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采用尾静脉抽血法对斜带髭鲷厦门网箱养殖群体的染色体核型进行了研究,结果显示其核型公式为2n=46=4m+8sm+6st+28t,染色体总臂数NF=58,与喻子牛等对青岛近海斜带髭鲷的研究结果存在差异.通过对比发现厦门斜带髭鲷染色体2倍体数2n=46比青岛的少1对,但大型中部着丝点染色体数目又比青岛海域群体多出一对.从而推断斜带髭鲷厦门网箱养殖群体的染色体核型2n=46=4m+8sm+6st+28t可能是从核型2n=48=2m+8sm+2st+36t通过一对非同源的端部着丝点染色体经罗伯逊易位,着丝点融合形成了一中部着丝点染色体而形成的,进而造成斜带髭鲷不同地理种群间染色体的多态现象.
The karyotypes of Xiamen cages cultured in the genus Asparagus were studied by the tail vein blood drawing method. The karyotypes were 2n = 46 = 4m + 8sm + 6st + 28t, and the total arm number NF = 58 , And Yuzhu cattle and other offshore benthos in Qinghai Province, there are differences in the results of the study.According to the comparison found Xiamen xiaozhai two chromosome number 2n = 46 less than Qingdao, but the number of large central centromere chromosomes And more than a group of Qingdao waters more than one.Therefore deduced that the Chinese cichlid cysts Xiamen cage culture karyotype 2n = 46 = 4m + 8sm + 6st + 28t may be from the karyotype 2n = 48 = 2m + 8sm + 2st + 36t is formed by a pair of non-homologous end centromeric chromosomes by Robertsonian translocation and centromere fusion to form a central centromere chromosome, resulting in the polymorphism of chromosomes between different geographic populations phenomenon.