【摘要】 <正> 鲎(Tachypleus tridentatns)隶属于节肢动物门、肢口纲、剑尾目动物。鲎在我国的浙江宁波以南沿福建、广东至广西的沿海均有分布,尤以北部湾的资源较为丰富。在繁殖的季节(每年5—8月)里,雌雄成对在涨潮时游至岸边中潮线的沙滩上,挖穴产卵受精孵化。对鲎实验生态方面的研究,以前生物学家很少报导。鲎的用途,早在“本草纲目”中已列为药用。同时,也是海产食品,其味鲜美如蟹。随着科学的发展,在本世纪六十年代末,又更多还原

【Abstract】 There are few documents at home and abroad to report on a research into the artificial cultivation of chinese horseshoe crab (Tachyple Tridentatus) and blood-draw- ing repeatesly. For that reason, we are studing and producing reagent of horseshoe crab on a large scale simultaneously, in order to protect and utilize the natural resou- rces better. It is, therefore, especially important to proceed in the artificial cultiv- ating and blood-drawing repeatedly study. The data which this article shows the ex- periment from May, 1982 to October, 1983 manifested the testing results of the artificial oultivating and blood-drawing repeatedly in the cement pool indoor. A. Material and method: The horseshoe crab by testing was bought from market Beihai, fed temporarily and numbered. Dividing them into three cement pools, (Two in size by 200×200×100 cm. and one by 240×180×100 cm.) We fed them a meal changed all water once per day. The quantity of baits was 2--4 percent for their body-weight. The bait was mainly of Mcretrix meretrix linne meat with others as physcosoma esculenta, Ostrea rvularis meat, Amussium Japonica meat, sepunculus nudus, Ulva lactuca ect. And also put them through in different density of feeding, capacity and interyal of blood-drawing tests ect. B. Testing results: a) The living rate of non-blood-drawing group was 83. 3%. And the testing gro- up which was adopted 50 days blood-drawing interval was 75% under sixteen monhs’ experiment of feeding and blood-drawing. b) The density of pultivating was suitable for 2. 5--3 pieces and less than 2 pieces per square metre respectively when water temperature was under 25℃ and over 25℃. c) The quantity of their eating eating baits was different just as the water temperature changed. The most quantity needed was at the water temperature bet- ween 22oC--28t; under 18℃ or Over 32℃ eating less; under 16℃ almost stopped eating. The weak began dead. When water temperature wasa at 10℃. They would be normal in life during the salt degree at 23. 68--28. 91‰. They would be normal in movement and eating whwn oxygen involved in water over 4 mm/1. But less movement under 3 mm/1. d) In the case of water temperature at 20°--30℃, salt degree at 22. 77--28. 91‰ and eating baits normally, the capacity of blood-drawing a time in female and male horseshoe crab were 3--4ml/100g and 5--6ml/100g for the body weight of themselves respectively. e) The time interval of blood-drawing was around 50 days better.更多还原