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漠斑牙鲆属于广温广盐性鱼类,在淡水、微咸水、半咸水、海水至高盐水中都能适应,南北方沿海地区以及内陆都能养殖。碧流河水库先后于2007年和2008年对该鱼进行了试养,成果较为显著。下面将漠斑牙鲆养殖经验、技术进行总结如下。一、养殖设施碧流河水库运用圆形孵化池进行漠斑牙鲆的养殖试验。 相似文献
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漠斑牙鲆属广温广盐性底栖鱼类,在我国南方和北方均能养殖,不仅能在海水中养殖,还可在淡水中养殖,是一个推广前景非常广阔的名贵品种.为此,我市积极开展了漠斑牙鲆引养、养成与育苗试验.现将全人工育苗试验情况报告如下. 相似文献
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漠斑牙鲆淡化养殖中的疾病及其防治 总被引：2，自引：0，他引：2
2004年，笔者从事漠斑牙鲆淡化技术研究和漠斑牙鲆微咸水养殖技术研究(养殖水体盐度2‰～3‰)，对漠斑牙鲆在工厂化养殖中发生的疾病及其防治措施进行了初步研究，现总结如下： 相似文献
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我国漠斑牙鮃引种概况及其产业发展探讨 总被引：1，自引：0，他引：1
水产动物引种有效地克服了品种的地域性特点,使优良的水产品种在更大范围内得到共享和利用,目前世界水产增养殖的品种主要来自引种,80%的增养殖产量是由于引种产生的。我国是水产引种工作做得最多的国家之一,已从国外引进水产品种150多种,60%以上的引进种在全国或部分地区得到推广养殖,对调整水产养殖结构,丰富水产品市场和增加渔农民收入起到了重要作用。漠斑牙鲆是近年来我国水产引种的又一颗新星,其优良的养殖性能和品质注定漠斑牙鲆在我国水产养殖业必将大有作为。漠斑牙鲆是广温广盐性鱼类,海水、淡水中均能生长。与大西洋牙鲆和白点牙… 相似文献
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漠斑牙鲆(Paralichthys lethostigma)隶属硬骨鱼纲,鲽形目,鲆科,牙鲆属,原产于美国沿海,是一种优质的水产养殖品种,自然分布于美国佛罗里达洲北部沿海和墨西哥湾沿海.其肉质鲜美、细腻滑爽,含有大量的不饱和脂肪酸和DHA,具有很高的经济价值和营养价值,该品种具有适盐范围广,抗病力强,耐高温,耐低氧,生长速度快等特点.从2001年起我国陆续引进、驯化漠斑牙鲆后,进行人工养殖,其养殖史不长,在我国漠斑牙鲆的苗种繁育技术已被突破,为漠斑牙鲆的养殖推广工作奠定了基础.2006年在大黑汀水库进行了网箱养殖试验,报告如下.1 材料与方法 相似文献
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漠斑牙鲆(Paralichthys Lethostigma)又称大西洋漠斑牙鲆、南方鲆,隶属硬骨鱼纲(Osteicthys)、鲽形目(Peuronetiformes)、鲽亚目(Plenronectoides)、鲆科(Bothidae)、牙鲆亚科(Paralichthyinae)、牙鲆属(Paralichthys),为深海底栖鱼类,是美洲众多鲆鲽鱼类中个体最大的一种.漠斑牙鲆具有很好的养殖性能,具有生长快、品质优、适应性广、抗逆能力强等特点,它既可生活在海水里,又可在淡水中生长,适合在我国北方、南方进行池塘养殖、网箱养殖和工厂化养殖,该品种的引进,为我国鱼类养殖又增添了一个新的优良品种. 相似文献
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盐碱水池塘养殖漠斑牙鲆试验 总被引：2，自引：0，他引：2
漠斑牙鲆(Paralichthys lethostigma) 俗称南方鲆,原产于美国大西洋沿海,2002年引入我国进行养殖.漠斑牙鲆具有生长快、品质优、适应性广(最适宜盐度范围5‰～35‰,适宜养殖水温范围7～35℃)、抗逆能力强、耐低溶解氧等特点,且肉质细腻,营养丰富,是人们公认的水产养殖良种.2005年沧州市水产技术推广站首次利用盐碱水,通过水质改良,进行了漠斑牙鲆池塘养殖试验,取得了成功. 相似文献
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Gillnets fished in North Carolina, USA, estuaries have high rates of bycatch relative to the target catch of southern flounder, Paralichthys lethostigma Jordan & Gilbert. This study tested whether rectangular‐mesh gillnets would maintain catch rates of southern flounder and reduce fish bycatch relative to conventional diamond‐mesh gillnets in two North Carolina estuaries. In the Neuse River estuary, catch rates of legal southern flounder were not different between the two mesh shapes, but the bycatch of red drum, Sciaenops ocellatus (Linnaeus) and other fish species was reduced with rectangular‐mesh net. In the Newport River estuary, southern flounder and red drum catches were reduced in rectangular‐mesh net, but the decrease was greater for red drum. Catches of sublegal southern flounder were reduced in the rectangular‐mesh net in both estuaries. Reduced catch rates of sublegal southern flounder and bycatch species suggest rectangular mesh may help manage stocks of estuarine fish species in areas where gillnets are used to target flatfishes. 相似文献
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漠斑牙鲆仔鱼、稚鱼和幼鱼对低盐度的耐受力和淡水驯化技术的研究 总被引：3，自引：0，他引：3
研究了漠斑牙鲆仔鱼、稚鱼和幼鱼对低盐度的耐受力和漠斑牙鲆的淡水驯化技术。初孵仔鱼在盐度为5的水中最多存活5d,5d以后全部死亡。30日龄稚鱼在4h10min淡水组全部死亡,对淡水的耐受力较低,而盐度为5～25的各组72h的存活率都在95.00%以上。90日龄幼鱼经缓慢淡水驯化9d后存活率可达98%以上,对漠斑牙鲆幼鱼进行淡水驯化的最佳年龄为90日龄。淡水驯化影响幼鱼初期的摄食,以后则逐渐趋于正常;急性淡水驯化对幼鱼的伤害比缓慢淡水驯化大;漠斑牙鲆对低盐的耐受力随生长和发育逐渐增加,年龄是影响幼鱼对低盐度耐受力的主要因素。 相似文献
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漠斑牙鲆仔鱼摄食节律的研究 总被引：3，自引：0，他引：3
在实验室条件下研究了漠斑牙鲆仔鱼摄食节律。试验结果表明：漠斑牙鲆仔鱼摄食具有昼夜节律性，其摄食活动主要在白天进行，在10：00光照度为400lx时摄食最为活跃，抵达摄食高峰，仔鱼夜间不摄食，全天表现明显的摄食节律。 相似文献
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利用cDNA末端快速克隆(Rapid Amplification of cDNA Ends,RACE)方法获得了漠斑牙鲆(Paralichthys lethostigma)促黄体素(Luteinizing Hormone,LH)β亚基的cDNA全长序列,检测了LHβ亚基mRNA的组织表达水平,揭示了垂体、肝脏和卵巢中LHβ亚基mRNA在卵巢发育周期中的表达水平变化,利用酶联免疫技术(Enzyme-Linked Immuno Sorbent Assay,ELISA)测定了血浆LH和雌二醇(Estrodiol,E2)表达水平的变化。结果表明,漠斑牙鲆为卵巢非同步发育分批产卵性鱼类,LHβ亚基cDNA序列全长597 bp,开放阅读框(Open reading frame,ORF)长438 bp,编码145个氨基酸,LHβ亚基mRNA具有广泛的组织分布特性。与肝脏和卵巢相比,垂体中LHβ亚基mRNA表达水平在卵巢发育各个阶段都有较高表达水平,在IV期表达水平迅速升高至较高水平并保持至VI期。卵巢中LHβmRNA表达水平在V期达到峰值,而肝脏中LHβmRNA表达水平在II期时达到峰值,在V期也有相对较高的表达水平。血浆LH和E2表达水平在卵巢发育周期中均呈现趋势一致的规律性变化。研究结果可为认识漠斑牙鲆生殖调控机制提供基础资料。 相似文献
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将牙鲆基因组DNA经限制性内切酶RsaⅠ和BstUI双酶切后采用FIASCO法构建酶切片段基因组文库。共挑取269个克隆,177个为阳性克隆,阳性克隆率为65.79%。经测序后获得191条微卫星序列,其中完美型占74.35%;非完美型占14.66%;混合型占10.99%。用引物设计软件Primer Premier 5.0设计引物153对,挑选其中的50对合成并在32个野生牙鲆个体中进行扩增,共31个位点具有多态性,统计结果后使用POPGENE软件进行分析,平均等位基因个数为3.939 4,平均有效等位基因数为3.052 2,平均观测杂合度为0.650 1,平均期望杂合度为0.586 6,各引物的Hardy-Weinberg平衡指数在0.012 587~0.984 917变动。这些筛选出的多态性微卫星标记可应用于进一步的牙鲆遗传多样性分析、家系分析及遗传图谱的构建等工作中。 相似文献
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容器颜色对漠斑牙鲆白化率和成活率的影响 总被引：1，自引：0，他引：1
本文就培养容器的颜色对漠斑牙鲆稚鱼的白化率和生长率的影响进行初步研究。结果表明:用深蓝色和黑色等深色容器培养的稚鱼白化率显著低于白色和黄色等浅色容器(p<0.05),黑色、深蓝色、黄色和白色4个组别(N=100)的白化率分别为20.8%、14.4%、57.6%和86.6%;白色最高为86.6%,深蓝色最低为14.4%;而用不同颜色的容器培养漠斑牙鲆的稚幼鱼,对其成活率影响不大(p>0.05),黑色、深蓝色、黄色和白色4个组别的成活率分别为96.0%、90.0%、82.5%、93.0%;白化稚幼鱼的生长发育并无异常。 相似文献
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Toshihiro Wada Kyoichi Kamiyama Shinya Shimamura Osamu Murakami Tadashi Misaka Masayoshi Sasaki Takaaki Kayaba 《Fisheries Science》2014,80(6):1169-1179
Commercial landings of a rare pleuronectid flatfish, barfin flounder Verasper moseri, recovered drastically after large-scale stock enhancement in Hokkaido conducted since 2006. This study investigated commercial landings, fishing grounds, size distributions, and sex and age compositions of barfin flounder during 2007–2011 in southern Tohoku, their major spawning ground, which is over 700 km south of Hokkaido. Landings, mostly comprising stocked fish, increased drastically in southern Tohoku: from 2.0 tons in 2007 to 20.8 tons in 2010. Over 98 % of them were landed during January–April, with the peak period during February–March. Fishing logbook data of offshore bottom-trawl vessels during 2007–2010 revealed the upper continental slope off southernmost Tohoku as the main fishing ground (35°40′–36°50′N, annual weighted mean depth 267–299 m). Two size modes in the landings consisted of males (ca. 40 cm) and females (ca. 60 cm). The main age at fishery recruitment in southern Tohoku was younger for males (age 2+) than for females (ages 3+ and 4+), the result of which was that the female percentage was lowest at 1.5 % in 2009 and highest at 7.9 % in 2011. Our results showed clearly how the effectiveness of large-scale stock enhancement in Hokkaido extended to southern Tohoku in association with spawning migration of stocked barfin flounder. 相似文献
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Modeled transport of winter flounder larvae spawned in coastal waters of the Gulf of Maine 
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下载免费PDF全文 Winter flounder, Pseudopleuronectes americanus, from southern New England and the Gulf of Maine were historically considered to be obligate estuarine spawners. However, recent experiments and observations document that winter flounder in the Gulf of Maine also utilize coastal waters for spawning. An individual‐based modeling approach was used to investigate the transport of winter flounder larvae from three hypothesized coastal spawning grounds in the Gulf of Maine. Transport success rates were greatest for larvae released from Ipswich Bay, intermediate for Stellwagen Bank and least successful for those released from Jeffreys Ledge. There was substantial interannual variability in larval transport and geographic patterns of potential connectivity. Furthermore, the date of spawning had an important influence on transport success. Model results suggest that certain coastal spawning grounds used by winter flounder may serve as an important source of larvae to estuaries and nearshore nursery areas. The potential influx of coastal spawned larvae could have implications for the resilience, productivity and gene flow in local populations. Model results provide further support for the conclusion that winter flounder in the Gulf of Maine may not be solely dependent upon estuaries for spawning. Results also suggest that coastal spawning groups should be considered explicitly in the management of winter flounder, and protected under Essential Fish Habitat regulations. 相似文献
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牙鲆抗鳗弧菌病AFLP分子标记筛选 总被引：13，自引：1，他引：12
牙鲆(Paralichthys olivaceus)感病群体和抗病群体通过注射鳗弧菌(Vibrio anguillarum)获得。利用61对AFLP引物组合扫描了牙鲆感病群体和抗病群体各20个个体,结果共扩增出3 200条带,8条AFLP带在2个群体中显示了极大的差异(P<0.01),其中有2条带是在抗病群体中出现的高显性基因频率的标记,另外6条带是在感病群体中出现的高显性基因频率的标记。这些标记很可能是与抗病性相关的候选标记。这些抗病性候选标记的获得为实现牙鲆分子标记辅助育种和抗病基因克隆奠定了一定基础。[中国水产科学,2007,14(1):155-159] 相似文献