I mpact of several harmful algal bloom(HAB) causing species, on life history characteristics of rotifer Brachionus plicatilis Müller  

作　　者：林佳宁 颜天 张清春 周名江 

机构地区：[1]Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China [2]University of Chinese Academy of Sciences, Beijing 100049, China [3]Laboratory of Riverine Ecological Conservation and Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

出　　处：《Chinese Journal of Oceanology and Limnology》2016年第4期642-653,共12页中国海洋湖沼学报（英文版）

基　　金：Supported by the Innovation Research Group Program of National Natural Science Foundation of China(No.41121064);the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDA01020304)

摘　　要：In recent years, harmful algal blooms(HABs) have occurred frequently along the coast of China, and have been exhibiting succession from diatom- to dinofl agellate-dominated blooms. To examine the eff ects of dif ferent diatom and dinofl agellate HABs, the life history parameters of rotifers(B rachionus plicatilis Müller) were measured after exposure to dif ferent concentrations of HAB species. The HAB species examined included a diatom(S keletonema costatum) and four dinofl agellates( Prorocentrum donghaiense, Alexandrium catenella, Prorocentrum lima and Karlodinium venefi cum). Compared with the control treatment(CT), the diatom S. costatum showed no adverse impacts on rotifers. Exposure to dinofl agellates at densities equivalent to those measured in the fi eld resulted in a reduction in all the life history parameters measured. This included a reduction in: lifetime egg production(CT: 20.34 eggs/ind.) reduced to 10.11, 3.22, 4.17, 7.16 eggs/ind., life span(CT: 394.53 h) reduced to 261.11, 162.90, 203.67, 196 h, net reproductive rate(CT: 19.51/ind.) reduced to 3.01, 1.26, 3.53, 5.96/ind., fi nite rate of increase(CT: 1.47/d) reduced to 1.16, 1.03, 1.33, 1.38/d, and intrinsic rate of population increase(CT: 0.39/d) reduced to 0.15, 0.03, 0.28, 0.32/d, for the dinofl agellates P. donghaiense, A. catenella, P. lima and K. venefi cum, respectively. The results showed that the diatom S. costatum had no detrimental consequences on the reproduction and growth of B. plicatilis, however, the four dinofl agellates tested did show adverse ef fects. This suggests that dinofl agellate HABs may suppress microzooplankton, resulting in an increase in algal numbers.In recent years, harmful algal blooms（HABs） have occurred frequently along the coast of China, and have been exhibiting succession from diatom- to dinofl agellate-dominated blooms. To examine the eff ects of dif ferent diatom and dinofl agellate HABs, the life history parameters of rotifers（B rachionus plicatilis Müller） were measured after exposure to dif ferent concentrations of HAB species. The HAB species examined included a diatom（S keletonema costatum） and four dinofl agellates（ Prorocentrum donghaiense, Alexandrium catenella, Prorocentrum lima and Karlodinium venefi cum）. Compared with the control treatment（CT）, the diatom S. costatum showed no adverse impacts on rotifers. Exposure to dinofl agellates at densities equivalent to those measured in the fi eld resulted in a reduction in all the life history parameters measured. This included a reduction in： lifetime egg production（CT： 20.34 eggs/ind.） reduced to 10.11, 3.22, 4.17, 7.16 eggs/ind., life span（CT： 394.53 h） reduced to 261.11, 162.90, 203.67, 196 h, net reproductive rate（CT： 19.51/ind.） reduced to 3.01, 1.26, 3.53, 5.96/ind., fi nite rate of increase（CT： 1.47/d） reduced to 1.16, 1.03, 1.33, 1.38/d, and intrinsic rate of population increase（CT： 0.39/d） reduced to 0.15, 0.03, 0.28, 0.32/d, for the dinofl agellates P. donghaiense, A. catenella, P. lima and K. venefi cum, respectively. The results showed that the diatom S. costatum had no detrimental consequences on the reproduction and growth of B. plicatilis, however, the four dinofl agellates tested did show adverse ef fects. This suggests that dinofl agellate HABs may suppress microzooplankton, resulting in an increase in algal numbers.

关 键 词：harmful algal bloom（HAB） DINOFLAGELLATES Brachionus plicatilis REPRODUCTION population dynamics 

分 类 号：X55[环境科学与工程—环境工程]