A Macroscopic to Microscopic Study of the Effects of Barotrauma and the Potential for Long-term Survival in Pacific Rockfish. Pribyl, A., L. Ph.D. Thesis, 2010.
A Macroscopic to Microscopic Study of the Effects of Barotrauma and the Potential for Long-term Survival in Pacific Rockfish [pdf]Paper  abstract   bibtex   
approved: _____________________________________________________________________ Carl. B. Schreck Steven J. Parker Depleted species of rockfish (Sebastes spp.) from the Northeast Pacific experience high discard mortality due to "barotrauma," induced from the rapid change in pressure during capture. Research suggests rockfish have the potential to survive barotrauma if immediately recompressed, but the potential for long-term recovery is unknown. In this project, we studied the injuries that occur in rockfish during barotrauma and the potential for rockfish to recover from these injuries using a macroscopic to microscopic to molecular approach. We first assessed multiple species of rockfish for macroscopic and tissue-level injuries as a result of barotrauma; these injuries tended to be species-specific and included ruptured swimbladders, emphysema in the heart ventricle, emboli in the rete mirabile, and emboli in the head kidney. Next we investigated the potential for longer-term recovery in black rockfish (S. melanops) that underwent simulated decompression from 4.5 ATA (35 m depth) and subsequent recompression using hyperbaric pressure chambers. We assessed recovery over a 31 day period at three different time points at the macroscopic level, tissue level, blood level, and molecular level. Macroscopic and tissue

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