| S. | Salmo |
| ATL | Atlantic |
| MED | Mediterranean |
| AD | Adriatic |
| DA | Danubian |
| MA | Marmoratus |
| AIIAD | Italian Association of Fresh Water Ichthyologists |
| ESU | Evolutionarily significant units |
| LDH-C1* | Lactate dehydrogenase-C1 |
| RFLP-PCR | Restriction Fragment Length Polymorphism—PCR |
| MCMC | Monte-Carlo Markov-Chain |
| HYB | Hybrids |