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cje ›› 2011, Vol. 30 ›› Issue (09): 2019-2025.

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Feeding of rotifer Brachionus plicatilis enriched with microalgae.

LI Lei1,2, ZHU Xiao-ming3**, WU Hong-xi1,2   

  1. 1Zhejiang Mariculture Research Institute, Wenzhou 325005, Zhejiang, China; 2Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-resource, Wenzhou 325005, Zhejiang, China; 3College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, Fujian, China
  • Online:2011-09-08 Published:2011-09-08

Abstract: By the methods of experimental ecology, this paper studied the dynamic changes of the filtration and ingestion rates of Brachionus plicatilis enriched with single and mixed microalgal diets at optimum concentrations. The microalgal concentration, microalgal species, and culture duration all had significant effects on the filtration and ingestion rates of B. plicatilis. The filtration and ingestion rates of  B. plicatilis to the diets decreased with increasing culture duration. Under the experimental conditions, the filtration rate of B. plicatilis to the microalgae within 6 hours was in the order of Chlorella sp. > Isochrysis galbana > Chaetoceros muelleri, while that within the whole experimental duration (12 hours) was Isochrysis galbana > Chlorella sp. > Chaetoceros muelleri. The predation of B. plicatilis fed by mixed microalgal diet was with a preferential order of Isochrysis galbana > Chlorella sp. > Chaetoceros muelleri.

Key words: Harmonia axyridis, Insecticides, Sublethal effect, Fecundity, Ecotoxicology