| 3个地理种群三角帆蚌育珠相关性状比较及壳重的通径分析 |
| |
| 引用本文： | 闻海波,顾若波,曹哲明,聂志娟,杨彬彬,华 丹.3个地理种群三角帆蚌育珠相关性状比较及壳重的通径分析[J].上海海洋大学学报,2012,21(2):161-166. |
| |
| 作者姓名： | 闻海波 顾若波 曹哲明 聂志娟 杨彬彬 华 丹 |
| |
| 作者单位： | 中国水产科学研究院淡水渔业研究中心 农业部淡水渔业和种质资源利用重点实验室;中国水产科学研究院淡水渔业研究中心 农业部淡水渔业和种质资源利用重点实验室;中国水产科学研究院淡水渔业研究中心 农业部淡水渔业和种质资源利用重点实验室;中国水产科学研究院淡水渔业研究中心 农业部淡水渔业和种质资源利用重点实验室;南京农业大学 无锡渔业学院;弗吉尼亚理工学院暨州立大学 自然资源与环境学院 |
| |
| 基金项目： | 公益性行业（农业）科研专项（200903028）；中央级公益性科研院所基本科研业务费专项资金项目（2011JBFA18） |
| |
| 摘 要： | 对3个野生三角帆蚌种群的贝壳形态及珍珠层颜色特征进行比较分析。结果表明:洞庭湖(DT)种群贝壳为短圆型,太湖(TH)种群为长扁型,而鄱阳湖(PY)种群介于两者之间;洞庭湖种群的体重指数、壳重指数、壳宽指数及壳厚指数等育珠相关性状均显著高于其他两个种群。对壳重的通径分析表明:3个群体中,壳厚对壳重的直接影响最大,壳长次之,壳高、壳宽主要通过壳厚和壳长间接影响壳重。在珍珠层边缘区域,后端出现紫色的比例均高于前端(P=0.055)。3个种群珍珠层颜色存在显著的种群特征:鄱阳湖种群中70%个体珍珠层为紫色或淡紫色,而洞庭湖和太湖种群在边缘区前端以白色为主,后端以紫色和淡紫色为主,中央区以紫色和淡紫色为主;在太湖种群中出现特征性的淡蓝色(20%);鄱阳湖种群珍珠层中出现不规则形态的金黄色斑频率最高(100%),洞庭湖种群中出现频率为45%,而太湖种群最低(15%)。综合分析认为:洞庭湖种群育珠相关性状显著优于鄱阳湖和太湖种群,其体型有利于作育珠蚌受体选育,培养大颗粒优质珍珠;太湖种群体型为长扁型,作为小片蚌可以增加小片的数量,且培育淡蓝色珍珠具有一定潜力;鄱阳湖种群珍珠层紫色特征明显,有利于紫色小片蚌品系的人工选育。研究亮点:珍珠颜色是评价珍珠品质及价值的重要指标之一。本文对三角帆蚌3个地理种群的贝壳形态特征进行了系统的比较,并首次研究了贝壳珍珠层颜色的分布特征。不同种群三角帆蚌贝壳形态、珍珠层颜色分布存在明显种群特征,鄱阳湖种群珍珠层颜色以紫色为主,太湖种群出现特征性淡蓝色。本研究结果对开展三角帆蚌珍珠单色品系,如紫色珍珠、白色珍珠或淡蓝色珍珠品系的人工选育研究具有重要参考价值。
|
| 关 键 词： | 三角帆蚌 贝壳形态 育珠性状 珍珠层颜色 |
Comparison of morphological traits related to pearl performance in Hyriopsis cumingii from three geographical populations and path analysis on shell weight |
| |
| WEN Hai-bo,GU Ruo-bo,CAO Zhe-ming,NIE Zhi-juan,YANG Bin-bin and HUA Dan.Comparison of morphological traits related to pearl performance in Hyriopsis cumingii from three geographical populations and path analysis on shell weight[J].Journal of Shanghai Ocean University,2012,21(2):161-166. |
| |
| Authors: | WEN Hai-bo GU Ruo-bo CAO Zhe-ming NIE Zhi-juan YANG Bin-bin and HUA Dan |
| |
| Institution: | 1.Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization,Ministry of Agriculture,Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences,Wuxi 214081,Jiangsu,China;2.Wuxi College of Fisheries,Nanjing Agriculture University,Wuxi 214081,Jiangsu,China;3.College of Natrual Resource and Environment,Virginia Polytechnic Institute and State University,VA 24061,USA) |
| |
| Abstract: | Morphological traits related to pearl performance were compared in triangle pearl mussel Hyriopsis cumingii from three geographical populations.The external feature of triangle mussel from Dongting Lake (DT) and Taihu Lake (TH) is round plump type and long flat type respectively. DT population is significantly higher than other two populations in traits related to pearl performance, inculding body weight index, shell weight index, shell width index and shell thickness index. Path analysis indicates that shell thickness has the greatest direct effect on shell weight, and shell length is the sencondary direct factor, whereas shell height and shell width have greater indirect effect. The ratio of purple color in posterior margin area is higher than that in the anterior in all three geographical populations (P = 0.055). More than 70% individuals from Poyang Lake (PY) have purple or lavender nacre color in all areas, while most of individuals from DT and TH have white nacre in anterior margin area, and show purple or lavender in posterior margin and central nacre area. There are 20% individuals with light blue nacre observed only in TH population. The golden yellow mottling with irregular shape randomly appears in PY population with higher ratio (100%) than DT (45%) and TH population (15%). All results show that DT population shows more suitable morphological triats related to pearl performance which can be used as furture broodstock in recipient mussel seletive breeding, while TH population has potential for donor mussel and new strain with light blue narce selection, and PY population shows greater potential for new strain with purple nacre selection. |
| |
| Keywords: | triangle pearl mussel shell morphology traits to related pearl performance nacre color |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《上海海洋大学学报》浏览原始摘要信息 |
| 点击此处可从《上海海洋大学学报》下载免费的PDF全文 |
|
