Population dynamics, growth and energetics of jellyfish Aurelia aurita in a shallow fjord
Population dynamics, growth and energetics of jellyfish Aurelia aurita in a shallow fjord
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浅峡湾 Aurelia aurita 水母的种群动态、生长和能量学
DOI：
10.3354/meps105009
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发表时间：
1994
影响因子：
2.5
通讯作者：
H. Riisgård
中科院分区：
文献类型：
--
作者：
N. Olesen;K. Frandsen;H. Riisgård
1991 年和 1992 年对水母 Aurelia aunta 的季节性丰度和生长进行了研究。在丹麦 Kertinge Nor 的一个小浅峡湾的内部，这两年都观察到水母水母的大量出现，并在 Apnl 1992 年测量到最大值约 300 ind m-3。峡湾中生长较差，水母的最大平均伞形直径为仅 54 i 12 mm 和 37 + 15 mm 分别于 1991 年和 1992 年 在实验室中测量了不同猎物浓度下的生长、清除、摄取和反应，并建立了能量收支 提供了浓度范围为 7 至 13000 ind 的轮虫（Brachjonus plicatllls）的 Ephyrae（直径 4 mm） I' Ephyrae 的清除减少 随着猎物浓度的增加，猎物浓度与摄取之间呈曲线关系，增加30％至50％。在实验室中，在400 B plicatilis 1'（相当于60 pg C 1'）下测量了0 2 d'的最大特异性生长速率。在 Kertinge Nor，生长率从未超过 0 1 天“Kertinge Nor 的平均浮游动物浓度仅为 5 p g C I”，因此可以是 得出的结论是，阿姨在峡湾里的食物受到限制
Seasonal abundance and growth of the scyphomedusa Aurelia aunta were studied during 1991 and 1992 In the Inner part of a small shallow fiord, Kertinge Nor, Denmark Uunng both years, mass occurrence of A aunta was observed, and a maximum value of ca 300 ind m-3 was measured In Apnl 1992 Growth was poor in the fiord and the maximum mean umblella diameter of medusae was only 54 i 12 mm and 37 + 15 mm In 1991 and 1992 respectively Growth, clearance, lngestlon and resplratlon were measured at different prey concentrations in the laboratory, and an energy budget was estabhshed Ephyrae (4 mm in diameter] were offered rotiferas (Brachjonus plicatllls) in concentrations ranging from 7 to 13000 ind I ' Clearance of ephyrae decreased 30 to 50% with increasing prey concentration, and a curved relationship between prey concentration and lngestlon was found A maximum speclflc growth rate of 0 2 d ' was measured In the laboratory at 400 B plicatilis 1 ', correspondlng to 60 pg C 1.' In Kertinge Nor, the growth rate never exceeded 0 1 d ' The average zooplankton concentration In Kertinge Nor was only 5 p g C I ' and it could therefore be concluded that A aunta was food hmited in the fiord