Table 1

Assessment of the monophyletic origin of reproductive organ characteristics.

H0

-ln L

Δ

Prell

PBI


Monophyly assumed across all snails

Optimal tree

3240.98

Dart number

3330.76

89.78

0.031

<0.001*

Blade number

3538.66

297.68

<0.001*

<0.001*

Presence of perpendicular blades

3283.10

42.12

0.399

<0.001*

Stylophore number

3450.29

209.31

<0.001*

<0.001*

Gland number

3492.69

251.71

<0.001*

<0.001*

Shape of glands

3705.34

464.36

<0.001*

<0.001*

Presence of flagellum

3326.69

85.71

0.044

<0.001*

Presence of diverticulum

3245.56

4.58

0.905

0.002*

Monophyly assumed within families

Optimal tree

3240.98

Dart number

3295.14

54.16

0.234

<0.001*

Blade number

3351.62

110.64

0.012

<0.001*

Presence of perpendicular blades

3283.11

42.13

0.399

<0.001*

Stylophore number

3386.55

145.57

<0.001*

<0.001*

Gland number

3373.91

132.92

0.005

<0.001*

Shape of glands

3455.91

214.93

<0.001*

<0.001*

Presence of flagellum

3269.58

28.60

0.574

<0.001*

Presence of diverticulum

3240.98

0

0.962

0.843


The following ancestral states were assumed: Zero darts, no blades on the dart, no perpendicular blades on the blades, two functional and two vestigial stylophores, many tubular glands, a simple gland shape, and absence of the flagellum of the penis and diverticulum of the spermatophore-receiving organs. Abbreviations: -ln L, negative natural logarithmic likelihood value for the hypothesis, as calculated from a constrained tree using ML in PAUP*. Δ, difference from the optimal tree; Prell, probability according to the Shimodaira-Hasegawa test; PBI, Bayesian posterior probability; *, Significance after Bonferroni correction.

Koene and Schulenburg BMC Evolutionary Biology 2005 5:25   doi:10.1186/1471-2148-5-25

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