How does water temperature affect the time needed for Atlantic herring eggs to hatch?

The temperature of the surrounding water is a critical factor in the rate of development for Atlantic herring eggs. Generally, colder water temperatures result in a longer developmental period, while warmer temperatures significantly accelerate the hatching process.1

Specifically, the time required for these eggs to hatch varies dramatically based on the thermal environment:

• At 0.1 °C (just above 32 °F): The developmental period takes as long as 47 to 50 days.1
• At 19 °C (66 °F): The hatching process is completed in only eight days.1

This relationship highlights how environmental conditions directly influence the reproductive cycle of the species.1