Nutritional status and diet composition affect the value of diatoms as copepod prey

被引：161
作者：
Jones, RH [1 ]
Flynn, KJ [1 ]
机构：
[1] Univ Coll Swansea, Inst Environm Sustainabil, Swansea SA2 8PP, W Glam, Wales
来源：
SCIENCE | 2005年 / 307卷 / 5714期
关键词：
D O I：
10.1126/science.1107767
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The role of diatoms as key food for copepods at the base of pelagic food chains has been questioned recently on the grounds of toxicity. We show, using unialgal versus mixed algal diets of different nutritional status (i.e., nitrogen:carbon ratio) fed to Acartia tonsa, that diatoms per se are not toxic but that single-diatom diets are inadequate. Additionally, the nutritional state of the phytoplankton has a profound effect on copepod growth and growth efficiency. The ecological significance of laboratory demonstrations of diatom toxicity needs to be reconsidered.
引用
收藏
页码：1457 / 1459
页数：3
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