Table 5.
Summary of GWAS analysis in aquaculture bivalves for heat tolerance
| Species | Bay Scallop Argopecten irradians irradians | Hybrids of Crassostrea angulata × C. gigas | Dwarf clam Mulinia lateralis | Northern quahogs Mercenaria mercenaria |
|---|---|---|---|---|
| Reference | [53] | [52] | [55] | Current study |
| Heat challenge | Heart rate for Arrhenius break temperature | Submerging at 42℃ for 2 h, then back to normal temperature | At 30℃ for 10 days, then back to 22℃ for recovery | At 1℃/day from 24 to 35℃ and stay 2 days, back 24℃ |
| Genotyping | Gill. Sequencing using multi-isoRAD approach | Gill. Sequencing | Gill. Sequencing using the iso-RAD approach | Muscle/hemocytes. ∼66K SNP array |
| Associated SNP | 14 SNPs |
18 SNPs 26 genes |
3 SNPs 10 genes |
1 SNP |
| Major Genes | PC4 gene for repairing DNA | Ca2+ influx, transcriptional signal regulation, protein degradation, or folding | ETHR/EHF signaling pathway | See Table 4 |
| Heritability | NA | NA | 0.375 ± 0.127 | 0.680 ± 0.063 |