| 刘琨,张乐乐,刘刚,陈四清,边力,孟乾,刘长琳.2018.丝背细鳞鲀外部形态特征.动物学杂志,53(3):389-398. |
| 丝背细鳞鲀外部形态特征 |
| Morphological Characteristics of Threadsail Filefish (Stephanolepis cirrhifer) |
| 投稿时间：2017-04-12 修订日期：2017-12-11 |
| DOI：10.13859/j.cjz.201803008 |
| 中文关键词: 丝背细鳞鲀 外部形态 可量性状 可数性状 |
| 英文关键词:Threadsail Filefish, Stephanolepis cirrhifer External shape Morphometic characters Meistic characters |
| 基金项目:中国水产科学研究院黄海水产研究所基本科研业务费（No. 20603022017014） |
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| 中文摘要: |
| 以黄海捕捞的丝背细鳞鲀（Stephanolepis cirrhifer）为实验样本，共100尾，体全长7.00 ~ 14.50 cm，体重7.96 ~ 136.54 g。对其外部形态进行观察绘图描述，分析其鱼体侧面和头部、第二背鳍鳍条和鳞片的形态特征。对可量性状与可数性状进行测量和线性回归分析。对背鳍鳍条、尾鳍鳍条、臀鳍鳍条和胸鳍鳍条数量进行统计。观察发现，（1）体表被形态多样的绒状鳞片，鳞片为形似盾鳞的骨鳞，由基板和骨质凸起组成；腹鳍棘与腹部之间具有一可收缩的皮质三角形结构，体表布满黑色条纹与黑色斑点，以眼部为中心向外延伸出6条主侧线（背侧线、框上线、框下线、前鳃盖线、下颌线、上颞线）为其外部形态的明显特征。（2）线性相关性最好的是全长（TL）/体长（SL），其比值变动范围最小，雌雄差异小，相关方程为：SL = 0.8239TL﹣0.0471（R2 = 0.9763）；线性相关性最差的是头长/吻长，其比值不仅变动最大，而且雌雄的差异最大。（3）体长（SL）与体重（W）的关系为：W = 2.3743e0.2803SL（R2 = 0.96）；雄性：W = 2.5406e0.2737SL（R2 = 0.96），雌性：W = 2.0328e0.2954SL（R2 = 0.95）。（4）鱼鳍鳍条数量：第一背鳍为两根背鳍棘，第二背鳍30 ~ 34；臀鳍29 ~ 34；胸鳍12；尾鳍13；腹鳍为一个腹鳍棘。雌雄第二背鳍的第二根鳍条长度存在差异，雄性长度比雌性长约1/6 ~ 1/5。丝背细鳞鲀在黄海的出现，说明该鱼种洄游分布范围已经扩大到黄海。 |
| 英文摘要: |
| A total of 100 Threadsail Filefish (Stephanolepis cirrhifer) (length 7.00﹣14.50 cm, weight 7.96﹣136.54 g) were collected from Yellow Sea as experimental samples. We then observed and measured every sample by light microscopy and vernier caliper. The features of the front view of the head, side view of the body, second dorsal fins and scales were analyzed. We then measured the morphological indexes of the fish body, and carried out linear regression analysis. The numbers of dorsal fin rays, caudal fin rays, anal fin rays, pectoral fin rays were also counted. It was shown that the surface of the body was covered with a variety of fleece scales, with. bony scales resembling dentile. Each piece of scale consisted of a base plate and a bony bulge. Between the ventral spine and abdomen was a triangular contractile cortical structure; The fish skin was full of black spots and stripes. The other typical characteristic of Threadsail Filefish was that six main lateral lines were extended from each eye. The variation of total length/standard length was minimum and the difference between female and male was the lowest, and the correlation equation was SL = 0.8239TL﹣0.0471 (R2 = 0.9763), which had the best linear correlation coefficient. The calculation of head length/proboscis length and head length/eye diameter had the lowest linear correlation coefficient, and the variation and difference between female and male were the highest. The general correlation equation of standard length and weight was W = 2.3743e0.2803SL (R2 = 0.9577), and it was W = 2.5406e0.2737SL (R2 = 0.9638) for male ones, W = 2.0328e0.2954SL (R2 = 0.9490) for female ones. The first dorsal fin consisted of two dorsal fin spines; the number of second dorsal fin was 30﹣34; The number of anal fins was 29﹣34; the number of ectoral fins was 12; the number of tail fins was 13; the pelvic fin degenerated into pelvic fin spines. The external difference between the female and male ones was the length of the second root of the second dorsal fin. The length of the second fin in males was about 1/6 to 1/5 of that in females. It appears that the distribution of this species has been extended to the yellow sea. |
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