Table 1.

Sampling site details. Distance is along-shore distance from the southernmost site at Rye Playland, NY. N is the number of individuals for which data was collected at either mitochondrial or microsatellite loci.

					N (mitochondrial)			N (microsatellite)
sample location	sample ID	distance (km)	latitude (°)	longitude (°)	2000	2002	2007	2000	2002	2007
Rye Playland, NY	RP	0	41.00	−73.57	—	9	12	—	9	12
Nahant, MA	N	572	42.60	−70.65	—	21	19	—	21	19
Odiorne, NH	O	612	43.00	−70.73	—	—	17	—	—	17
Isle of Shoals, NH	IS	619	42.98	−70.60	—	19	20	—	19	20
Falmouth, ME	F	708	43.70	−70.22	—	18	16	—	18	16
Moosepoint, ME	MP	982	44.45	−69.92	15	—	—	15	—	—
Lubec, ME	L	1258	44.08	−66.98	5	—	7	5	—	8
Chance Harbor, NB	CH	1346	45.12	−66.98	4	20	—	4	20	—
Gulliver's Cove, NS	GC	1920	44.48	−66.08	8	20	19	8	20	20
Grosses Coques, NS	GrC	1936	44.35	−66.10	8	—	—	9	—	—
Cape Sable, NS	CS	2088	44.43	−66.58	12	19	15	12	19	15
Sandy Point, NS	SP	2135	43.68	−65.24	11	15	—	12	15	—
Broad Cove, NS	BC	2216	44.15	−64.48	7	21	—	7	21	—
Chester, NS	C	2286	44.53	−64.57	9	19	—	9	19	—
Halifax, NS	H	2370	44.62	−63.55	12	20	17	12	20	21
Murphy's Cove, NS	MC	2480	44.95	−62.07	9	20	17	9	21	20
Tor Bay, NS	TB	2531	45.18	−61.35	10	—	—	10	—	—
St Peter's, NS	StP	2644	45.65	−60.87	—	20	22	—	20	23
Louisborg, NS	LB	2705	45.92	−59.95	10	—	—	10	—	—