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前言脊椎动物三倍体是非常少见的。实验上三倍体一般都是借助温度刺激引起的。用极值温度刺激鲑科、刺鱼科、鲆鲽科的某些鱼类曾得到过三倍体。在自然界自发的自身三倍体有规律地出现是非常罕见的。前不久在坚头大麻哈鱼(Salmo gairdneri Richardson)中发现有自身三倍体。银鲫(Carassius auratus gibelio Bloch)单性种群存在三倍体。但是,有关它的产生问题至今尚不清楚。还知道有三种来自杂交种的不变的三倍体。其中之一是鳉鱼(Poecilia formosa),另外两种三倍体是Poeciliopsis属的P.lucida和P.monacha形成的杂
Preface The vertebrate triploid is very rare. Triploid in the experiment are usually caused by temperature stimulation. Some species of salmonidae, cichlididae and flounder families have been triploidized with extreme temperatures. It is very rare that spontaneous autotriosomes occur spontaneously in nature. Not long ago, autotriosomes were found in Salmo gairdneri Richardson. Triploid of the Carassius auratus gibelio Bloch haplogroup exists. However, the issue of its production is still not clear. It is also known that there are three invariant triploids from hybrids. One of them is Poecilia formosa and the other two are the hybrids formed by P. lucida and P. monacha of the genus Poeciliopsis