桡足类与硅藻相互作用的研究进展

摘要/Abstract

摘要： 硅藻对桡足类繁殖的影响是近年来海洋生态学的热点问题,主要体现在降低了桡足类的产卵和孵化成功率。其可能原因在于硅藻大量繁殖后由于缺乏某种关键营养物质或自身产生某种抑制物阻碍了桡足类繁殖过程。但目前现场、室内实验结果不一:室内实验结果显示硅藻对桡足类繁殖的抑制作用主要是因为缺乏必要的多不饱和酸(PUFAs)。而现场实验结果则表明硅藻可产生次级代谢产物(小分子量的醛类)阻碍桡足类卵的孵化。由于目前对这种硅藻-桡足类相互作用机制和影响程度尚不清楚,如果这一现象在自然海区中普遍存在,传统上关于“硅藻-桡足类-鱼类”的海洋经典食物链观点势必存在极大的缺陷。文章介绍了这一问题的目前研究进展和将来的研究前景。

关键词: 香蕉, 高CO₂浓度, 光合速率, 叶N分配

Abstract: One of the focal spot of marine ecology is the effects of diatom on copepod reproduction,which decreases copepod egg fecundity and hatching success.Two hypotheses had been suggested to explain the deleterious effects,nutritionally deficient and/or possible toxic agents.It still can not find agreements between the laboratory and in situ works.The results from laboratory indicated that the inhibitory effect caused by diatom could be due to deficiency of some polyunsaturated acids (PUFAs).However,the results from in situ works suggested that the inhibition on copepod hatching may be ascribed to some secondary products (low molecular weight aldehydes) produced by diatom.Up to now,it was still unclear that its work mechanism and the influence under natural environmental conditions.However,if such phenomenon occurs widely in the marine ecosystems,the current understanding of the classic marine food chain,diatom-copepod-fish,may be seriously limited.This article introduced the recent researches on diatom-copepod interaction,with some aspects requiring more study in the future put forward.

Key words: Musa paradisiaca, Higher CO₂ concentration, Photosynthetic rate, Leaf nitrogen partition

中图分类号:

Q178.53

李捷, 李超伦, 张展, 陶振铖. 桡足类与硅藻相互作用的研究进展[J]. 生态学杂志, 2005, (9): 1085-1089.

LI Jie, LI Chaolun, ZHANG Zhan, TAO Zhencheng. Research progress on diatom-copepod interaction[J]. cje, 2005, (9): 1085-1089.

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