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Table 1 Genetic diversity measures in Pachygrapsus marmoratus from four sampling sites in the Ligurian Sea. For each site, the GPS coordinates and N, number of analysed individuals, are reported. NA, number of alleles; AR, allelic richness; AP, number of private alleles; HO, observed heterozygosity; He, expected unbiased heterozygosity. Means ± SE values. *, P < 0.005 (after Bonferroni correction)

From: Investigation of mechanisms underlying chaotic genetic patchiness in the intertidal marbled crab Pachygrapsus marmoratus (Brachyura: Grapsidae) across the Ligurian Sea

 

Locus

79

109

101

108

183

99

16

187

84

6

Overall

Porto Mediceo (PM)

NA

2

40

17

5

14

20

35

16

2

11

16.2 ± 4.08

43.549 N, 10.294 E

AR

2.00

38.63

16.94

4.83

13.18

19.88

34.83

15.44

2.00

10.71

15.84 ± 3.99

 

AP

0.00

2.00

0.00

0.00

1.00

2.00

7.00

1.00

0.00

0.00

13

N = 80

HO

0.49

0.95

0.92

0.63

0.71

0.96

0.99

0.58

0.37

0.62

0.72

 

He

0.50

0.96

0.87

0.64*

0.69

0.91

0.87

0.59

0.32

0.60

0.70

Secche della Meloria (SM)

NA

3

35

26

10

16

23

27

22

3

15

18.0 ± 3.37

43.546 N, 10.218 E

AR

2.87

34.90

25.10

9.61

15.27

22.72

26.78

21.10

2.86

14.52

17.57 ± 3.31

 

AP

0.00

2.00

0.00

1.00

1.00

2.00

4.00

3.00

1.00

1.00

15

N = 81

HO

0.53

0.99

0.89

0.68

0.79

0.96

0.97

0.77

0.41

0.73

0.77

 

He

0.56

0.95

0.90

0.71

0.75

0.90

0.84

0.75

0.40

0.69

0.75

Riomaggiore (RM)

NA

3

39

27

9

13

26

30

17

2

15

18.1 ± 3.84

44.096 N, 9.739 E

AR

2.86

37.46

26.77

8.59

12.52

25.48

29.94

16.53

2.00

14.49

17.66 ± 3.75

 

AP

0.00

1.00

3.00

1.00

0.00

1.00

1.00

1.00

0.00

2.00

10

N = 80

HO

0.53

0.99

0.93

0.61

0.73

0.97

0.99

0.71

0.28

0.74

0.75

 

He

0.50

0.96

0.92*

0.66

0.75

0.93

0.83

0.69

0.28

0.75

0.73

Le Grazie (LG)

NA

3

37

24

10

13

26

29

17

2

14

17.5 ± 3.60

44.067 N, 9.841 E

AR

2.87

36.01

23.76

9.49

12.60

25.31

28.89

17.00

2.00

13.32

17.12 ± 3.54

 

AP

0.00

0.00

0.00

1.00

0.00

2.00

3.00

1.00

0.00

3.00

10

N = 80

HO

0.52

0.96

0.96

0.62

0.80

0.96

0.97

0.67

0.41

0.74

0.76

 

He

0.55

0.96

0.89

0.68*

0.80

0.91

0.83

0.68

0.41

0.73

0.74