Growth of Oyster (Crassostrea virginica) Larvae in Small-Scale Systems Using an Algae Concentrate Food Source

Table 3

Water parameters measured in controls and microcosms throughout the 14-day trials.

	Temperature (°C)		Salinity (ppt)		Dissolved oxygen (mg L^−1)
	AM	PM	AM	PM	AM	PM
Trial 1
Control	27.2 ± 1.00^a	28.0 ± 0.78	21.0 ± 1.82^a	20.8 ± 1.84	—	—
2-inch airlift	26.6 ± 1.26^b	28.2 ± 1.05	21.0 ± 1.87^a	20.8 ± 1.86	—	—
4-inch airlift	26.6 ± 1.26^b	28.2 ± 1.04	21.0 ± 1.87^a	20.8 ± 1.85	—	—
1 mL air injector	26.6 ± 1.27^b	28.1 ± 1.06	20.9 ± 1.90^a	20.8 ± 1.88	—	—
p Value	<0.001	0.554		0.470	—	—
Trial 2
Control	26.9 ± 0.96^a	28.0 ± 0.99	19.4 ± 1.67	19.1 ± 1.67	5.78 ± 0.71^b	6.20 ± 0.29^b
1 mL air injector	25.6 ± 1.40^b	28.9 ± 1.49	19.3 ± 2.06	19.1 ± 1.93	7.21 ± 0.41^a	6.63 ± 0.23^a
5 mL air injector	25.6 ± 1.38^b	29.0 ± 1.40	19.3 ± 2.07	19.1 ± 1.93	7.18 ± 0.38^a	6.64 ± 0.21^a
Zero aeration	25.8 ± 1.39^b	29.1 ± 1.44	19.3 ± 2.07	19.1 ± 1.93	5.50 ± 1.00^c	6.02 ± 0.59^c
p Value	<0.001	0.058	0.860	0.957	<0.001	<0.001

Dissolved oxygen was only measured during trial 2. Bold p Values indicate significant differences among treatments (), with pairwise comparison results denoted using superscripts. Pairwise comparisons did not detect significant differences among treatments ().