Modeling submergence success of discarded yelloweye rockfish (Sebastes ruberrimus) and quillback rockfish (Sebastes maliger): Towards improved estimation of total fishery removals

摘要: Abstract Identification of variables that can be used to predict discard mortality is an important step towards improving estimates total fishery removals. I explored the utility capture depth, six external signs barotrauma, two behavioral responses, and impairment index summed physical associated with rapid decompression at predicting submergence success hook-and-line captured yelloweye ( n  = 95) quillback  = 65) rockfish were released water's surface. Random forests classification models identify relative importance predictor  = 11) for each species explore ability these accurately individual success. Capture depth was identified as most variable in but provided little improvement model. The barotrauma sign maximal gas retention both rockfish. These findings suggest index, unlike able account variability or failure