摘要
研究了不同温度对内刺盘管虫Hydroides ezoensis幼虫生长发育及变态的影响。结果表明：24℃下内刺盘管虫的孵化率最高（85．20％±2．36％），30℃下孵化率仅为1．70％±1．70％，按孵化率大小依次为24℃〉21℃〉18℃〉27℃〉30℃；30℃下孵化时畸形率、死亡率大幅增加，18～27℃下孵化正常，且27℃下孵化时间最短（511min）；5种温度下内刺盘管虫幼虫圆盘直径大小随时间变化呈“弧”形分布，体长则逐渐上升；18℃下幼虫在试验第12天全部死亡，而在21、24、27、30℃下浮游期存活率分别为75．73％±4．55％、74．03％±5．98％、64．43％±4．20％、58．67％±8．54％；变态率以24℃下最高（60．45％±7．52％）。
The effects of different temperatures （ 18, 21, 24, 27, and 30 ℃ ） on growth, development and metamorphism of Hydroides ezoensis larvae were studied in the present experiment. The optimum temperature for incubation of H. ezoens/s was found at 24 ℃ with the hatching rate of 85.20% ± 2.36%. The minimal hatching rate of only 1.70% ±1.70% was observed at30 ℃ with the rang as24 ℃ 〉21 ℃ 〉18 ℃ 〉27 ℃ 〉30 ℃. There was significant increase in the malformation and mortality in group 30 ℃ compared to other groups. The larvae were hatched normally from 18 ℃ to 27 ℃, the shortest incubation period of 511 minutes at 27 ℃. The larvae had a large diameter at first and then had small diameter as they developed and growth. For group under 18 ℃, all larvae died at the 12th day. Survival rates of the pelagic larvae was found to be 75.73% ±4.55%, 74.03% ±5.98%, 64.43% ±4.20%, and 58.67% ±8.54% for the groups 21, 24, 27 ℃, and 30 ℃, respectively, with the optimum metamorphic temperature of 24 ℃（ metamorphic rate of 60.45% ± 7.52% ）.
出处
《大连水产学院学报》
CSCD
北大核心
2009年第6期531-535,共5页
Journal of Dalian Fisheries University
基金
辽宁省自然科学基金资助项目(20062129)
关键词
内刺盘管虫
温度
生长发育
变态
Hydroides ezoensis
growth
development and metamorphism
temperature
