A conserved haplotype controls parallel adaptation in geographically distant salmonid populations.

摘要: Salmonid fishes exhibit extensive local adaptations owing to abundant environmental variation and precise natal homing. This adaptation makes conservation restoration of salmonids a challenge. For example, defining unambiguous units is difficult, attempts often fail inadequate adaptive matching translocated populations. A better understanding the genetic architecture in could provide valuable information assist conserving restoring natural populations these important species. Here, we use combination laboratory crosses next-generation sequencing investigate parallel rapid development rate two geographically genetically distant rainbow trout (Oncorhynchus mykiss). Strikingly, find that not only mechanism used but conserved haplotype responsible for this intriguing adaptation. The repeated across geographical areas be general theme have implications restoration.