Table 3.

The fates of ingested DMSP in A. carterae during predation by mixotrophic K. veneficum, determined using dilution experiments.

DMSP/DMS/other compounds (nmol l−1 day−1)	Dilution Exp. 1	Dilution Exp. 2	Dilution Exp. 3	Dilution Exp. 4
Grazed DMSP	119.6 ± 9.1a	286.6 ± 16.1	732.6 ± 53.5	528.0 ± 28.0
Retained DMSP	39.5 ± 9.9	139.6 ± 32.7	322.4 ± 36.6	281.4 ± 82.4
	(33.0%)b	(48.7%)	(44.0%)	(53.3%)
Grazing-mediated DMS production	7.3 ± 1.5	32.2 ± 1.0	35.8 ± 3.4	29.0 ± 0.6
	(6.1%)c	(11.3%)	(4.9%)	(5.5%)
Net dissolved DMSP production	2.3 ± 0.5	7.2 ± 2.0	10.5 ± 2.2	6.3 ± 1.1
	(< 1.9%)d	(< 2.5%)	(< 1.4%)	(< 1.2%)
Other compoundse	∼70.5f	∼107.6	∼363.9	∼211.3
	(60.9%)	(37.5%)	(49.7%)	(40.0%)

^aOne standard deviation from replicate measurements.

^bPercentage of retained DMSP relative to the total DMSP grazed.

^cPercentage of grazing-mediated DMS production relative to the total DMSP grazed.

^dPercentage of net dissolved DMSP production relative to the total DMSP grazed.

^eIncludes assimilation into other biochemical compounds within the predator cell, and transformation into other compounds via bacterial demethylation or oxidation processes.

^fPercentage of other compounds (e.g. methionine, DMSO and SO₄²⁻) relative to the total DMSP grazed.