Table 1.
Sample size and molecular diversity indices for Chromis dimidiata, C. fieldi, and C. margaritifer based on mitochondrial DNA cytochrome C oxidase subunit 1 (COI) sequences
| Collection locality | N | HN | τ | Haplotype diversity (h ± SD) | Nucleotide diversity (π ± SD) | Fu's FS |
|---|---|---|---|---|---|---|
| Chromis dimidiata | ||||||
| Red Sea, Saudi Arabia (RDS) | 32 (26) | 14 | 1.23 | 0.75 ± 0.08 | 0.0019 ± 0.0014 | −13.44 |
| Chromis fieldi | ||||||
| Chagos Archipelago (CHA) | 11 (11) | 5 | 1.64 | 0.82 ± 0.08 | 0.0024 ± 0.0018 | −1.27 |
| Christmas Island (XMA) | 2 | n/a | n/a | n/a | n/a | n/a |
| Republic of Maldives (MAL) | 6 | 3 | 1.57 | 0.60 ± 0.22 | 0.0016 ± 0.0015 | 1.56 |
| Republic of Seychelles (SEY) | 2 | n/a | n/a | n/a | n/a | n/a |
| Socotra, Yemen (SOC) | 8 (8) | 2 | 0.83 | 0.53 ± 0.05 | 0.0009 ± 0.0009 | 1.36 |
| All samples | 29 (19) | 6 | 1.09 | 0.67 ± 0.06 | 0.0016 ± 0.0013 | −1.86 |
| Chromis margaritifer | ||||||
| Ashmore Reef, Aus. (ASH) | 48 (49) | 9 | 3.0 | 0.31 ± 0.09 | 0.0008 ± 0.0008 | −8.71 |
| Cartier Reef, Aus. (CAR) | 23 (23) | 5 | 2.98 | 0.32 ± 0.12 | 0.0006 ± 0.0007 | −3.90 |
| Christmas Island, Aus. (XMA) | 83 (58) | 17 | 0.49 | 0.39 ± 0.07 | 0.0008 ± 0.0008 | −24.58 |
| Cocos/Keeling Islands, Aus. (COC) | 14 (14) | 7 | 1.08 | 0.69 ± 0.14 | 0.0015 ± 0.0013 | −5.14 |
| All samples | 168 (144) | 29 | 0.56 | 0.38 ± 0.05 | 0.0008 ± 0.0008 | n/a |
Populations with N < 6 were not individually assessed but included in overall species calculations. Number of samples from each population included in microsatellites analysis is given in parentheses. Numbers in bold are significant, p < 0.02 as per Fu (1997).
HN: number of haplotypes; τ: population expansion parameter.