江西科学2011，Vol.29Issue(5)：593-596,677,5.
实验条件下原甲藻与中肋骨条藻种间相互作用研究
The Interactions between Prorocentrom micans and Skeletonema costatum in Laboratory Cultures
钟恢明 1张健 1刘力章1
作者信息
- 1. 江西省环境科学保护研究院,江西南昌330029
- 折叠
摘要
Abstract
Algal allelopathy is a manifold ecological/physiological phenomenon which plays a crucial role in explaining microalgae distribution,community structure and the dynamics of populations within an ecosystem.In this article,interactions between Prorocentrum micans and Skeletonema costatum,causative red tide dinoflagellates,were investigated using bi-algal cultures under stable environmental conditions（temperature,light and illuminating periodicity,etc.） and sufficient nutrition supply by f/2 enrichment.The results showed that the growth of P.micans was not significantly different when cultured with S.costatum both in 1×104 cells/mL cell densities（F=0.004 48,P=0.947 960.05）,whereas the growth of S.costatum was not inhibited when cultured with P.micans in 1×104 cells/mL inoculation density（F=5.116 63,P=0.047 210.05）.Culture filtrate of P.micans induced no inhibitory effect on the growth of S.costatum,and similarly when separated by a membrane filter,S.costatum grew well when cultured in filtrate of P.micans-S.costatum,which implies that the inhibitory effect of P.micans on S.costatum in the bi-algal cultures occurred mainly by direct cell contact.The growth of P.micans and S.costatum in bi-algal cultures was simulated using a mathematical model（Lotka-Volterra） to quantify the interaction.It is indicated that P.micans outcompeted S.costatum over time.The algal interactions between P.micans and S.costatum may play an important role during the process of red tides algal species singularity and succession.关键词
原甲藻/中肋骨条藻/种间相互作用/去藻滤液Key words
Prorocentrom micans/Skeletonema costatum/Species interactions/Cell-free filtrates分类
生物科学引用本文复制引用
钟恢明,张健,刘力章..实验条件下原甲藻与中肋骨条藻种间相互作用研究[J].江西科学,2011,29(5):593-596,677,5.
