Genetic, Breeding and Reproduction Studies on Teleost

这项国际合作研究的主要目的是与韩国科学家在鱼类遗传学，育种和繁殖领域进行合作，以建立日本和韩国在同一领域的强大个人联系。我们对韩国鱼类遗传、育种和繁殖的研究现状并不了解。我们首先计划交流有关鱼类遗传学和繁殖的想法和信息，并在kon-kuk举行研讨会。韩国海洋研究开发院（Korea Ocean Research & Development Institute）。从染色体操作技术的有效应用和水产养殖中存在的问题出发，对染色体操作技术进行了有益的探讨。三倍体雌性是有用的，因为它们都是不育的，并且在产卵季节生长。但三倍体雄性具有生育能力，有参与自然产卵的可能。这可能会在自然群体中造成一些遗传污染，因为当三倍体雄性产生异常胚胎时， ...更多信息 和正常女性交配。问题是，操纵气体极有可能诱发染色体改变。受精后即刻电融合卵的出现为鱼类嵌合体的形成开辟了新的研究领域。这一研究领域在韩国是新的。从鱼类育种的角度来看，冷冻保存的精子可能在未来的水产养殖中有一定的应用价值。该技术可应用于牙鲆的养殖。在韩国济州岛和釜山附近的沿海沃茨，日本比目鱼的海水养殖正在蓬勃发展。日本比目鱼的性别控制也是釜山国立水产大学的课题。日本比目鱼的性别控制和操纵在日本已经建立，因为雌性的生长比雄性快，并且在这种养殖中保留所有雌性种群将获得经济效益。在成熟的肝脏中卵黄蛋白原的产生是常见的，在鱼类中受E分泌的控制。但在本研究中发现，鳗鱼卵黄蛋白原的产生也受GTH和E的控制。这一结果是从体外肝细胞培养中获得的。日本和韩国在鱼类遗传学和繁殖学方面的研究水平存在较大差异。Park Kon-kuk大学教授提出了继续在鱼类遗传学，育种和繁殖方面进行合作研究的建议。我们正在计划日本和韩国之间的未来合作工作的基础上交流的信息和研究工作在目前的研究成果。少

The main purposes of this international cooperative research works with korean scientists in the fields of genetics, breeding and reproduction in fishes are to establish strong personal connection between Japan and Korea in the same field. We did not know about the present situations in the research of fish genetics, breeding and reproduction in korea. We first planned to exchange idea and information on the fish genetics and reproduction and had seminars at kon-kuk. University and Korea Ocean Research & Development Institute. The discussion on the chromosome manipulation on the basis of profitable use of the techniques and the problems in the aquaculture was fruitful.The triploid females are useful because they are all infertile and grow through the spawning season. But triploid males are fertile and have possibility to be involved in the natural spawning. This may cause some genetic pollution in the natural population because the triploid males produce abnormal embryogenesis when the … More y mate with normal females. The problem is that the manipulation gas strong possibility to induce chromosomal changes. The Electrically fused-eggs caused just after fertilization make new research field of chimera formation in fishes. Such research field is new in Korea. The cryopreserved sperms may be useful in the future aquaculture in a sence of fish breeding. This technique may be applied to the breeding of Japanese flounder. In Korea, mariculture of Japanese flounder is now prosperous in cheju-Do and in the coastal waters around pusan. the sex control of the japanese flounder was also topic at National Fisheries University of Pusan. Sex control and manipulation in Japanese Flounder is already established in Japan, because the growth of females is more rapid than males and economical benefit will be obtained by keeping all female population in this aquaculture. Vitellogenin production in the liver at maturation is common under the control of E secretion in fish. But interesting results were obtained in the present research that the Vitellogenin production was also under the control of GTH as well as E in eels. This result was obtained from the liver cell culture in Vitro. The research levels between Japan and Korea in the fields of fish genetics and reproduction are quite different. The proposal from Professor Park Kon-kuk University to continue cooperative research works on the fish genetics, breeding and reproduction was made. We are planning future cooperative works between Japan and Korea on the basis of the Fruitful results of the exchange of the information and research works in the present studies. Less