The water temperature is of major importance for how well juvenile sea urchins grow, new research trials by Nofima (The Norwegian Institute of Food, Fisheries and Aquaculture Research) shows.

The scientists charted how quickly juvenile farmed sea urchins grow at different water temperatures and consequently how much feed and water they need to achieve optimal growth.

In the wild the green sea urchin is found in water temperatures ranging from -1 to +20 °C. The researchers found that a temperature of 10 °C was the optimal temperature for feed conversion and growth.

The report points to the fact that there is a linear connection between feed intake and temperature.

“This project started thanks to the good collaboration between Sea Urchin Farm AS and Nofima. The Regional Council for Western Norway has been one of the funding sources, and contributed to the project being able to be implemented,” says Project Manager Sten Siikavuopio.

The results from several different sea urchin projects will be presented during the Fishery and Aquaculture Industry Research Fund (FHF) sea urchin seminar “From problem to resource” in Tromsø on March 17.

Further Reading:
Grows best at 10 degrees, Nofima