| Ae1b | Anion exchanger 1b |
| BAF | Bafilomycin A1 |
| Ca2 | Carbonic anhydrase 2 |
| EIPA | 5-ethylisopropyl amiloride |
| FW | Freshwater |
| HA | H+-ATPase |
| HR | H+-ATPase-rich |
| IF | Immunofluorescence |
| Nhe | Na+/H+ exchanger |
| Rhcg2 | Rhesus C glycoprotein 2 |
| RO | Removal of the opercula |
| SIET | Scanning ion-selective electrode technique |
| SW | Seawater |