Table 3.

Origin and cellular dimensions of Mesodinium rubrum variant isolates.

Variant	Strain	Origin/year		Length (μm)	Width (μm)	L/W	Volumea (μm3)	Cryptophyte prey	Type referenceh
A	NCMA 2563	McMurdo Sound, AN 1996	Mean Range	23.1 (2.6) 17.3–30.2	22.4 (2.7) 15.1–32.5	1.1 (0.1) 0.9–1.2	5707 (1826) 2139–10,277	GCf	1
B	MR-MAL01	Gomso Bay, KR 2001	Mean Range	21b	13	1.6	1857c	TAg	2
B	MR-INO200702	Inokushi Bay, JP 2007	Mean Range	25.8 (3.8) 16.8–32.1	21.8 (3.8) 13.1–28.6	1.2 (0.1) 0.9–1.6	6719 (3008) 1508–13,007	TA	3
F	AND-A0711	Huelva, ES 2007	Mean Range	16.2 (1.7) 12.6–19.4	13.0 (1.0) 10.1–15.5	1.3 (0.1) 1.1–1.5	1374 (308) 672–1939	TA	4
F	Mr-DK2007	Frederikssund, DK 2007	Mean Range	31d 25–35	21 16–25	1.5	7154e 3349–11,448	TA	5
G	CBJR05	James River, US 2011	Mean Range	21.7 (3.0) 15.8–33.7	16.0 (1.7) 11–21.7	1.4 (0.2) 1.1–2.0	2937 (914) 1234–5537	TA	Here

All measurements made here unless otherwise noted. Mean values presented with standard deviation in parentheses.

^aVolumes calculated as spheroids using where a is the equatorial radius and c is the polar radius; ^bestimated from Yih et al. (2004); ^cre-calculated here and different from reported value (5996 ± 30) in Yih et al. (2004); ^dfrom Garcia-Cuetos et al. (2012); ^ecalculated here; ^fGC: Geminigera cryophila; ^gTA: Teleaulax amphioxeia; ^htype references: (1) Gustafson et al. (2000), (2) Yih et al. (2004), (3) Nishitani et al. (2008), (4) Jaén (unpublished), Riobó et al. (2013), (5) Garcia-Cuetos et al. (2012).