The Formation of the Polyploid Hybrids From Different Subfamily Fish Crossings and Its Evolutionary Significance

• DOI: 10.1534/genetics.107.071373
• Publication Date: 2007-05-17T01:11:03Z
• Authors: Shaojun Liu; Qinbo Qin; Jun Xiao; Wenting Lu; Jiamin Shen; Wei Li; Jifang Liu; Wei Duan; Chun Zhang; Min Tao; Rurong Zhao; Jinpeng Yan; Yun Liu
• Keywords: Polyploid; Subfamily

This study provides genetic evidences at the chromosome, DNA content, fragment and sequence, morphological levels to support successful establishment of polyploid hybrids red crucian carp x blunt snout bream, which belonged a different subfamily fish (Cyprininae Cultrinae subfamily) in catalog. We successfully obtained sterile triploid bisexual fertile tetraploid (RCC) (female symbol) bream (BSB) (male as well their pentaploid hybrids. The possessed 124 chromosomes with two sets from RCC one set BSB; had 148 BSB. females produced unreduced eggs that were fertilized haploid sperm BSB generate 172 three RCC. ploidy triploid, tetraploid, confirmed by counting chromosomal number, forming karyotype, measuring content erythrocyte nuclear volume. similar fragments PCR amplified sequenced hybrids, parents, indicating molecular relationship markers. In addition, this also presents results about phenotypes feeding habits discusses formation mechanism It is first report on crossing parents chromosome number vertebrates. potentially interesting both evolution breeding.