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<正> 中国水产科学研究院长江水产研究所承担的“七·五”国家重点科技项目“颖鲤(镜鲤♀×鲤鲫移核鱼 F_2♂)及其杂种优势利用的研究”鉴定会,于1988年3月底由中国水产科学研究院主持在湖北沙市召开。参 相似文献
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<正> 本试验用含粗蛋白27.39%的配合饲料对三种杂交鲤子一代(散鳞镜鲤♀×鲤鲫移核鱼(?),鲤鲫移核鱼♀×散鳞镜鲤(?),荷元鲤♀×散鳞镜鲤(?);以下分别简称杂交鲤Ⅰ、Ⅱ、Ⅲ)夏花鱼种进行90天的喂养,结果报道如下。材料与方法一、试验池。为三个水泥池,编号1*、2*、3*,面积分别为50、50、25平方米,水深0.8~1米,分别放养杂交鲤Ⅰ、Ⅱ、 相似文献
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<正> 颖鲤是国家重点科研攻关的水产良种繁育研究课题,是中国水产科学研究院长江水产研究所科技人员在“七五”期间取得的新的重要科研成果,1988年获得了中国水产科学研究院科技成果一等奖,1989年获得了农业部科技进步三等奖,1991年参加了《国家“七五”科技攻关重大成果展览会》。颖鲤是由鲤鲫移核鱼第二代为父本,黑龙江散鳞镜鲤为母本,经常规有性杂交而获得的第一代杂交种。其父本鲤鲫移核鱼是用江西婺源荷色红鲤的囊胚细胞核移植到本地鲫鱼的去核卵内发育而成的。因此,颖鲤是采用细胞工程技术与常规杂交技术的有机结合新的综合育种方法而获得的育种新秀。其技术新颖、独特,顾名思义称之为“颖鲤”。 相似文献
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一种以鲤鲫移核鱼子二代为父本.散鳞镜鲤为母体杂交而获得的优良杂交鲤一颖鲤于88年3月31日在湖北沙市通过了农业部部级鉴定。 相似文献
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兴国红鲤、草鱼及其杂种一代血清蛋白质的电泳分析 总被引:3,自引:0,他引:3
用聚丙烯酰胺凝胶垂直平板电泳分析了兴国红鲤、草鱼及其杂种一代的血清蛋白。结果表明,它们各有不同的电泳图谱,杂种一代为双亲的嵌合型,相对而言,MA带偏向母本,MI带偏向父本。 相似文献
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草鱼卵子和三角鲂精子杂交的受精细胞学研究 总被引:20,自引:0,他引:20
本实验观察了两种不同亚科鱼——草鱼()和三角鲂()杂交的受精细胞学过程,证实异源的三角鲂精子能够进入到草鱼卵子中,诱导星光并形成雄性原核。卵子在精子的作用下,继续完成了第二次减数分裂、排出第二极体,最后雌雄原核相互接触而融合。全部过程有正常的受精细胞学程序和卵裂方式,由此产生的后代兼具父、母本双方的遗传性状。 相似文献
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2012年5-10月,在面积为0.19hm2的试验池1中放养体质量160g的松浦镜鲤(Cyprinus carpio Songpu)117,700尾·hm^-2,混养体质量160g的长丰鲢(Hypophthalmichthys molitrix)春片、乌子头和鳙(Aristichthys no-bilis)夏花鱼种。在面积为0.19hm2的试验池2中放养体质量149.5g的松浦镜鲤3,450尾·hm^-2,只混养鲢和鳙夏花,采用常规饲养方法。2012年10月2日,试验池1平均每hm2产鱼21,025.5kg,其中松浦镜鲤平均全长34.3cm,体质量1425g,产量18,294.0kg;长丰鲢春片平均体质量674g,平均产量1,816.5kg,长丰鲢夏花平均全长18.6cm,体质量112.4g,平均产量592.5kg;鳙夏花平均全长达12.1cm,体质量39.9g,平均产量322.5kg。试验池2平均每hm2产鱼3,069.0kg,其中松浦镜鲤平均全长35.0cm,体质量1225g,平均产量2,766.0kg;鲢夏花平均全长达11.3cm,体质量24.9g,平均产量130.5kg;鳙夏花平均全长达11.1cm,体质量35.1g,平均产量172.5kg。试验表明,高密度养殖的松浦镜鲤产量显著高于密度低时,长丰鲢夏花的出池体质量是普通鲢的4.5倍,特殊生长率(6.27%·d^-1)是普通鲢(3.5%·d^-1)的1.79倍。文中还讨论了松浦镜鲤养殖池的水质和技术特点。 相似文献
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采用PHA和秋水仙素体内注射制备两种鲤鲫杂交回交子代鱼(鲤鲫杂交♀×德国镜鲤♂;鲤鲫杂交♀×鲤♂)的染色体。结果表明:两种鲤鲫杂交回交子代染色体组由150条染色体组成,按着丝粒位置染色体组型可分为四组,每个染色体小组均由三条同源染色体组成。其中鲤鲫杂交♀×鲤♂回交的染色体数目为3n=150,染色体臂数NF=234,其核型公式为:3n=60m+24sin+36st+30t;鲤鲫杂交♀×德国镜鲤♂回交染色体数目为3n=150,染色体臂数NF=258,其核型公式为:3n=63m+45sin+12st+30t。 相似文献
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将性成熟的鲤鲫杂交鱼一代(F1)的雌鱼与雄性红鲫鱼杂交,获得了回交鲫子代,分析了平均体质量94.2g的1龄回交鲫子一代的细胞染色体核型,测定了其DNA含量。肾细胞直接制片法表明:回交鲫子代染色体由147条组成,即3n=147,NF=222,其核型公式为:3n=51m+24sm+27st+45t。流式细胞记数法结果表明:在20尾鱼中有14尾回交鲫子代细胞的DNA含量是对照鱼(红鲫鱼)的1.5倍,占总鱼数的70%;6尾在2~3倍体之间,非常接近三倍体,占总鱼数的30%。本结果与其细胞染色体核型分析结果基本一致,说明该鱼是以三倍体为主的回交种。 相似文献
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Martin Kocour Otomar Linhart David Gela Marek Rodina 《Journal of the World Aquaculture Society》2005,36(1):103-113
The results of a 4-yr study focused on comparing growth performance in all-female and mixed-sex populations of common carp are presented. All-female and mixed-sex populations of purebred Northern mirror carp (M72) and scaly crossbreds of female Ropsha (ROP) and male/neomale M72 carp (ROP × M72) were used for this experiment. Average weight and survival after each growing season and slaughtering value after the third and fourth year of the study were measured. While after 8 wk of rearing no differences between all-female and mixed-sex populations were found, the 1-yr-old all-female mirror carp population (M72) gained 29.7% more weight ( P < 0.0001) than the mixed-sex (68.5:± 15.8 g against 52.8:± 13.9 g; meant S.D.) population. After the second, third and fourth year of rearing, live weight was 9.5% ( P = 0.0062) and 6.8% ( P = 0.0229) and insignificantly 5.1 % higher, respectively, in the all-female population. There was no significant difference, even after the fourth growing season, in live weight between all-females and bisexual scaly crossbreds (2,192 g± 478.3 and 2,206 g± 484.5, respectively). The percentage of the main edible parts (processed body, filleting yield) was significantly higher in both mirror and scaly, all-female populations at 3 yr of age but not significantly different in 4-yr-old fish. No distinct differences in survival and body shape of all-female and bisexual populations were found. The potential of all-female populations for commercial production is discussed. 相似文献
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Hana Buchtová Zdenka Svobodová Martin Kocour & Josef Velíek 《Aquaculture Research》2007,38(6):625-634
The aim of this study was to compare the amino acid (AA) composition of edible parts of three experimental groups of carp, i.e. a pure line of Přerov scaly carp (PS), a hybrid line of Přerov scaly carp and Northern mirror carp (PS × M72), and a hybrid line of Přerov scaly carp and Ropsha scaly carp (PS × ROP), with the quality of the edible parts of control hybrids of Hungarian and Northern mirror carp (M2 × M72) in harvest size (K3). A comparison between the controls (M2 × M72) and experimental carp (PS, PS × M72, PS × ROP) showed that their muscle tissues contained the same amounts of 10 AA [essential amino acids (EAA): Thr, Val, Leu, Phe, Lys, His; non‐essential amino acids (NEAA): Asp, Gly, Ala, Tyr] of the 16 AA determined. Glu, Asp, Lys and Leu were the AA with the highest muscle concentrations. The total EAAsum and NEAAsum contents in the fastest‐growing PS × ROP hybrid, in spite of specific differences found (P<0.05: Arg, Met; P<0.01: Pro), were practically identical to those found in the control group of M2 × M72 mirror carp. PS × ROP hybrid female and male muscle tissues differed (P<0.05) only in Met and Ala levels. Hard roes of experimental female carp (PS, PS × M72, PS × ROP) contained the largest quantities of Glu and Val, and that of control female carp (M2 × M72) the largest quantities of Glu and Gly. Hard roes of PS × ROP hybrids contained the largest quantities (P<0.01) of EAAsum (52.44±0.19%). Compared with hard roes, soft roes from all groups of carp contained more EAAsum (PS × ROP: 55.03±0.26%). The two most abundant AA in soft roes were Lys and Arg. The most abundant AA in the hepatopancreas in all carp groups were Glu, Asp, Leu and Arg. Hepatopancreas EAAsum levels in experimental carp (PS, PS × M72, PS × ROP) were significantly (P<0.05) lower than those in controls (M2 × M72). 相似文献
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三种鲤对暴发性鱼病抗病力的差异 总被引:9,自引:0,他引:9
本文报道三种鲤对嗜水气单胞菌引起暴发性鱼病的抗病力试验结果。当菌液浓度为6.0×10 ̄8CFU/ml,采用10 ̄0、10 ̄(-1)、10 ̄(-2)、10 ̄(-3)四个稀释度、0.3ml/尾注射剂量时,建鲤、野鲤和镜鲤的半数致死量(LD_(50))分别为10 ̄(-1.375)、10 ̄(-0.976)、10 ̄(-0.562)。这三种鲤的半数致死量差异显著(F>F_(0.05))。从四个方面研究了抗病机理:白细胞吞噬功能和补体替代途径(C_3旁路)杀菌能力,镜鲤较强于野鲤和建鲤,但无显著差异(F<F0.05);红细胞C_(3b)受体花环率和补体总量(单位/ml),是建鲤>野鲤>镜鲤,差异极显著(F>F0.01)。本研究结果还表明建鲤的红细胞C_(3b)受体花环率和补体总量稍高,但对暴发性鱼病病原(嗜水气单胞菌)较易感染。以上结果证明,不同品系鲤鱼对暴发性鱼病有种内特异性。 相似文献