Table 1.

Observed and expected genotypic frequencies at the phosphoglucose isomerase locus for Chrysomela aeneicollis individuals collected in three high elevation drainages in the summer of 1998

Locality	Elevation, meters	n	1-1, obs/exp	1-2, obs/exp	1-3, obs/exp	1-4, obs/exp	1-5, obs/exp	2-4, obs/exp	4-5, obs/exp	4-4, obs/exp
Big Pine Creek
Falls Site	2,961	20	0.10/0.07	____/____	____/____	0.35/0.41	____/____	____/____	____/____	0.55/0.52
Upper Site	3,229	20	0.05/0.06	____/____	____/____	0.40/0.37	____/0.01	____/____	0.05/0.04	0.50/0.52
Sixth Lake	3,332	20	0.10/0.02	____/____	____/____	0.10/0.25	____/____	____/0.01	0.05/0.04	0.75/0.68
Bishop Creek
South Lake	2,996	20	0.30/0.35	____/____	0.05/0.03	0.55/0.46	____/____	____/____	____/____	0.10/0.13
HSC Site	3,196	20	0.35/0.38	____/____	____/____	0.50/0.45	0.05/0.03	____/____	____/0.02	0.10/0.12
Brown Lake	3,251	19	0.47/0.43	____/____	____/____	0.32/0.43	0.05/0.04	____/____	____/0.02	0.16/0.09
Rock Creek
East Fork	2,705	50	0.90/0.88	0.02/0.02	____/____	0.06/0.08	____/0.02	____/____	0.02/____	____/____
Heart Lake	3,179	52	0.85/0.83	0.10/0.09	____/____	0.04/0.07	____/____	____/____	____/____	0.02/____
Ruby Lake	3,317	51	0.82/0.81	0.06/0.07	____/____	0.10/0.11	____/____	0.02/0.00	____/____	____/____

Expected frequencies calculated for each population under the assumption of Hardy-Weinberg equilibrium. obs, observed; exp, expected.