂｕｔｉｎｒｅｃｅｎｔｙｅａｒｓｔｈｅｐｒａｗｎｃｕｌｔｕｒｅｉｎｄｕｓｔ…     

青岛崂山湾近海扇贝养殖区细菌多样性及环境因子分析

为研究日本囊对虾(Marsupenaeusjaponicus)耐高亚硝酸盐的分子调控机制,利用新一代高通量Illumina测序技术,对日本囊对虾在高亚硝酸盐胁迫下的肝胰腺进行转录组测序,通过对高质量序列的拼接组装以及功能基因的注释和分类,发掘与耐高亚硝酸盐相关性状的候选基因。实验结果表明:①10个文库共获得920785608个净读本,数据量为6.48G~7.34G。②Q30>93.07%。利用 Trinity软件组装后获得 46308条单基因簇,N50为1833bp。③与对照组相比,高亚硝酸盐组分别识别出593、606、1089、497和988个差异表达基因。④对 DEGs进行功能注释,得到与免疫和代谢相关的通路和基因。⑤采用 qPCR 对随机选择的9个差异基因(DPD、ABCH、ProPOb、ACADL、CYP2J、PAT4、BHMT、CLEC 和PEPCK)在高亚硝酸盐胁迫下的表达情况进行检测,其表达量与转录组测序技术(RNASequencing,RNA-seq)趋势一致。本研究结果丰富了对虾cDNA 数据库的信息,为日本囊对虾在高亚硝酸盐胁迫下的分子机制研究奠定了基础。     

中国对虾卵母细胞发育的初步研究

于１９８９年１０月－１９９０年９月分别先后在昌邑县下营镇对虾育苗场和青岛黄岛盐业公司养殖场采集中国对虾，运用光学，电子显微镜及组化方法，研究中国对虾卵母细胞的形态发育及其内部结构分化。结果表明，中国对虾卵母细胞的发育可分为４个主要时相：Ⅰ．早期分化时相，Ⅱ滤泡初生期时相，Ⅲ卵黄大量生成时相，Ⅳ皮质棒生成时相。     

Purification and identification of a clotting protein from the hemolymph of Chinese shrimp (Fenneropenaeus chinensis)

The clotting protein (CP) plays important and diverse roles in crustaceans, such as coagulation and lipid transportation. A clotting protein was purified from the hemolymph of Chinese shrimp Fenneropenaeus chinensis (named as Fc-CP) with Q sepharose HP anion-exchange chromatography and phenyl sepharose HP hydrophobic interaction chromatography. Fc-CP was able to form stable clots in vitro in the presence of hemocyte lysate and Ca²⁺, suggesting that the clotting reaction is catalyzed by a Ca²⁺-dependent transglutaminase in shrimp hemocytes. The molecular mass of Fc-CP was 380 kDa under non-reducing conditions and 190 kDa under reducing conditions as was determined with SDS-PAGE. CP exists as disulfide-linked homodimers and oligomers. The N-terminal amino acid sequence of Fc-CP was identical to that of shrimps including Penaeus monodon, Farfantepenaeus paulensis and Litopenaeus vannamei; and similar to that of other decapods. The purified Fc-CP was digested with trypsin and verified on an ABI 4700 matrix-assisted laser desorption/ionization tandem time-of-flight (MALDI-TOF/TOF) mass spectrometry. Our results will aid to better understanding the coagulation mechanism of shrimp hemolymph.