Table 2 Sequence characteristics and models of DNA evolution selected by the Akaike Information Criterion (AIC) method implemented in jModeltest version 0.1.1

Total aligned length (bp)

793

602

1395

656

2051

Variable sites

26

41

67

66

133

Parsimony informative (PI) sites

19

21

40

45

85

Number of observed PI indels

11

6

17

6

23

Nucleotide substitutions per site

0.02

0.02

-

0.02

-

Nucleotide diversity

0.04 ± 0.02

0.03 ± 0.02

-

0.02 ± 0.01

-

Divergence range within Rhizophora (%)

0.13-4.88

0.22-5.18

-

0.16-4.59

-

Best-fit model of nucleotide substitution (among the 88 tested models)

K81uf + I I = 0.82

TVM + I + G I = -0.67; G = 0.47

HKY + I + G I = 0.67; G = 0.8

GTR + G G = 0.40

GTR + I + G I = 0.67; G = 0.8