【作者】 刘金海；

【导师】 杨圣云；

【作者基本信息】 厦门大学 ， 海洋生物学， 2006， 博士

【摘要】 中国团扇鳐分布于中国、朝鲜西南部和日本本州中部以南水域,为小型底层鱼类。本论文采用常规生物学方法、显微和超微组织学方法,对中国团扇鳐的年龄和生殖特性进行了研究;采用常规生化技术,测定了中国团扇鳐肌肉、软骨、肝脏、卵子、卵黄囊和胚体的含水率和含油率;利用气相色谱技术,对中国团扇鳐肌肉、肝脏、卵子、卵黄囊和胚体脂肪酸进行了测定,并结合采样渔场(闽南近海)环境条件、中国团扇鳐年龄、生殖及生化组成(含水率、含油率、灰份、脂肪酸等),对中国团扇鳐生化生态进行了分析。取得了如下的研究结果:1.中国团扇鳐为非等速生长鱼类,其脊椎骨年轮多为单带型、部分为双带型、极少为多带型,年轮形成期为1月份～3月份。3月份为群体形成年轮的高峰期。渔获物由1-7龄鱼组成,群体平均年龄为3.63,以3龄鱼占绝对优势,其次是4龄鱼和5龄鱼,分别占渔获物的40.34%、25.21%和5.04%。2.中国团扇鳐椎体半径与全长的关系为:雌鱼:TL雌鱼= 107.08R + 178.79(r=0.9023)雄鱼:TL雄鱼= 101.93R + 203.01(r=0.7228)两个方程回归显著,能较好的反应雌、雄中国团扇鳐全长(TL)与椎体半径(R)的关系,基本符合实际情况。3.中国团扇鳐体长-体重的关系为:雌鱼:W=1.0×10-5×L2.8808(r=0.9757)雄鱼:W=2.0×10-5×L2.7635(r=0.9688)方程回归显著,体长-体重关系式比较符合闽南近海中国团扇鳐体长体重关系。方程幂指数为2.8808和2.7635,说明闽南近海中国团扇鳐属于非等速生长的鱼类。4.中国团扇鳐精巢结构类型是背面外侧壶腹生成区的纵行带状分布及由背至腹的扇形分布形式,其结构类型为扇形;中国团扇鳐雌鱼卵巢为裸露型卵巢,重量范围在0.22g-36.25g;左侧卵巢重量在0.22g-25.98g之间,右侧卵巢重量在0.32g-36.25g之间,均为功能性卵巢,各期卵细胞发育是分批次同步进行的。更多还原

【Abstract】 Platyrhina sinensis is a minitype fish that lives on the sea bottom of China, southwest of Korea, south of central Japan. Here, the age and the reproductive characteristics of P. sinensis are studied with common biological method, microstructure and ultrastructure method; Measure the percentages of water and oil that contained in the muscle, cartilager, liver, yolk-sac and embryo of P. sinensis with common biochemical technique; Measure the fatty acid that contained in the muscle, liver, eggs, yolk-sac and embryo of P. sinensis with gas chromatography. And research on the biochemical ecology of P. sinensis depends on the environment of fishing grounds (Minnan marine water), the age composition, the reproduction and the biochemical composition of P. sinensis. The following results are finally gained:1. P. sinensis is not considered to be an isometry growing fish. Most annuli of spinal cord are single band, some are double bands, but multi-bands are quite scarce. Annuli are usually forming from January to March. And March is the peak time of population annuli forming. The age composition of the population is from 1-7GR, and their average age is 3.63. The percentage of group 3GRs is 40.34%, it is more than 4GRs (25.21%) and 5GRs (5.04%).2. The R (Centrum radius) vs. TL(total body length ) regression equations is: Female: TL = 107.08R + 178.79(r=0.9023) Male: TL = 101.93R + 203.01(r=0.7228) These two equations well reflect the relationship between total body length and Centrum radius.3. The length-weight relationship is: W=1.0×10-5×L2.8808(r=0.9757), W=2.0×10-5×L2.7635(r=0.9688).These two equations more or less reflect the relationship between body length and the weight of P. sinensis in Minnan marine water. The power exponents of the equation are 2.8808 and 2.7635, so it is not considered to be an isometry growing fish.更多还原