National breeding programs of arctic charr and rainbow trout with genotyping by sequencing

Last changed: 30 September 2020
A shoal of chars. Photo.

Arctic charr and rainbow trout are the two most important farmed species for Swedish Aquaculture and selective breeding is a key factor for the aquaculture production of these species. This project aim to boosting the Arctic charr and rainbow trout breeding programs by combining quantitative genetics approaches with modern genotyping by sequencing (GBS).

Arctic charr and rainbow trout are the two most important farmed species for Swedish Aquaculture with a combined production of approximately 10,000 tn (FEAP 2018). Selective breeding is a key factor for boosting the aquaculture production of the above species. Most interestingly a breeding program for Arctic charr has been running in Sweden for over 20 years (Nilsson et al 2010), where selection is performed for a number of traits (e.g. growth, late maturation etc.). Additionally, a breeding program for rainbow trout has been re-initiated after it had been shelved in the nineties due to disease outbreaks. Selective breeding on both programs is based only on information derived by the pedigree, without any usage of genomic information.

Current project will aim on boosting the Arctic charr and rainbow trout breeding programs by combining quantitative genetics approaches with modern genotyping by sequencing (GBS).

The main research topics of the project will include the following:

  1. Generate genomic resources specifically tailored for the Swedish Arctic charr and rainbow trout stocks
  2. Estimation of genetic diversity of the breeding nucleus of Arctic charr and rainbow trout and sustainable management of inbreeding
  3. Improve key production traits, including growth and egg survival.

Partners involved

  • Principal investigator; Christos Palaiokostas from the Department of Animal Breeding and Genetics, VH-Faculty, SLU.
  • Co-Investigators; Dirk-Jan de Koning and Henrik Jeuthe from the Department of Animal Breeding and Genetics, VH-Faculty, SLU.
Facts:

The project started in spring 2018 and last for three years. The project is funded by SLU Aquaculture, which support cross-faculty collaborations to further strengthen aquaculture research at SLU. Read more about SLU Aquaculture, current research projects and upcoming calls.

Page editor: eva-stina.lindell@slu.se