The Company of Biologists

Table 2.

Measurements of Cloeon sp. exposed to a range of salinities in wet lab water

	Electrical conductivity (mS cm^-1)
Measurement	0.62	1.0	2.5	5.0	10	15	ANOVA
Percentage survival	33.3	62.5	55.6	33.3	0	0
Percent emerged	11.1	33.3	0	0	0	0
Number of days alive	15.8±1.86^a	16.7±2.27^a	15.9±2.41^a	17.4±1.6^a	10.9±1.8^a,b	6.8±1.1^b	F=4.944, d.f.=5,48, P=0.010
Number of moults	1.3±0.24^a	0.9±0.26^a	0.9±0.35^a	1.1±0.35^a	1.1±0.20^a	0.6±0.18^a	F=0.968, d.f.=5,48, P=0.447
Initial size
Body length (mm)	4.83±0.23^a	5.64±0.14^a	5.02±0.25^a	5.16±0.26^a	5.39±0.15^a	5.71±0.30^a	F=2.329, d.f.=5,48, P=0.057
Eye width (mm)	0.83±0.04^a,b	0.99±0.03^a	0.86±0.06^a,b	0.89±0.05^a,b	0.84±0.02^a,b	0.81±0.04^b	F=2.501, d.f.=5,48, P=0.043
Final size
Body length (mm)	6.04±0.17^a	6.11±0.39^a	5.50±0.32^a	5.96±0.39^a	—	—	F=0.824, d.f.=3,15, P=0.501
Eye width (mm)	1.05±0.02^a	0.91±0.04^a	0.91±0.07^a	0.98±0.05^a	—	—	F=1.546, d.f.=3,15, P=0.244
Growth rates
Body (mm/day)	0.041±0.06^a	0.031±0.012^a	0.036±0.010^a	0.051±0.017^a	—	—	F=0.411, d.f.=3,12, P=0.748
Eyes (mm/day)	0.009±0.001^a	0.000±0.005^a	0.004±0.003^a	0.005±0.005^a	—	—	F=0.685, d.f.=3,12, P=0.578
Moulting (moults/day)	0.09±0.02^a	0.04±0.01^a	0.04±0.02^a	0.07±0.02^a	0.10±0.02^a	0.18±0.11^a	F=1.130, d.f.=5,48, P=0.357

	Electrical conductivity (mS cm^-1)
Measurement	0.62	1.0	2.5	5.0	10	15	ANOVA
Percentage survival	33.3	62.5	55.6	33.3	0	0
Percent emerged	11.1	33.3	0	0	0	0
Number of days alive	15.8±1.86^a	16.7±2.27^a	15.9±2.41^a	17.4±1.6^a	10.9±1.8^a,b	6.8±1.1^b	F=4.944, d.f.=5,48, P=0.010
Number of moults	1.3±0.24^a	0.9±0.26^a	0.9±0.35^a	1.1±0.35^a	1.1±0.20^a	0.6±0.18^a	F=0.968, d.f.=5,48, P=0.447
Initial size
Body length (mm)	4.83±0.23^a	5.64±0.14^a	5.02±0.25^a	5.16±0.26^a	5.39±0.15^a	5.71±0.30^a	F=2.329, d.f.=5,48, P=0.057
Eye width (mm)	0.83±0.04^a,b	0.99±0.03^a	0.86±0.06^a,b	0.89±0.05^a,b	0.84±0.02^a,b	0.81±0.04^b	F=2.501, d.f.=5,48, P=0.043
Final size
Body length (mm)	6.04±0.17^a	6.11±0.39^a	5.50±0.32^a	5.96±0.39^a	—	—	F=0.824, d.f.=3,15, P=0.501
Eye width (mm)	1.05±0.02^a	0.91±0.04^a	0.91±0.07^a	0.98±0.05^a	—	—	F=1.546, d.f.=3,15, P=0.244
Growth rates
Body (mm/day)	0.041±0.06^a	0.031±0.012^a	0.036±0.010^a	0.051±0.017^a	—	—	F=0.411, d.f.=3,12, P=0.748
Eyes (mm/day)	0.009±0.001^a	0.000±0.005^a	0.004±0.003^a	0.005±0.005^a	—	—	F=0.685, d.f.=3,12, P=0.578
Moulting (moults/day)	0.09±0.02^a	0.04±0.01^a	0.04±0.02^a	0.07±0.02^a	0.10±0.02^a	0.18±0.11^a	F=1.130, d.f.=5,48, P=0.357

Values are means ± s.e.m.; N=9.

Different letters indicate statistically significant differences(P=0.05) between treatments.