| 摘要: |
| 采用常规核型分析、Ag-NORs 及 C-带技术对美国红鱼的核型特征进行了研究。结果表明, 美国红鱼二倍体染色体数目为 48, 48 条染色体均为端部着丝粒染色体, 核型公式为 2n=48t, NF=48; 核仁组织区位于第 1 对同源染色体靠近着丝粒的位置; 美国红鱼所有染色体的着丝粒位置显示为 C-带阳性, 同时发现核仁组织区也表现为异染色质; 第 1 对染色体表现为长度多态性, 与核仁组织区多态性相关, 而非性染色体。 |
| 关键词: 美国红鱼, 核型, Ag-NORs, C-带 |
| DOI：10.11693/hyhz201201014014 |
| 分类号: |
| 基金项目:国家科技支撑计划项目, 2011BAD13B08 号; 国家自然科学基金项目, 31060355 号; 海洋渔业科学与技术浙江省重中之重学科开放课题资助项目, 20100115 号 |
附件 |
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| THE KARYOTYPE, Ag-NORs AND C-BANDING OF SCIAENOPS OCELLATA |
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WANG Xiao-Yan1, WANG Shi-Feng2, ZHANG Jian-She1, WU Chang-Wen1
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1.Marine Science College of Zhejiang Ocean University, National Engineering Research Center of Marine Facilities Aquaculture;2.Hainan University, Key Laboratory of Tropical Aquatic Biotechnology of Education Ministry
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| Abstract: |
| The karyotype characteristics of Sciaenops ocellata was investigated using conventional staining, Ag-NORs and C-banding. The results are as follows: S. ocellata had a diploid chromosome number of 48 and its karyotype formula was 48t, NF=48; The Ag-NORs appeared in chromosome 1; The centromere of all chromosomes and the Ag-NORs presented positive C-banding; The length polymorphism of Chromosome 1 was not sex related but co-occurrenced with the Ag-NORs. |
| Key words: Sciaenops ocellata, Karyotype, Ag-NORs, C-banding |
