Abstract

An allozyme analysis of five sets of polymorphic loci of the gynogenetic Prussian carp C. gibelio from Northern Ukraine made it possible to identify within this species 29 genetic forms of clonal and recombinant nature, which can be divided into two categories. The first one is represented by the clonal C. gibelio-1 biotype with the modal number of 156 chromosomes and several unique alleles, which distinctly differentiate this biotype from the diploid goldfish C. auratus. The second category is represented by the group of 28 biotypes designated as C. gibelio-2 of a clonal and recombinant nature. Specimens of this group have no allozymes that distinguish them from C. auratus. Within this group, 158 and 160 modal chromosome groups were discovered; each one has special genotypic combination for locus Aat-1. Apparently, the series of biotypes, which are differentiated by the modal chromosome number, emerged independently as a result of hybridization of different pairs of parental species way back in Eastern Asia. At the same time, the emergence of recombinant individuals with unique combinations of genotypes of five protein loci and their own chromosome number within the C. gibelio-2 clone is a secondary event related to the implementation of the inheritance mechanism, which combines cloning and Mendelian inheritance. There are reasons to believe that this mechanism is implemented in pseudogamous crosses of genetically close C. gibelio-2 females with C. auratus males, while the cloning takes place in crosses of C. gibelio-2 females with more distant C. carassius males.

中文翻译：

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乌克兰北部两性普鲁士鲤鱼（Carassius gibelio（Bloch，1782））居住区的多克隆结构：同工酶标记和染色体数目的比较分析

摘要

对来自乌克兰北部的雌性普鲁士鲤鱼C. gibelio的五组多态性基因座进行的同工酶分析，使得在该物种内鉴定出29种克隆和重组性质的遗传形式成为可能，该遗传形式可分为两类。第一个以克隆的C. gibelio -1生物型为代表，该生物型具有156条染色体的模态数和几个独特的等位基因，这些生物型与二倍体金鱼C. auratus明显不同。第二类由具有克隆和重组性质的28种生物型代表，命名为C. gibelio -2。本组标本都没有等位酶使其区别于鲫。在该组中，发现了158和160个模态染色体组。每个基因都有Aat -1基因座的特殊基因型组合。显然，由于不同的亲本物种对杂交回东亚的结果，一系列由型态染色体数区分的生物型独立出现。同时，在C. gibelio -2克隆中出现具有五个蛋白质基因座的基因型和其自身染色体数的独特组合的重组个体是与遗传机制的实施有关的继发事件，该机制结合了克隆和孟德尔遗产。我们有理由相信，这个机制在遗传上紧密的具假十字实现C.鲫-2雌性与C. auratus雄性，而克隆发生在C. gibelio -2雌性与较远的C. carassius雄性的杂交中。