| 齐氏田中鳑鲏的早期发育研究 |
| |
| 引用本文： | 王明星,钟俊生,石锅寿宽,間瀬浩子,上田高嘉,闫欣.齐氏田中鳑鲏的早期发育研究[J].上海海洋大学学报,2014,23(3):382-387. |
| |
| 作者姓名： | 王明星 钟俊生 石锅寿宽 間瀬浩子 上田高嘉 闫欣 |
| |
| 作者单位： | 上海海洋大学 水产与生命学院, 上海 201306;上海海洋大学 水产与生命学院, 上海 201306;日本观音崎自然博物馆, 横须贺 289-0813;日本观音崎自然博物馆, 横须贺 289-0813;日本宇都宫大学教育学部, 宇都宫 321-8505;上海海洋大学 水产与生命学院, 上海 201306 |
| |
| 基金项目： | 上海市重点学科水生生物学建设项目（S0701） |
| |
| 摘 要： | 通过对齐氏田中鳑鲏(Tanakia chii)人工授精和培育(22℃恒温环境)阶段早期发育的观察,描述了其仔稚鱼发育形态特征。初孵仔鱼卵黄囊饱满,呈淡黄色,表皮布满微突;3日龄仔鱼卵黄囊两侧向上突起,尾部鳍褶延展变大;6日龄仔鱼眼囊发育;8日龄仔鱼眼囊有黑色素,晶状体形成;11日龄仔鱼口形成,脑开始发育,体上有黑色素出现;15日龄仔鱼鳃沟和肛门形成,背鳍和臀鳍的鳍基出现,尾鳍下叶鳍条形成;21日龄仔鱼头与躯干分界明显,鳔分化为前鳔和后鳔,背部和臀部鳍条数目分别为8和10枚,身体黑色素连接成条带状,虽然残存有卵黄囊,但已经开口并摄食。31-36日龄仔鱼胸鳍呈膜状鳍褶,腹鳍出现鳍条,尾鳍呈深叉形。61-66日龄稚鱼,鳞片出现,体中线后半部具一条黑色素带,稚鱼出现集群游动现象。仔鱼体长的生长呈阶段性:1-26日龄仔鱼生长较为平缓;26-81日龄生长较快。综合21日龄仔鱼卵黄囊残留很少并开口摄食的特征,我们推测在孵化后21日为自然条件下齐氏田中鳑鲏的出蚌时间。同时,仔鱼的感觉、摄食、呼吸和游泳器官在早期阶段快速发育。这些器官在仔鱼的早期快速发育,使出蚌后的仔鱼在最短的时间内获得与早期生存相关的各种能力,提高了出蚌后仔鱼的生存能力。
|
| 关 键 词： | 齐氏田中鳑鲏 形态学观察 早期发育 |
| 收稿时间： | 2013/12/31 0:00:00 |
| 修稿时间： | 3/5/2014 12:00:00 AM |
Early development of the bitterling, Tanakia chii(Cyprinidae) |
| |
| WANG Ming-xing,ZHONG Jun-sheng,Toshihiro ISHINABE,Hiroko MASE,Takayoshi UEDA and YAN Xin.Early development of the bitterling, Tanakia chii(Cyprinidae)[J].Journal of Shanghai Ocean University,2014,23(3):382-387. |
| |
| Authors: | WANG Ming-xing ZHONG Jun-sheng Toshihiro ISHINABE Hiroko MASE Takayoshi UEDA and YAN Xin |
| |
| Institution: | College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China;College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China;Kannonzaki Museum of Natural History, Yokosuka 289-0813, Japan;Kannonzaki Museum of Natural History, Yokosuka 289-0813, Japan;Faculty of Education, Utsunomiya University, Utsunomiya 321-8505, Japan;College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China |
| |
| Abstract: | The early development characteristics of Tanakia chii larvae and juveniles were observed on the artificially fertilized and hatched fish. Newly hatched larva contained a substantial amount of yolk, with pale yellow in color and tiny tubercles on the surface. On day 3, a pair of hilly projections of yolk expanded toward both sides of the body, and the primordial fin-fold at the caudal portion developed. Optic cups developed into circular on day 6. Lens and melanin pigments began to form on the optic cups on day 8. On day 11, the mouth formed and brain developed, and melanophores were observed on the body. On 15 days old larvae, the branchial groove and anus had developed, the base of dorsal fin and anal fin formed, and caudal fin rays formed at the lower lobe. On day 21, the boundary of the head and trunk was clear, the gas-bladder divided into anterior and posterior lobes. The numbers of the dorsal fins and anal fins were 8 and 10 respectively. Even though the larva still had partial yolk-sac left, it started to eat to replenish energy, and the larvae began free swimming since then. During day 31 to day 36, rudiments of the pectoral fin appeared as small membranes, and some rays were formed in the pelvic fin. The caudal fin changed from a truncated to a deep forked shape. In 61 -63 days old juvenile, scales appeared on the body and a black longitudinal line appeared on the middle and latter parts of body. Since then, the fish always swam as a cohort. The growth curve of body length could divide into two stages: the growth rate was relatively slow from 1 to 21 days after hatching, and the growth rate was higher from 21 to 81 days old. We consider day 21 might be the age when Tanakia chii swims out of the mussels because we observed the larvae began to eat at that time. Furthermore, development of sensing organ, feeding, breathing and swimming apparatus is rapid in the early life stage of Tanakia chii, which may be important in providing the larvae with ability to cope with external environment and improve their survival rate after the larvae swim out the host mussel. |
| |
| Keywords: | Tanakia chii morphological observation early development |
| 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 |
|
