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Escaping the Surface: The Effect of Capture Depth on Submergence Success of Surface-Released Pacific Rockfish

Creator:

Hannah, Robert W., Parker, Steven J., and Matteson, Keith M.

Abstract:

We evaluated the effect of capture depth and fish size on the ability of several Pacific rockfishes Sebastes spp. to resubmerge after hook-and-line capture and surface release. We observed fish as they were released into a bottomless floating enclosure, and we recorded submergence success within a 5-min time limit. Submergence...

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the impact of such actions on stock rebuilding. Acknowledgments The charter vessel Misty, operating
Behavior of Nine Species of Pacific Rockfish after Hook-and-Line Capture, Recompression, and Release

Creator:

Hannah, Robert W. and Matteson, Keith M.

Abstract:

We evaluated the effect of barotrauma on the behavior of nine species of Pacific rockfish Sebastes spp. after hook-and-line capture and release using a video-equipped underwater release cage. Sampling was conducted across a range of bottom depths (12-194 m), mostly where barotrauma resulting from an expanded swim bladder and gaseous...

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ability of fish to overcome surface buoyancy. Acknowledgments The charter vessels Blitz, Misty, and