| 摘要: |
| 中国鲎肉供食用,特别是用鲎血提取鲎试剂获得成功后,它的利用价值已引起人们的重视。关于鲎的生物学研究,前人已有报道,但对中国鲎人工育苗试验研究,在我国尚未见有报道,作者于1981—1982年在室内水池中,对亲鲎的产卵、受精、孵化、幼体培育和饵料等进行了研究,并于1981年孵出幼鲎28265个,培育115天,成活率达95％以上,初步获得育苗成功。这一研究成果,为人工增殖药用动物,提供了苗种。 |
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| THE RESEARCH OF ARTIFICIAL INCUBATION OF CHINESE HORSESHOE CRAB |
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| Abstract: |
| The meat of Chinese horseshoe crab (Tachypieus tridentatns Leach, 1819) is edible. How to use it in this connection has drawn much attention, especially since the horseshoe crab-reagent was successfully extracted from horseshoe crab’s blood. This kind of reagent is being used on medical examination to diagnose many diseases, and also in the aspects of canned food inspection and electron bionics. It has, therefore, the practical value and is of significance in research work of artificial breeding so as to develop aquatics and supply larvas for medical purpose. a) We put the adult couple (male & female) of well selected kinhorseshoe crab into a spawning pond with a sheet of sand 20-30 cm thick and a flowing flash for achieve good results of excreting ovulation and sperm. b) The zygotes were incubated 36-43 days in sea sand and 42-54 days in water with water temperature 26℃-31℃, specific gravity 1.012-1.020, pH value 7.5-8.3, making more than ninety-five per cent at the incubation rate, and the larvas number to 28265 in all. c) The larvae were nursed in a container in three different conditions: delicate sand bed, coarse sand bed, and no sand bottom, changing water and throwing baits once a day. The best concentrated baits were Platymonas dicrateria zhaniiangensis Hu, Chaetoceros muelleri Zommermann and a little diation plus some organic substance etc. The larvae shed first fime within 43-50 days in delicate sand bed, within 72-86.8 days in coarse sand bed, under the conditions of 25℃-30.5℃, specific gravity 1.014-1.020, pH value 7.5-8.3 Oxygen-solute 3.5mg/L on more. But in no sand bottom the larvae shed nothing even for 115 days in same conditions. However, the survival rates after 115 days in all the above mentioned conditions came up to ninety five per cent and more. |
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