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1.
INGESTIONANDEXCRETIONOFSEVERALANTIBACTERIALDRUGSBYTHEBRINESHRIMP（ARTEMIAPARTHENOGENETICA）1．TOXICITYT
ＩＮＧＥＳＴＩＯＮＡＮＤＥＸＣＲＥＴＩＯＮＯＦＳＥＶＥＲＡＬＡＮＴＩＢＡＣＴＥＲＩＡＬＤＲＵＧＳＢＹＴＨＥＢＲＩＮＥＳＨＲＩＭＰ（ＡＲＴＥＭＩＡＰＡＲＴＨＥＮＯＧＥＮＥＴＩＣＡ）１．ＴＯＸＩＣＩＴＹＴＯＡＲＴＥＭＩＡ，ＩＮＧＥＳＴＩＯＮＡＮＤＥＸＣＲ... 相似文献
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夜光藻的实验室培养及对其带触手二分裂现象的观察ＬＡＢＯＲＡＴＯＲＹＣＵＬＴＵＲＥＡＮＤＯＢＳＥＲＶＡＴＩＯＮＯＦＥＱＵＡＬＢＩＮＡＲＹＦＩＳＳＩＯＮＷＩＴＨＴＥＮＴＡＣＬＥＩＮＮＯＣＴＩＬＵＣＡＳＣＩＮＴＩＬＬＡＮＳ（ＭＡＣＡＲＴＮＥＹ）￥ＸｕＲｅｎ... 相似文献
3.
长江口水质污染及生物残毒状况调查 总被引：7，自引：0，他引：7
长江口水质污染及生物残毒状况调查ＩＮＶＥＳＴＩＧＡＴＩＯＮＯＮＴＨＥＳＴＡＴＥＯＦＴＨＥＷＡＴＥＲＰＯＬＬＵＴＩＯＮＡＮＤＴＨＥＲＥＳＩＤＵＡＬＴＯＸＩＣＩＴＹＩＮＯＲＧＡＮＩＳＭＩＮＣＨＡＮＧＪＩＡＮＧＲＩＶＥＲＥＳＴＵＡＲＹ￥ＹａｏＹｅｍｅｉａｎ... 相似文献
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近年来中国淡水渔具的研究成果及今后的研究方向 总被引：1，自引：0，他引：1
近年来中国淡水渔具的研究成果及今后的研究方向ＡＳＵＲＲＥＹＯＦＲＥＳＥＡＲＣＨＡＣＨＩＥＶＥＭＥＮＴＳＯＦＣＨＩＮＡＩＮＦＲＥＳＨＷＡＴＥＲＯＮＦＩＳＨＩＮＧＧＥＡＲＳＡＮＤＡＮＥＸＰＬＯＲＡＴＩＯＮＯＮＧＵＩＤＥＬＩＮＥＳＦＯＲＦＵＴＵＲＥＲＥＳＥ... 相似文献
6.
硬骨鱼类卵母细胞最后成熟的调控ＴＨＥＲＥＧＵＬＡＴＩＯＮＯＦＦＩＮＡＬＯＯＣＹＴＥＭＡＴＵＲＡＴＩＯＮＩＮＯＳＴＥＩＣＨＴＨＹＥＳ汪小东林浩然（中山大学生命科学学院,广州５１０２７５）ＷＡＮＧＸｉａｏＤｏｎｇ,ＬＩＮＨａｏＲａｎ（ＳｃｈｏｌｏｆＬ... 相似文献
7.
自行往返远控潜吸式清淤机的发明与研究 总被引：2，自引：0，他引：2
自行往返远控潜吸式清淤机的发明与研究朱永兴（上海水产大学，２０００９０）关键词清淤机械，分类，行走，潜吸，远控ＩＮＶＥＮＴＩＯＮＡＮＤＳＴＵＤＩＥＳＯＮＡＵＴＯＭＡＴＩＣＤＩＳＴＡＮＴ－ＣＯＮＴＲＯＬＵＮＤＥＲＷＡＴＥＲ－ＣＯＬＬＥＣＴＩＮＧＭＡＣＨ... 相似文献
8.
高产池塘养殖鱼细菌污染的季节变化 总被引：1，自引：0，他引：1
高产池塘养殖鱼细菌污染的季节变化陶妍，骆肇荛（上海水产大学，２０００９０）关键词养殖鱼类，高产池塘，细菌污染，鲜度，季节变化ＳＴＵＤＩＥＳＯＮＳＥＡＳＯＮＡＬＶＡＲＩＡＴＩＯＮＩＮＢＡＣＴＥＲＩＡＬＣＯＮＴＡＭＩＮＡＴＩＯＮＯＦＦＩＳＨＣＵＬＴＵＲＥ... 相似文献
9.
实现我国水产系统文献信息资源共享的探讨ＡＤＩＳＣＵＳＳＩＯＮＯＮＴＨＥＬＩＢＲＡＲＹＲＥＳＯＵＲＣＥＳＨＡＲＩＮＧＩＮＣＨＩＮＡＦＩＳＨＥＲＹＣＩＲＣＬＥＳ杨宁生（中国水产科学研究院渔业综合信息研究中心，北京１０００３９）ＹａｎｇＮｉｎｇｓｈｅｎｇ（... 相似文献
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Using mark-recapture methods, the movements of the fluvial form of masu salmon (Oncorhynchus masou masou) in a mountain stream on the island of Kyushu, Japan, were studied. Most (78%) of the masu salmon were recaptured in the
pool in which they had been originally caught and tagged. Of those that moved between pools, the proportion of individuals
that moved during the breeding period was not significantly higher than the proportion that moved during the non-breeding
period. However, during the breeding period, a higher proportion of larger salmon moved than did smaller fish. The proportion
of mobile large males during breeding period was higher than that for small males. Also, it was found that a few individuals
showed long-range movement in the autumn. As a long-term movement, 78 individual fish (65%) that were recaptured more than
three times showed high sedentary tendencies. Sixteen individual mobile fish (13%) moved and returned to the original pool.
Fluvial form of masu salmon in Kyushu show a high sedentary nature; however, large mature males seem to actively move in search
of female during breeding period. 相似文献
12.
T. Citarasu K. Venkatramalingam M. Micheal Babu R. Raja Jeya Sekar M. Petermarian 《Aquaculture International》2003,11(6):581-595
The indiscriminate use of antibiotics and chemicals in shrimp hatcheries has led to biomagnification and that in turn could
lead to rejection of a whole consignment. The application of the bioencapsulation technique as a tool for curative treatment
in shrimp larvae was investigated. Herbs having antibacterial properties such as Solanum trilobatum, Andrographis paniculata and Psoralea corylifolia (methanolic extracts) were bioencapsulated in Artemia and fed to Penaeus monodon post larvae PL 1–25. The post larvae were reared in a medium inoculated with pathogenic bacteria such as Pseudomonas aeruginosa, Staphylococcus aureus, Salmonella typhi and Vibrio sp. Post larvae reared in the non-inoculated water and fed with non-enriched Artemia exhibited 90% survival, highest specific growth rate (12.43%) and reduced bacterial load. P. monodon reared in the bacterial inoculated water and fed with the non-enriched Artemia exhibited the lowest survival (10–30%), specific growth rate (8.42–9.1%) and increased bacterial load (2.86 × 103 to 3.76 × 105 cfu/g). The methanolic extracts of the herbs helped to increase survival and specific growth rate and reduced bacterial load
in the P. monodon culture system. Among the three herbal extracts, P. corylifolia enriched Artemia fed post larvae showed the tendency to higher survival (>50%), growth rate (11.5 averaged) and low bacterial load (1.12 × 105 cfu/g).
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
13.
不同比例复合益生菌对凡纳滨对虾生长、免疫及抗氨氮能力的影响 总被引：2，自引：0，他引：2
对从凡纳滨对虾(Litopenaeus vannamei)肠道中分离出的鲍鱼希瓦氏菌(Shewanella haliotis)、蜡样芽孢杆菌(Bacillus cereus)和双壳气单胞菌(Aeromonas bivalvium)3株有益菌株,利用正交设计得到9种复合比例,通过饲料中添加上述9种比例混合的菌体(菌数总量为109 cfu/g)饲喂凡纳滨对虾,经过28 d养殖实验,评价其对凡纳滨对虾生长、免疫指标的影响。随后,利用氯化铵调节水体氨氮浓度至26.67 mg/L,经过16 d的氨氮毒性实验,研究不同比例复合益生菌对凡纳滨对虾抗氨氮能力的影响。研究结果表明,9个复合益生菌实验组的增重率和特定生长率均显著高于对照组(P0.05),并且以3株菌菌数6︰1︰3比例效果较好;不同配比的复合益生菌能够显著提高酸性磷酸酶(ACP)、碱性磷酸酶(ALP)、总超氧化物歧化酶(T-SOD)活力(P0.05),并表现出了不同的影响效果,其中,3株菌菌数(菌数总量为109 cfu/g,下同)2︰3︰3、4︰2︰3及6︰1︰3比例对ACP活力具有显著促进作用(P0.05),3株菌菌数4:2︰3和6︰1︰3比例对ALP活力具有显著促进作用(P0.05);3株菌菌数2︰1︰1比例对T-SOD活力具有显著促进作用(P0.05);各比例的复合菌对溶菌酶活力的影响不显著(P0.05);氨氮浓度26.67 mg/L条件下,不同比例复合菌组对虾累计存活率显著高于对照组(P0.05),其中以3株菌菌数4︰3︰1和6︰3︰2比例组累计存活率较高,即抗氨氮效果较好。 相似文献
14.
OAA, the potent anti-HIV protein from Oscillatoria agardhii NIES-204 belongs to a new lectin family, shows strict binding specificity for high-mannose N-glycans, and has an extremely high association constant in the picomolar range for recombinant gp120, an envelope protein
of HIV. In this study we have cloned the gene encoding OAA from the genomic DNA of the cyanobacterium, and efficiently expressed
the recombinant lectin (rOAA) in Escherichia coli. The rOAA expressed as a His-tagged fusion protein was recovered in a soluble form and purified in high yield (48 mg/1 l-culture)
by metal chelate chromatography. The fusion protein was cleaved with factor Xa, and the resulting rOAA was isolated in a final
yield of 14.8 mg/1 l-culture by reversed-phase HPLC. Both the N-terminal sequence and the molecular mass of rOAA were found
to be identical with those of OAA. The rOAA was fully functional with the same properties as OAA, as evidenced by hemagglutination
activity, hapten-inhibition test, and binding specificity for high-mannose-type N-glycans. This rOAA should be applicable as a specific probe for high-mannose N-glycans and should contribute to elucidation of the molecular basis of its strict carbohydrate-binding specificity and potent
anti-HIV activity. 相似文献
15.
S. Mortensen T. Meeren A. Fosshagen I. Hernar L. Harkestad L. Torkildsen Ø. Bergh 《Aquaculture International》2000,8(2-3):267-271
Between 1995 and 1997, a traditional Norwegian oyster poll with an attachednursery was used for the production of scallop (Pecten maximus) spat.During summer 1997, four batches of 2 mm scallop spat were placed in thenursery. In June, hydroids (Obelia) caused problems with fouling andaccumulation of sediment in the nursery. Thereafter, the scallop spat wereheavily infested with tube dwelling polychaets (Polydora sp.). Thepolychaets were both introduced with poll water and reproduced inside thenursery. Infested spat suffered high mortalities. Although the spat could have been affected by the hydroids, as well as shortage of food, Polydorainfestations were considered the main cause of the mortalities. Dead andinfested spat were continuously sorted out and discarded, but the infestationproblems persisted. As a result, the scallop spat did not represent anycommercial value for the company, and in September, the nursery wasemptied. In total, approximately one million spat – representing onethird of Norway's intensive scallop spat production in 1997, was lost. 相似文献
16.
Timothy J. Green Brian J. Jones Robert D. Adlard Andrew C. Barnes 《Aquaculture (Amsterdam, Netherlands)》2008,280(1-4):35-38
Differences in the survival of QX-resistant fifth generation (QXR5) and wild-caught (Wild-Caught) Sydney rock oysters were assessed over the QX-disease risk period in the Pimpama River, SE Queensland. Cumulative mortality of Wild-Caught oysters (31.7%) was significantly greater than QXR5 oysters (0.0%) over the 118 days of the experiment. PCR and histological results showed that Wild-Caught oyster did not die from QX disease. Histology revealed oysters were infected with disseminating hemocytic neoplasia, a Steinhausia-like infection, a Rickettsia-like organism infecting epithelial cells of the gill, digenean flukes encysted in the gonadal tissue and a gill response to an unknown toxin. The cause of mortality is attributed to disseminating hemocytic neoplasia. 相似文献
17.
鳢流行性溃疡综合征病原分离鉴定与病理形态学观察 总被引：1，自引：0，他引：1
为寻找冬春季鳢(Channa maculata)烂身病的病原,应用组织压片、组织切片、扫描电镜技术、HE 常规染色法和 Grocott 六胺银染色法、霉菌分离纯化及 ITS 的序列分析等对冬春季患疑似溃疡综合征的烂身病鳢进行了病原学与病理学研究。病变组织压片观察到大量直径 10~20 μm,分枝较少、纤细菌丝。扫描电镜观察到肌肉组织中延伸出大量的纤细的丝状真菌。患病鳢皮肤和肌肉表现为变性、坏死与炎性细胞浸润,溃疡灶肌肉内可见大量的慢性肉芽肿结节和炎性细胞浸润。结节基本结构由类上皮细胞和多核巨细胞、炎性细胞、霉菌菌丝(横断面呈圆形,斜断或纵断呈丝状)组成,霉菌位于结节中央。Grocott 六胺银染色观察到结节中有大量棕色菌体。无菌分离培养可观察到典型丝状霉菌;霉菌在灭菌池塘水 20℃过夜, 12 h 后可观察原代孢子群形成,真菌 ITS 序列分析表明其与侵袭丝囊菌(Aphanomyces invadans)同源性为 100%。侵袭丝囊霉菌(A. invadans)是杂交鳢溃疡综合症病的主要病原,为鱼类流行病学调查和疾病防治的深入研究奠定基础。 相似文献
18.
Satisfying nutrient requirement of corals is still a major constraint for maintaining corals in marine aquariums. Corals are
polytrophic in nature. Heterotrophic feeding on zooplankton is one of the corals’ strategies to overcome nutrient deficiency.
Artemia salina nauplii are commonly used as biocarriers for many fish larvae in aquaculture and can also serve as a biocarrier for coral
in aquariums, provided coral acceptability, optimal feeding rate, and digestibility of the nauplii are well understood. Feeding
rate and digestibility of coral fed on A. salina nauplii at 100, 2,000, 4,000, 6,000, and 10,000 ind. l−1 under light and dark conditions was assessed in this study. The maximum feeding rates of Galaxea fascicularis under light and dark conditions was 113.6 ind. polyp−1 h−1 and 76.9 ind. polyp−1 h−1, respectively. The daily feeding rates of G. fascicularis varies and depends on nauplii density. Light plays an important role in coral feeding. Nevertheless, the quantity of A. salina nauplii consumed by the coral under light and dark conditions was not significantly different (P > 0.05). A. salina nauplii are well accepted by G. fascicularis. Complete nauplii digestion was observed after 180 min. Digestibility of A. salina nauplii by G. fascicularis was positively correlated with digestion time. 相似文献
19.
The present study was undertaken with a view to compare the precision and reliability of the age readings obtained from different bony structures of some important freshwater teleosts viz., Labeo rohita (Hamilton), Catla catla (Hamilton) and Channa marulius (Hamilton). Standard procedures were followed to prepare and study the age structures. In L. rohita and C. marulius percent agreement between reader's age estimates was highest for scales, i.e. 96.3% and 90.5%, respectively and in C. catla percent agreement was highest (93.3%) for opercular bone. When scale ages were compared with other alternative structures viz., otoliths, opercular bone, vertebral centra and dorsal fin rays, percent agreement was found highest between scale and opercular bone age estimates (77.8%) in L. rohita and between scale and otoliths (94.8%) in C. marulius. In case of C. catla highest percent agreement was found between opercular bone and scale age estimates. In L. rohita each of the ageing structure showed significant (P < 0.05) underestimation of age in comparison to scales. In C. catla mean age estimates from opercular bone were comparable (P > 0.05) to the values obtained from all other structures except dorsal fin rays. In C. marulius mean age estimates from scales were comparable (P > 0.05) to those from all other structures except from dorsal fin rays. Results indicated scales to be the most suitable structure for ageing L. rohita and C. marulius and opercular bone for C. catla. However, in C. catla also scales may be used as a non-destructive method of age estimation with satisfactory results. 相似文献
20.
Óscar Monroig Juan Carlos Navarro Isabel Amat Pedro González Francisco Amat Francisco Hontoria 《Aquaculture International》2003,11(1-2):151-161
Different liposome formulations, includingseveral combinations of membrane composition,type of vesicle (multilamellar and largeunilamellar vesicles), preparation method, andvehiculated nutrient, have been assayed asbioencapsulation products to enrich Artemia nauplii with nutrients for feeding fish larvae.The stability of the liposome preparationsunder conditions of use as enrichment producthas been tested using water soluble fluorescentmarkers as leakage indicators. The content ofthe fatty acids and lipid classesbioencapsulated in Artemia nauplii withliposomes has been analyzed by gas and thinlayer chromatography, respectively, andcompared with other enrichment products. Theeffect of the liposome enriched Artemianauplii used as food for fish larvae has beenevaluated in sea bass cultures. Liposomes withhigh content in polyunsaturated fatty acidsleak out more than 50% of their aqueous phasein less than 2 hours, unless they arestabilized with cholesterol and formed as largeunilamellar vesicles. Such vesicles hold70% of the encapsulated material for 8 hours.Liposome enriched nauplii in this study reflectthe influence of the enrichment products,however, they are far from the commercialemulsion (Super Selco) in terms ofdocosahexaenoic acid content, except for thenauplii enriched with liposomes made of purekrill phospholipid extract by the method ofdetergent solubilization. The liposome enrichednauplii show a higher amount of polar lipids incontrast to the feed enriched with emulsions.The larvae fed liposome enriched nauplii haveonly a slightly lower docosahexaenoic acidcontent than those fed emulsion enrichednauplii. The results obtained confirm thesuitable potential use of liposomes as foodsupplement in larviculture. Problems andadvantages are discussed. 相似文献