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Table 3 Population means and SD, average divergence among populations of sperm traits. Divergence expressed in units of average within-population phenotypic standard deviation (SD).

From: Intraspecific divergence in sperm morphology of the green sea urchin, Strongylocentrotus droebachiensis: implications for selection in broadcast spawners

 

Pacific

West Atlantic

East Atlantic

  
 

Mean

SD

Mean

SD

Mean

SD

Avg SD

Divergence

HL

6.95

0.29

6.22

0.36

5.74

0.44

0.37

2.21

HW

1.6

0.07

1.64

0.13

1.94

0.12

0.10

2.16

AL

42.4

1.20

44.02

1.79

45.02

0.75

1.24

1.40

TOTAL

49.32

1.09

50.31

1.80

50.77

0.78

1.22

0.79

MA

1.67

1.18

2.12

1.17

1.75

1.03

1.13

0.27