Skip to main content

Table 4 Mean numbers of the different evolutionary events inferred in order to reconcile the plant and smut phylogenies by TreeFitter.

From: Cophylogeny of the anther smut fungi and their caryophyllaceous hosts: Prevalence of host shifts and importance of delimiting parasite species for inferring cospeciation

Approach

Plant tree

Fungal tree

Costs

Cospeciation

Duplication

Host shift

Sorting events

Nb of events

Total cost

P

Keeping one strain per host species

Max

A1

C

6

0.5

16.5

2.5

25.5

32

0.0048**

   

D

1

0

22

0

23

0

0.0371*

  

A2

C

7

0.5

15.5

3.5

26.5

31

0.0042**

   

D

1

0

22

0

23

0

0.0399*

 

Min

A1

C

4

0

19

1

24

36

0.0430*

   

D

1

0

22

0

23

0

0.0364*

  

A2

C

5

0

18

2

25

35

0.0291*

   

D

1

0

22

0

23

0

0.0434*

Keeping a single representative per fungal species

MinT

B1

C

3

0

12

2

17

30

0.0652

   

D

0.5

0

14.5

0

15

0

0.3209

  

B2

C

3

0

12

2

17

23

0.0903

   

D

0.5

0

14.5

0

15

0

0.3355

 

MaxT

B1

C

1

0

14

1.5

16.5

30

0.1937

   

D

0

0

15

0

15

0

1

  

B2

C

1

0

14

1.5

16.5

30

0.2331

   

D

0

0

15

0

15

0

1

  1. Eight data sets were used; see legend from Table 3 for their correspondence. Two sets of costs were used: C) maximizing the likelihood of cospeciation events: cospeciation = -1, duplication = 0, sorting events = 2, host shifts = 2; D) minimizing the number of events: cospeciation = 0, duplication = 0, sorting events = 2, host shifts = 0.