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李少菁, 林汝榕**
海洋与湖沼,1991,22(3):242~248,-0001,():
-1年11月30日
在室内进行了铜、镉对中华哲水蚤(Calanus sinicus Brodsky)氨基酸含量影响实验。结果表明,当外加重金属浓度较低时(Cu, 2-10μg/L; Cd, 10-150μg/L),动物各种氨基酸含量明显提高,总氨基酸含量比对照组约增加10-31%;重金属浓度提高时,动物氨基酸含量则出现下降趋势,说明较低浓度重金属对动物有刺激效应,此摄食活动加强,增加了从摄食获得的营养成分;浓度提高则产生抑制效应。因此,氨基酸含量的变化,可作桡足类对外界重金属污染物作出生理反应的指标之一。文中对某些特殊氨基酸含量的变及机制也进行了讨论。
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【期刊论文】Chemical induction of settlement and metamorphosis in two Babylonia (Gastropoda) larvae
李少菁, Ke Caihuan, Li Shaojing, Li Fuxue, Zheng Zhong, Liu Weibin
Acta Oceanologica Sinica, Vol. 19, No.1, pp. 59~67, 2000.,-0001,():
-1年11月30日
By exposure to 12×10-3mol/dm3K+ for 24h, more than 90% of planktonic larvae of Babylonia formosae and B. areolata were effectively induced to metamorphose completely. 15×10-3mol/dm3K+exerted toxic effect on larval B. areolata over a 24-h period, but produced better results of induction by 12h exposure. Metamorphosed juveniles induced by increased by K+could move and feed normally. Percent metamorphosis increased with average shell height for K+-induced larvae. L-DOPA, epinephrine and norepinephrine ranging from 5.5×10-6 to 5.5×10-5mol/dm3 had no inductive activity to metamorphosis in larval B. areolata, whereas the rate of metamorphosis induced by dopamine at a concentration of 10-4mol/dm3 was approximately half less than that by 12×10-3mol/dm3K+. TEA (a K+-channel blocker) did not inhibit metamorphosis in the two Babylonia larvae by induction of K+. Based on the results of K+-induced experiments, it is preliminarily suggested that shell height of larvae achieving metamorphic competence was in the range of 860.2~1009.8μm for B. fbrmosae, and 849.6~956.0μm for B. areolata. In addition, planktonic larvae of the two Babylonia had delayed metamorphosis.
Chemical induction,, metamorphosis,, Babylonia formosae,, B., areolata,, larva
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李少菁, 李少莆, 陈峰, 王桂忠
厦门大学学报(自然科学版),1994,33:129~134,-0001,():
-1年11月30日
中华假磷虾体干重与体长呈正指数相关:DW=3.09(BL)2.46,但室内养成的成体比海捕的相同体长的体重更大。BL=2.06+5.66AL。蜕皮间期与温呈现性负相关:IP=14.52+0.51T。自P2开始培养的假磷虾可蜕皮27~34次,海捕的抱卵雌虾,卵孵化后仍可蜕皮,即同时存在生殖生长与体质生长。瞬时生长率随了育而快速下降。蜕皮重占蜕皮前动物重的3.26%。这在生物能学估算中具有重要意义。
中华假磷虾,, 生长率,, 蜕皮间期
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李少菁, 郭东晖, 陈峰, 林元烧, 陈钢
台湾海峡,2003,22(4):415~421,-0001,():
-1年11月30日
本文在分析厦门港中华哲水蚤元素组成基础上,研究其各项生理速率并估算碳氮收支。结果表明:摄食率与饵料含量呈线性相关,未发现饱和摄食。同化效率介于92%~96%之间。与饵料含量及摄食率无关,呼吸率与摄食率及同化率均呈线性相关,其SDA系数介于摄入碳量的9.3%(m/m)或同化碳量的9.9%(m/m)。总氮排泄率随摄食率与同化率的提高而呈线性增加,随着摄食率的提高,分配给卵生产的能量也增多,二者呈线性相关。饵料中N含量是厦门港中华哲水蚤生长的主要限制因子,当其对N的摄食率低于10.5×10-3(m/m)/d时,动物“负”生长。
海洋生物, 碳氮收支, 实验研究, 中华哲水蚤, 生理速率, 福建
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