Table 1.

Proportion of Culex (Cx) pipiens (P), quinquefasciatus (Q), and restuans (R) surviving immature stages of development at various temperatures

Group	CxP	P (pop)a	CxQ	P (pop)a	CxR	P (species)b
16°C
Field	0.92	0.0592	0.96	<0.0001	0.83	<0.0001
Colony	0.87		0.81		—	0.012
20°C
Field	0.87	0.0007	0.84	0.0358	0.82	0.2460
Colony	0.77		0.89		—	<0.0001
24°C
Field	0.87	<0.0001	0.86	<0.0001	0.81	0.0434
Colony	0.61		0.70		—	0.0090
28°C
Field	0.82	0.7730	0.95	<0.0001	0.61	<0.0001
Colony	0.83		0.53		—	<0.0001
32°C
Field	0.83	<0.0001	0.77	<0.0001	0.34	<0.0001
Colony	0.46		0.38		—	0.0181
P (temp)c	<0.0001		<0.0001		<0.0001

^aχ² test tests measuring the effect of temperature on immature survival among field or colony populations of the same species.

^bχ² test tests measuring the effect of species on immature survival for individual populations and temperatures.

^cχ² test tests comparing immature survival of field and colony populations of individual species and temperatures.