Acronym NA
Category
Fisheries
Title Phenotypic and genomic variation within the eastern Baltic cod population Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National Coordinator Laurila Anssi Coordinator email Laurila.Anssi@uu.se
Coordinator institution
UU - Uppsala University (Sweden)
Institutions involved
NA
Start year 2022 End year 2024 Funding (€) € 300,000 Website NA Summary The Atlantic cod is the main top fish predator in the pelagic of the Baltic sea and of huge ecological and economic value. However, the situation of the eastern cod stock occurring in the Baltic proper is dire. Due to overfishing, poor growth of individual fish and recruitment failure the stock is at its all-time low and since 2019 the cod fishery is closed. Intriguingly, the fish in the Åland sea are still large and in good condition, and a large proportion of the fish is in spawning condition. Recent preliminary studies show the sperm are motile and the eggs can hatch at lower salinities than those of the fish from the southern Baltic proper. In this project, we will focus on the adaptive potential of Baltic cod in relation to changing conditions in the Baltic sea. In the laboratory, we will compare key early life history parameters including sperm motility, egg buoyancy and hatching success and larval survival in a range of salinities between northern and southern Baltic proper cod. We will conduct a factorial experiment with salinity and temperature to investigate the adaptive potential of cod to future conditions in the Baltic sea. These experiments will be combined with transcriptomic and epigenomic analyses to investigate the physiological and genetic mechanisms behind the adaptive divergence in response to environmental conditions. These analyses will give a detailed picture on the adaptive potential within the eastern cod population in the Baltic proper.
Keywords
Genetic;
Cod;
Climate change;
Fish;
Fish reproduction;
Fish biology;
Impacts;
Marine Region
22
Southern Central Baltic-West (27.IIId.25)
18
West of Gotland (27.IIId.27)
2
Marine Region Map
