首页> 美国卫生研究院文献>Comparative Cytogenetics >Cytogenetic studies in three octopods Octopusminor Amphioctopusfangsiao and Cistopuschinensis from the coast of China
【2h】

Cytogenetic studies in three octopods Octopusminor Amphioctopusfangsiao and Cistopuschinensis from the coast of China

机译:来自中国沿海的八爪鱼两脚章鱼和梭鱼三种章鱼的细胞遗传学研究

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

To provide markers to identify chromosomes in the genome of octopods, chromosomes of three octopus species were subjected to NOR/C-banding. In addition, we examined their genome size (C value) to submit it to the Animal Genome Size Database. Silver staining revealed that the number of Ag-nucleoli was 2 (Octopusminor (Sasaki, 1920)), 2 (Amphioctopusfangsiao (d’Orbigny, 1839)) and 1 (Cistopuschinensis Zheng et al., 2012), respectively, and the number of Ag-nucleoli visible was the same as that of Ag-NORs on metaphase plates in the same species. In all analyzed metaphases, Ag-NORs were mainly located terminally on the long arms of chromosomes 3 (3rd) of O.minor and on the short arms of chromosomes 4 (4th) of A.fangsiao, whereas only one of the chromosomes 23 (23rd) was found Ag-NORs of C.chinensis. C-bands were localized predominantly in the centromeric regions of chromosomes in the three species, while other conspicuous stable C-bands were observed in terminal regions, including the Ag-NORs. That means these three chromosome pairs (3rd, 4th and 23rd) could be considered species-specific cytogenetic markers. The mean C values of O.minor, A.fangsiao and C.chinensis were 7.81±0.39 pg (0.070 pg per unit length), 8.31±0.18 pg (0.068 pg per unit length) and 5.29±0.10 pg (0.038 pg per unit length), respectively, and results showed that C values of the three species were not proportional to the relative length of the chromosomes. These cytogenetic characteristics will provide more theoretical foundation for further researches on chromosome evolution in octopods.
机译:为了提供标记来识别章鱼基因组中的染色体,对三种章鱼物种的染色体进行了NOR / C谱带分析。此外,我们检查了它们的基因组大小(C值),以将其提交给动物基因组大小数据库。银染表明,Ag-核仁的数量分别为2(八爪鱼(Sasaki,1920)),2(Amphioctopusfangsiao(d'Orbigny,1839))和1(Cistopuschinensis Zheng等人,2012)。可见的Ag-核仁与相同物种的中期板上的Ag-NOR相同。在所有已分析的中期,Ag-NORs主要位于O. minor 的3号染色体长臂(3 rd )的短臂上。 A“的第4号染色体(第4 )臂。 > fangsiao ,而仅发现23号染色体中的一个(23 rd )的Ag-NORs为 C。 chinensis 。 C带主要位于这三个物种的染色体着丝粒区域,而在末端区域还观察到了其他明显的稳定C带,包括Ag-NOR。这意味着这三个染色体对(3 rd ,4 th 和23 rd )可以被认为是物种特异性的细胞遗传标记。 O。 minor 的平均 C 值。 em> A。 fangsiao C。 chinensis 分别为7.81±0.39 pg(每单位长度0.070 pg),8.31±0.18 pg(每单位长度0.068 pg)和5.29±0.10 pg(每单位长度0.038 pg),结果显示这三个物种的 C 值与染色体的相对长度不成比例。这些细胞遗传学特征将为章鱼染色体进化的进一步研究提供更多的理论基础。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号