Table 2. Sampling and grazing beating statistics.

	no prey	S. major	Karenia brevis				Karlodinium veneficum
			SP-1 (non-toxic)	2228 (toxic)	2228+S.major		1609 (non-toxic)	2064 (toxic)	2064+1609
					1∶3	3∶1			1∶3	3∶1
Cell concentration(cell/ml)	N/A	2039	1855	3373	2728	1844	1776	2414	2004	1723
Sampling beating fraction★	0.022	0.039	0.052	0.053	0.036	0.024	0.059	0.069	0.049	0.049
Grazing beating fraction★	0.000	0.281	0.209	0.082	0.042	0.010	0.118	0.073	0.174	0.109
Corr. sampling fraction♦	N/A	0.036	0.044	0.081	0.045	0.021	0.048	0.076	0.044	0.038
Corr. grazing fraction♦	N/A	0.302	0.248	0.053	0.034	0.011	0.146	0.066	0.190	0.139
(ms)•	54×/1.88	75×/2.19	61×/1.95	65×/1.75	69×/1.98	52×/1.80	56×/2.07	61×/1.78	71×/1.94	69×/2.22
(ms)•	N/A	347×/1.66	235×/1.88	258×/1.51	342×/1.54	169×/4.97	275×/1.91	264×/1.48	254×/1.64	245×/1.51
rms fitting error – grazing◊	N/A	0.04	0.06	0.07	0.18	0.90	0.08	0.08	0.04	0.07

^★The total duration of sampling/grazing divided by the observation time.

^♦Values corrected for differences in prey cell concentration.

^•For a normally-distributed variable, a domain consisting of ± standard deviation from the arithmetic mean contains 68.3% of the data. For a log-normally-distributed variable, 68.3% of the results fall within the range of the geometric mean ×/(multiply/divide) by the geometric standard deviation. Accordingly, represents a confidence interval of 68.3% [38].

^◊errors resulting from log-normal fits.