Table 1. Sequence characteristics of the 18S rRNA gene from 8 species in the genus Acartia, and 184 other copepod species.
Molecules | Length of Acartia (bp) | Length (bp) | GC | Nt | Nv | Nc | PI(%PI) |
---|---|---|---|---|---|---|---|
18S | 1,689–1,787 | 1,694–1,742 | 48.5 | 1,878 | 974 | 854 | 784 (41.7) |
TCs | 849–869 | 859–862 | 49.1 | 864 | 258 | 603 | 178 (20.6) |
CVs | 829–938 | 834–881 | 47.8 | 1,014 | 716 | 251 | 606 (59.8) |
V1 | 12–23 | 22–24 | 41.3 | 24 | 21 | 3 | 18 (75) |
V2 | 184–214 | 189–213 | 45.9 | 245 | 178 | 59 | 149 (60.8) |
V3 | 91–92 | 90–93 | 47.3 | 96 | 55 | 38 | 45 (46.9) |
V4 | 213–242 | 219–256 | 45.9 | 286 | 188 | 70 | 165 (57.7) |
V5 | 71–75 | 70–74 | 53.9 | 75 | 64 | 11 | 52 (69.3) |
V7 | 86–141 | 74–93 | 48.0 | 100 | 68 | 30 | 57 (57) |
V8 | 62–67 | 62–68 | 54.4 | 76 | 51 | 21 | 44 (57.9) |
V9 | 85–97 | 91–98 | 49.4 | 112 | 91 | 19 | 76 (67.9) |
18S, copepod 18S rRNA genes with the two ends trimmed (all the variable regions were intact); TCs, Total conserved region sequences in 18S; CVs, combination of all variable regions; V1-9, variable regions; GC, GC contents; Nt, total number of sites compared; Nc, total number of conserved sites; Nv, total number of variable sites; PI, parsimony-informative sites.