标题：Enhanced growth and esterase activity of Chlorella pyrenoidosa (Chlorophyta) in response to short-term direct grazing and grazing-associated infochemicals from Daphnia carinata
摘要：To determine how Chlorella pyrenoidosa responds to short-term grazing and grazing-associated infochemicals from Daphnia carinata, we measured the growth, esterase activity, chlorophyll fluorescence, and cell size of the alga. Cell densities of C. pyrenoidosa exposed to D. carinata water and short-term D. carinata grazing were significantly higher than those in the control; theoretic maximum cell densities of C. pyrenoidosa in the two treatments were also higher than those in the control, which indicated that grazing-associated infochemicals by D. carinata may enhance the alga's growth. Esterase activities in the two treatments were significantly higher than those in the control, which may contribute to the rapid growth of C. pyrenoidosa exposed to D. carinata infochemicals. Chlorophyll fluorescence and cell size were not significantly influenced by D. carinata infochemicals and grazing.
