Field validation of dungeness crab RAMP underway

Crabs tell us about their vitality, using the language of reflex impairment and RAMP.

Yochum

Field validation of dungeness crab RAMP measures for discard mortality are underway off Newport, Oregon.  These field trials with combined RAMP measurements, fishery conditions, and mark and recapture experiments are a large scale field effort to develop RAMP tools for quantification of bycatch mortality (NOAA 2013).

Undersize Dungeness crab marked with a green T-bar spaghetti tag and released as part of the RAMP field validation experiment. The tag is inserted through the suture at the back of the carapace so that it can be retained through a molt. Picture and caption from Stoner and Yochum, 2013.