Table 3 Sampling locations and sample sizes. Locations of sampled rookeries, geographical coordinates and number of samples for the analysis of mitochondrial and nuclear DNA.

Zalophus wollebaeki (Galápagos Islands)

Santa Fé (Tourist beach)

0°48'18''S, 90°02'25''W

2 (CR: AM422165/AM422166, cytb: AM422143/AM422144)

39

Española (Punta Cevallos & Gardener Bay)

1°22'07''S, 89°38'32''W

28

Floreana (Isla Champion)

1°14'16''S, 90°23'16''W

1 (CR: AM422174, cytb: AM422152)

29

Isabela (Villamil)

0°57'58''S, 90°57'42''W

30

Fernandina (Cabo Hammond)

0°28'18''S, 91°36'25''W

2 (CR: AM422171/AM422172, cytb: AM422149/AM422150)

23

Isabela (Punta Bravo) &Fernandina (Punta Espinosa)

0°09'44''S, 91°25'25''W

1 (CR: AM422169, cytb: AM422147)

27

Pinta (Cabo Chalmers)

0°32'10''N, 90°44'20''W

1 (CR: AM422168, cytb: AM422146)

30

Genovesa (Southwest Point)

0°18'16''N, 89°57'16''W

2 (CR: AM422167/AM422173, cytb: AM422145/AM422151)

14

Mosquera

0°24'58''S, 90°16'42''W

1 (CR: AM422170, cytb: AM422148)

40

Santiago (Puerto Egas)

0°14'18''S, 90°52'25''W

30

San Cristobal (Isla Lobos, Zona Naval)

0°52'30''S, 89°36'00''W

47

Caamaño

0°46'58''S, 90°17'42''W

30

Zalophus californianus (California)

Pacific Coast (Monterey Bay)

Año Nuevo Island

37°06'N, 122°19"W

10 (CR: AM422175/AM422176/AM422178–AM422184/AM422186; cytb: AM422153/AM422154/AM422156–AM422162/AM422164)

14

Moss Landing Beach

36°47'N, 121°47W

2 (CR: AM422177/AM422185/85, cytb: AM422155/AM422163)

2

Pacific Coast (Channel Islands)

San Miguel

See [30]

3 (CR: L37028/L37030/L37031)

-

San Nicolas

1 (CR: L37032)

-

Punta Banda

2 (CR: L37025/L37026)

-

Gulf of California

Zalophus japonicus (Japan)

Hobi Shell Mound

See [37]

3 (CR:AB262362–AB262364)

-

Rebun Island

1 (CR:AB262365)

-