Investigating the frequency of triploid Atlantic salmon in wild Norwegian and Russian populations.

ABSTRACT:

Background

Fish may display variations in ploidy, including three sets of chromosomes, known as triploidy. A recent study revealed a frequency of ~ 2% spontaneous (i.e., non-intentional) triploidy in domesticated Atlantic salmon produced in Norwegian aquaculture in the period 2007-2014. In contrast, the frequency of triploidy in wild salmon populations has not been studied thus far, and in wild populations of other organisms, it has been very rarely studied. In population genetic data sets, individuals that potentially display chromosome abnormalities, such as triploids with three alleles, are typically excluded on the premise that they may reflect polluted or otherwise compromised samples. Here, we critically re-investigated the microsatellite genetic profile of ~ 6000 wild Atlant

SUBMITTER: Jorgensen KM 

PROVIDER: S-EPMC6171226 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature