|
Character/index
|
Morphotypea
|
pvalue
|
|---|
|
Fragilis
|
Stagnalis
|
|---|
|
Whorls number
|
6.00 to 7.00
|
5.87 to 7.37
|
n.s.
|
|
6.67 ± 0.23
|
6.56 ± 0.30
|
|
Shell height (SH)
|
25.1 to 39.1
|
34.9 to 46.8
|
0.00
|
|
34.6 ± 2.9
|
40.8 ± 2.7
|
|
Shell width (SW)
|
11.8 to 19.3
|
17.3 to 24.0
|
0.00
|
|
17.2 ± 1.5
|
20.7 ± 1.6
|
|
Spire height (ShH)
|
12.5 to 20.4
|
16.4 to 24.6
|
0.00
|
|
17.5 ± 1.7
|
20.7 ± 2.0
|
|
Body whorl height (BWH)
|
17.8 to 29.3
|
26.6 to 35.7
|
0.00
|
|
26.2 ± 2.2
|
31.5 ± 2.0
|
|
Aperture height (AH)
|
12.2 to 22.1
|
18.9 to 27.3
|
0.00
|
|
19.7 ± 1.2
|
23.7 ± 1.5
|
|
Aperture width (AW)
|
9.3 to 13.8
|
11.0 to 22.4
|
0.00
|
|
12.5 ± 1.0
|
14.9 ± 1.6
|
|
SW/SH
|
0.45 to 0.58
|
0.46 to 0.56
|
n.s.
|
|
0.51 ± 0.03
|
0.50 ± 0.02
|
|
SpH/SH
|
0.45 to 0.57
|
0.48 to 0.55
|
n.s.
|
|
0.51 ± 0.03
|
0.51 ± 0.02
|
|
BWH/SH
|
0.73 to 0.83
|
0.71 to 0.81
|
0.004
|
|
0.77 ± 0.02
|
0.75 ± 0.03
|
|
AH/SH
|
0.50 to 0.70
|
0.51 to 0.61
|
0.048
|
|
0.58 ± 0.03
|
0.56 ± 0.03
|
|
AW/AH
|
0.52 to 0.80
|
0.52 to 0.74
|
n.s.
|
|
0.63 ± 0.05
|
0.64 ± 0.04
|
-
aItalic values, minimum and maximum values; upright values, mean value and standard deviation (σ). n.s., non-significant difference between mean values. The significance of differences is checked by Student's t test.
