Skip to main content

Table 1 Results of ML investigation of models of rates of change in life cycle and comparisons of reconstructions under "fossilized" character states at several nodes using BayesTraits.

From: Evolutionary lability of a complex life cycle in the aphid genus Brachycaudus

 

Model

Description

Likelihood1

A 2

6 parameters

A different rate for each possible transition

-17.90

 

1 parameter

A single transition rate

-23.57

B 2

6 parameters

A different rate for each possible transition

-20.92

 

1 parameter

A single transition rate

-23.67

A

Q01 and Q02 = 0

No loss of monoecy on herbs (i.e. no capture of woody host)

-22.45

 

Q10 and Q20 = 0

No acquisition of monoecy on herbs

-19.99

B

Q01 and Q02 = 0

No loss of monoecy on herbs (i.e. no re-capture of woody host)

-25.55

 

Q10 and Q20 = 0

No acquisition of monoecy on herbs

-22.92

Reconstructions under constraints in node3 states

 

A

Node 3, 6, 12 fossilized to 1 (heteroecious)

-21.86

 

Node 3, 6, 12 fossilized to 0 (monoecious on herbs)

-19.14

B

Node 3, 6, 12 fossilized to 1 (heteroecious)

-25.46

 

Node 3, 6, 12 fossilized to 0 (monoecious on herbs)

-22.16

A

Node 1 to 12 fossilized to 1 (heteroecious)

-23.46

 

Node 1 to 12 fossilized to 0 (monoecious on herbs)

-19.99

B

Node 1 to 12 fossilized to 1 (heteroecious)

-27.55

 

Node 1 to 12 fossilized to 0 (monoecious on herbs)

-22.92

  1. 1For each analysis, likelihoods given in the table are average likelihoods for the 100 trees (there was very little difference between trees).
  2. 2Two scenarios were investigated each time: A) facultative heteroecious species considered as heteroecious; B) facultative heteroecious species considered as monoecious on trees.
  3. 3Node numbers refer to those in Fig. 3.