Table 1.

Gas exchange and water loss parameters in E. propertius larvae using both or either mode of gas exchange. Mean ± s.e.m. presented.

			mixture of patterns
	CGE	DGCs	CGE	DGCs
N	15	18	6
fresh mass (mg)	252.9 ± 19.2	230.5 ± 10.1	273.64 ± 22.3
CO2 (µl h−1)	6.84 ± 1.48	3.67 ± 0.36	6.40 ± 1.24	4.81 ± 1.42
H2O (µl h−1)	0.216 ± 0.048	0.121 ± 0.022a	0.184 ± 0.049	0.116 ± 0.026b
H2O (moles) : CO2 (moles)	0.105 ± 0.071	0.037 ± 0.007a	0.030 ± 0.005	0.028 ± 0.005
RWL (µl h−1)	0.0209 ± 0.0076	0.0048 ± 0.0013a	0.0233 ± 0.0101	0.0134 ± 0.0070b
cuticular water loss (µl h−1)	0.1951 ± 0.0492	0.1170 ± 0.0217	0.1698 ± 0.0471	0.1030 ± 0.0224
RWL as percentage total water loss (%)	12.8 ± 4.9	4.4 ± 2.0a	13.2 ± 1.4	9.9 ± 3.9b
hygric cost of gas exchange (slope of H2O on CO2)	2.015 × 10−3 ± 6.14 × 10−4	4.140 × 10−4 ± 6.50 × 10−5a	2.416 × 10−3 ± 1.50 × 10−3	8.678 × 10−4 ± 2.93 × 10−4

^aSignificant difference (p < 0.05) between individuals using either DGCs or CGE.

^bSignificant difference (p < 0.05) between modes of gas exchange within individuals that use both modes.