Control of Toxic Marine Dinoflagellate Blooms by Serial Parasitic Killers

被引:244
作者
Chambouvet, Aurelie [1 ,2 ]
Morin, Pascal [1 ,2 ]
Marie, Dominique [1 ,2 ]
Guillou, Laure [1 ,2 ]
机构
[1] CNRS, Biol Stn, UMR 7144, F-29682 Roscoff, France
[2] Univ Paris 06, Lab Adapt & Divers Milieu Marin, Paris, France
关键词
D O I
10.1126/science.1164387
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 marine dinoflagellates commonly responsible for toxic red tides are parasitized by other dinoflagellate species. Using culture- independent environmental ribosomal RNA sequences and fluorescence markers, we identified host- specific infections among several species. Each parasitoid produces 60 to 400 offspring, leading to extraordinarily rapid control of the host's population. During 3 consecutive years of observation in a natural estuary, all dinoflagellates observed were chronically infected, and a given host species was infected by a single genetically distinct parasite year after year. Our observations in natural ecosystems suggest that although bloom- forming dinoflagellates may escape control by grazing organisms, they eventually succumb to parasite attack.
引用
收藏
页码:1254 / 1257
页数:4
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