摘要
对中华绒螯蟹Z1幼体，分别投喂微绿球藻、三角稿指藻、钝顶螺旋藻粉，培育3天后，测定各试验组幼体变态成活率、发育期及水质状况。结果表明，虽然微绿球藻组幼体发育期较其他组延长23．5h±5．5h，但培育效果优于其他两组，其适宜的使用浓度为50～200×104／mL。在自然海水及消毒海水中，适宜浓度的藻类对中华绒螫蟹Z1幼体的变态成活率无明显影响。净化稳定水质的能力以微绿球藻组为好，能抑制有害藻类过度繁生，提高Z1幼体的变态成活率，微绿球藻不失为中华绒螫蟹Z1幼体的一种良好饵料，值得推广使用。
Microalgae are the primary food source for the first stage (Z1) of Chinese mitten crab, Eriochelr sinensis. The paper dealed with the effects on the metamorphosis and survival rate of Z1 of Chinese mitten crab of three species of microalgae Nannochloropsis oculata, Phaeodactylum tricornutum and the powder of Spirulina platensis. The result was revealed: (1) The metamorphosis and survival rate of Z1 was significantly affected by the concentrations of microalgae in the media. 50× 10 4 cells/mL to 200×104 cells /mL was the suitable density (p>0.05 ). (2) In the sterile seawater, There was no significant difference (p>0. 05) in the metamorphosis and survival rate of Z1 between the groups which fed with the three microalgaes in its suitable density respectively. (3)The duration of Z1 fed with N.oculata was prolonged 23. 5 ± 5. 5 hrs, but the difference can be eliminated by being fed simultaneously with egg yolk or other inert diets. (4)N. oculata could not only inhibit the toxin from red-tide but also stabilize the seawater quality in the pool more effectively than the others. N. oculata is a good food source in breeding the first stage larvae of Chinese mitten crab.
出处
《上海水产大学学报》
CSCD
1999年第3期202-209,共8页
Journal of Shanghai Fisheries University
关键词
微绿球藻
三角褐指藻
钝顶螺旋藻
中华绒螯蟹
Nannochloropsis oculata, Phaeodactylum tricornutum, Spirulina platensis, Zoea Ⅰ of Eriocheir sinensis, metamorphosis and survival rate
