Table 2.

Mean δ¹³C and δ¹⁵N values (‰) of marine ciliates (Pseudokeronopsis pararubra, Protocruzia labiata, Strombidium sulcatum, and Uronemella filificum) fed with Chaetoceros calcitrans and Isochrysis galbana during the duration of the entire experiment.

Time (h)		Pseudokeronopsis pararubra					Protocruzia labiata					Strombidium sulcatum					Uronemella filificum
		δ13C		δ15N			δ13C		δ15N			δ13C		δ15N			δ13C		δ15N
Chaetoceros calcitrans
	n	Mean	SD	Mean	SD	n	Mean	SD	Mean	SD	n	Mean	SD	Mean	SD	n	Mean	SD	Mean	SD
0	4	−26.3a	0.2	6.3a	0.2	4	−26.2a	0.2	6.1a	0.2	4	25.6a	0.2	6.7a	0.1	4	−25.5a	0.2	6.5a	0.2
1	5	−22.5b	0.3	7.0b	0.3	5	−23.7b	0.3	6.8b	0.3	5	−23.7b	0.2	7.2b	0.2	5	−24.0b	0.2	7.1b	0.2
4	5	−22.7b	0.2	7.6b	0.4	5	−23.6b	0.2	7.6c	0.3	5	−24.0b	0.2	8.0c	0.3	5	−23.3c	0.3	7.8c	0.3
8	5	−18.6c	0.6	8.7c	0.4	5	−19.4c	0.2	10.6d	0.2	5	−19.3c	0.2	7.9c	0.4	5	−22.9d	0.2	8.7d	0.3
12	5	−16.4d	0.4	11.2e	0.1	5	−15.6d	0.2	11.7f	0.2	5	−15.0d	0.2	8.5d	0.2	5	−16.6e	0.2	8.6d	0.2
24	5	−14.7e	0.2	11.0e	0.2	5	−14.9e	0.2	11.4ef	0.8	5	−14.6d	0.4	9.7e	0.2	5	−15.1f	0.3	8.9e	0.3
48	3	−14.0f	0.2	10.7d	0.1	3	−14.0f	0.3	11.2e	0.2	3	−14.0e	0.2	11.7f	0.2	3	−13.9g	0.1	10.3f	0.3
96	3	−13.8f	0.1	10.6d	0.2	3	−13.5g	0.2	11.0e	0.2	3	−13.9e	0.3	11.7f	0.2	3	−13.9g	0.1	11.3g	0.1
192	3	−13.8f	0.1	10.6d	0.2	3	−13.5g	0.2	11.0e	0.1	3	−14.0e	0.1	11.7f	0.2	3	−13.9g	0.1	11.3g	0.2
Isochrysis galbana
0	4	−26.2a	0.2	6.4d	0.2	4	−26.2a	0.2	6.0c	0.1	4	−25.5a	0.1	6.8e	0.1	4	−25.4a	0.2	6.6e	0.2
1	5	−25.8b	0.2	4.8a	0.2	5	−23.2b	0.2	5.1a	0.2	5	−23.0b	0.3	5.0a	0.2	5	−23.5b	0.2	5.4a	0.2
4	5	−25.7b	0.2	4.8a	0.3	5	−23.2b	0.2	5.3ab	0.2	5	−23.1b	0.3	5.7b	0.2	5	−23.4b	0.2	5.6a	0.2
8	5	−23.8c	0.2	5.0ab	0.2	5	−22.9b	0.3	5.5 b	0.2	5	−22.8b	0.3	6.0bc	0.2	5	−22.6c	0.2	5.6ab	0.5
12	5	−20.7d	0.4	5.0ab	0.1	5	−22.3c	0.2	5.4b	0.3	5	−20.7c	0.2	6.0bc	0.2	5	−22.3c	0.2	5.9b	0.2
24	5	−16.7e	0.4	5.3bc	0.2	5	−19.8d	0.6	5.8c	0.2	5	−20.8c	0.2	6.1bc	0.2	5	−16.5d	0.3	6.0b	0.3
48	3	−15.5f	0.3	5.5c	0.2	3	−14.8e	0.2	5.9c	0.2	3	−15.1d	0.3	6.2c	0.2	3	−15.4e	0.1	6.2c	0.2
96	3	−15.0g	0.1	5.5c	0.2	3	−14.7e	0.2	5.9c	0.2	3	−15.2d	0.2	6.3c	0.2	3	−15.3e	0.1	6.3c	0.2
192	3	−15.0g	0.2	5.5c	0.2	3	−14.7e	0.2	6.0c	0.2	3	−15.1d	0.2	6.4cd	0.1	3	−15.3e	0.2	6.3cd	0.1

Data represent means±1 SD. Means followed by the same superscript letter in each row are not significantly different (p<0.01, Tukey’s post-hoc test).