| 摘要: |
| 应用1979年6月－1980年8月渤海湾环境调查中的青鳞鱼及斑鱼祭卵和仔鱼资料，以几种数学方法对其早期发育阶段的形态及分布特征进行初步探讨。结果表明，两种鱼的各期卵径、卵黄径均差异显著；两种仔鱼体形相似，但在卵黄吸收殆尽前后体形均有较大的变化；它们的体高、头长、标准长、肛前长，眼径之间两两显著相关，仔鱼从Ⅰ期到Ⅱ变化的是一些大长度量，而肛前和肛后肌节数变化不大。两种鱼卵及仔鱼皆出现在整个海区，青鳞鱼产卵期为4－9月，盛期为5－7月；斑鱼祭产于5－8月，盛期在5－6月。从鱼卵到仔鱼的发育过程中，青鳞负有离岸移动趋向，斑鱼祭有向岸移动趋势。 |
| 关键词: 青鳞鱼 斑鱼祭 卵 仔鱼 数学方法 生态学 |
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| COMPARISON RESEARCH ON EGGS AND LARVAE OF HARENGULA ZUNASI BLEEKER AND CLUPANODON PUNCTATUS (TEMMINCK & SCHLEGEL) IN BOHAI BAY |
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Kong Libo1, Sun Jiren1, Yang Donglai1, Liu Changan2
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1.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071;2.Fishery College Qingdao Universty of Ocean, Qingdao 266003
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| Abstract: |
| This paper reports comparison research on the morphological features and abundance distribution of eggs and larvae of Harengula zunasi Bleeker and
Clupanodon punctatus (Temminck & Schlegel) using mathematical methods such as t-test, linear regression with an independent variable, principal component analysis and hierarchical cluster analysis etc.. The specimens were taken from 1979 to 1982 in Bohai Bay by plankton nets by the Institute of Oceanology, Chinese Academy of Sciences. The main results were as follows:
1. Egg and yolk diameters between these two species in each stage were significantly different. Average egg and yolk diameters of Harengula zunasi were 1.47 - 1.56 mm and 0.81 - 0.92 mm , respectively; and that of Clupanodon punctatus were 1.28 - 1.36 mm and 0.96 - 1.01 mm respectively.
2. The larvae of these two species had quite similar shapes, and their change patterns were of apparently similar pattern when the yolks were absorbed.
3. There was significant correlation between any two among the five length features (body height, head length, standard length, preanal length and eye diameter) of each of these two species. They changed obviously from I to II stage of larvae, but the numbers of preanal and postanal myomers did not change.
4. The eggs and larvae of Harengula zunasi and Clupanodon punctatus occurred in the whole surveyed area. The spawning season of Harengula zunasi was from April to September, mainly from May to July, that of Clupanodon punctatus was from May to August, mainly from May to June. Offshoreward migratory tendency was apparent as Harengula zunasi developed from eggs to larvae. Shoreward
migratory tendency was apparent as Clupanodon punctatus developed from eggs to larvae. |
| Key words: Harengula zunasi, Clupanodon punctatus, Eggs, Larvae, Mathematical methods, Ecology |
