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引言牛蛙在动物分类学上属于脊椎动物门,两栖纲,无尾目、蛙科,蛙属,是世界无尾两栖类中仅次于非洲林溪蛙的大型食用蛙类,体重可达1公斤以上。我国的牛蛙养殖自1959年开始,至1961年推广到全国十几个省市进行试养,前后不到4年时间,大多数地方都已绝种,仅厦门市水产养殖场仍在保种驯养。至八十年代初,发现湖南汉寿县南湖有少量60年代放流的牛蛙幸存,经湖南师大生物系等单位对其生殖生理和繁育技术进行了较系统的研究。
Introduction Bullfrog belongs to vertebrate door, amphibia, anura, frog family, genus Rana in animal taxonomy. It is the largest edible frog in the world without tail amphibian, and can weigh more than 1 kg. Bullfrog farming in China started in 1959 and was extended to more than 10 provinces and cities in the country for trial cultivation in 1961. In less than 4 years, most of the areas have been extinct. Only the aquaculture farms in Xiamen are still conserving their own species. By the early 1980s, a small amount of bullfrogs released in the 1960s in Nanhu, Hanzhou County, Hunan Province were found surviving. Their reproductive physiology and breeding techniques were systematically studied by units such as Biology Department of Hunan Normal University.