Table 7.
Genes Under Putative Positive Selection Based on Pairwise Ka/Ks Values > 1
| Pairwise | Gene | Length, bp | Pi | Ks | Ka | Ka/Ks |
| Single | ||||||
| AB versus OV | Aquaporin fa-chip | 396 | 0.0202 | 0.0103 | 0.0273 | 2.650 |
| Succinate dehydrogenase | 450 | 0.0178 | 0.0085 | 0.0214 | 2.518 | |
| 20-beta-hydroxysteroid dehydrogenase | 501 | 0.0140 | 0.0084 | 0.0159 | 1.893 | |
| 26s proteasome nonatpase regulatory subunit 9 | 636 | 0.0173 | 0.0140 | 0.0227 | 1.621 | |
| Muscle-type creatine kinase ckm1 | 438 | 0.0092 | 0.0098 | 0.0151 | 1.541 | |
| Darmin protein | 363 | 0.0083 | 0.0061 | 0.0090 | 1.475 | |
| Serine hydrolase-like protein | 489 | 0.0226 | 0.0180 | 0.0247 | 1.372 | |
| Tetratricopeptide repeat protein 35 | 600 | 0.0034 | 0.0078 | 0.0107 | 1.372 | |
| Transmembrane protein 16f | 357 | 0.0114 | 0.0120 | 0.0148 | 1.233 | |
| Dead (asp-glu-ala-asp) box polypeptide 56 | 537 | 0.0075 | 0.0080 | 0.0098 | 1.225 | |
| Novel protein (zgc:100919) | 384 | 0.0131 | 0.0116 | 0.0139 | 1.198 | |
| loc733309 protein | 363 | 0.0138 | 0.0128 | 0.0142 | 1.109 | |
| Alpha-sialyltransferase st3gal v | 345 | 0.0116 | 0.0111 | 0.0119 | 1.072 | |
| Trypsinogen 2 | 540 | 0.0315 | 0.0311 | 0.0325 | 1.045 | |
| Tilapia versus OV | Beta-galactoside-binding lectin | 378 | 0.0212 | 0.0119 | 0.0243 | 2.042 |
| Decaprenyl-diphosphate synthase subunit 2 | 348 | 0.0201 | 0.0120 | 0.0231 | 1.925 | |
| Elastase 2-like protein | 540 | 0.0225 | 0.0152 | 0.0253 | 1.664 | |
| cdc42-interacting protein 4 homolog | 306 | 0.0132 | 0.0157 | 0.0167 | 1.064 | |
| Cytochrome c oxidase subunit 4 isoform mitochondrial precursor | 516 | 0.0177 | 0.0178 | 0.0182 | 1.022 | |
| Regulator of g-protein signaling 18 | 417 | 0.0240 | 0.0218 | 0.0283 | 1.298 | |
| Serum paraoxonase arylesterase 2 | 435 | 0.0300 | 0.0305 | 0.0336 | 1.102 | |
| hbaa_serqu ame: full = hemoglobin subunit alpha-a ame: full = hemoglobin alpha-a chain ame: full = alpha-a-globin | 426 | 0.0423 | 0.0403 | 0.0445 | 1.104 | |
| Suppression of tumorigenicity 14 (colon epithin) | 477 | 0.0359 | 0.0266 | 0.0400 | 1.504 | |
| Tilapia versus AB | Signal sequence alpha | 528 | 0.0076 | 0.0078 | 0.0126 | 1.615 |
| Nadh dehydrogenase 1 alpha subcomplex subunit mitochondrial precursor | 330 | 0.0182 | 0.0135 | 0.0199 | 1.474 | |
| mgc85594 protein | 402 | 0.0150 | 0.0123 | 0.0159 | 1.293 | |
| ca++ cardiac fast twitch 1 like | 447 | 0.0201 | 0.0180 | 0.0212 | 1.178 | |
| Two | ||||||
| Tilapia versus OV | Annexin a4 | 534 | 0.0356 | 0.0361 | 0.0366 | 1.014 |
| Tilapia versus AB | 0.0300 | 0.0279 | 0.0314 | 1.125 | ||
| Tilapia versus OV | Lipid phosphate phosphohydrolase 2 | 258 | 0.0233 | 0.0149 | 0.0268 | 1.799 |
| Tilapia versus AB | 0.0233 | 0.0149 | 0.0268 | 1.799 | ||
| AB versus OV | 39s ribosomal protein mitochondrial precursor | 318 | 0.0126 | 0.0138 | 0.0165 | 1.196 |
| Tilapia versus AB | 0.0189 | 0.0138 | 0.0207 | 1.500 | ||
| AB versus OV | Ubiquinol-cytochrome c rieske iron-sulfur polypeptide 1 | 441 | 0.0136 | 0.0096 | 0.0150 | 1.563 |
| Tilapia versus OV | 0.0159 | 0.0096 | 0.0181 | 1.885 | ||
| AB versus OV | Epithelial cadherin precursor | 651 | 0.0691 | 0.0671 | 0.0742 | 1.106 |
| Tilapia versus OV | 0.0799 | 0.0807 | 0.0857 | 1.062 | ||
| Three | ||||||
| AB versus OV | Cell cycle control protein 50a | 372 | 0.0162 | 0.0109 | 0.0218 | 2.000 |
| Tilapia versus OV | 0.0431 | 0.0218 | 0.0558 | 2.560 | ||
| Tilapia versus AB | 0.0457 | 0.0439 | 0.0483 | 1.100 |
Note.—Of the 33 genes, 27 were found with Ka/Ks > 1 only in single cichlid pairwises, five in two pairwises, and one in all three pairwise comparisons.