The abundance of spawning-age female blue crabs in the Chesapeake Bay increased to 147 million in 2013, compared with 97 million in 2012. This number is below the 215 million target but remains above the 70 million threshold.
April 2013: The Chesapeake Bay winter dredge survey is an annual count of the Bay’s blue crab population, and a critical component of blue crab management. The information gathered on abundance, young-of-the-year and spawning stock—those crabs that will mature enough to reproduce during the upcoming year—allows fisheries managers to set commercial and recreational harvest limits for the season ahead.
Closed captions: http://www.youtube.com/watch?v=28mvEE7ydXA
Produced by Steve Droter
Music: “Elle Aime Ca” by Löhstana David
Perhaps no species is more closely associated with the Chesapeake Bay than the blue crab. Because they reproduce by the millions and eat virtually anything, crabs are one of the Bay’s most hardy species. Good water quality and adequate habitat are important for the crab’s continued health.
A target abundance of 215 million spawning-age female crabs was adopted in 2011.
The Chesapeake Bay blue crab fishery is currently operating sustainably, according to the recently released 2013 Chesapeake Bay Blue Crab Advisory Report and Figures. While the report highlights the health of the blue crab population, it also recommends continued work to sustain robust crab populations over the long term.
The report was developed by the Chesapeake Bay Stock Assessment Committee, which includes scientists and representatives from federal and state governments as well as academic institutions. It is based on data collected in the Bay-wide Blue Crab Winter Dredge Survey (a cooperative effort between Maryland and Virginia) and on annual estimates of blue crab harvest. The report recommends:
Based on recommendations from the 2011 Chesapeake Bay Blue Crab Advisory Report, this indicator now tracks spawning-age female blue crab abundance and harvest in relation to targets and thresholds for this portion of the population. Previously the indicator tracked total adult abundance and harvest (males and females) in relation to interim targets and thresholds for that population.
National Oceanic and Atmospheric Administration (NOAA)
NOAA Chesapeake Bay Office