March 21, 2024 — Anew study found that releasing red king crabs as early as possible after they are reared in a hatchery may improve young crab survival and save operational costs. Researchers at the Alaska Fisheries Science Center have noted that the optimal time to release hatchery-raised red king crabs is immediately following their transition from freely swimming planktonic larvae to settling as bottom-dwelling juveniles.
The red king crab was one of Alaska’s most important commercial and subsistence fisheries. In the 1960s, it was especially commercially important around Kodiak. However, the stock crashed in the late 1970s. Researchers believe the crash was a combination of climatic shifts, changes in the food web structure, recruitment failure, and overfishing.
According to NOAA Fisheries and the Alaska Fisheries Science Center, the commercial fishery has been closed since 1983, and the Kodiak stock still has not recovered. Due to the lack of recovery, the consideration of stock enhancements has grown through the release of hatchery-reared juveniles to bolster the wild population.
The Alaska King Crabs Research Rehabilitation and Biology program (AKCRRAB) was formed by NOAA Fisheries, commercial hatcheries and fishing groups, university groups, and State and Tribal governments. As an Alaska Sea Grant partnership and conducted by a research program coalition of state, federal, and stakeholder groups’ views to examine the region’s long-term economic development and sustainability.
Read the full article at the National Fisherman