Study by Norwegian Institute of Marine Research suggests genetic "instructions" passed from mother cod to embryos change depending on the water temperature experienced in the months prior to spawning.
New UK research reveals "hidden vulnerability" where lower levels of phytoplankton due to warmer seas could have a huge knock-on effect on commercial fish stocks.
Nofima researcher Elisabeth Ytteborg is researching how warmer oceans affect cod farming - and says rising seawater temperatures around Norway puts its future farmed fish at risk.
