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Full-Text Articles in Mechanical Engineering

Directional Wave Spectra Using An Acoustic Doppler Current Profiler, William T. Stockhausen Jan 1994

Directional Wave Spectra Using An Acoustic Doppler Current Profiler, William T. Stockhausen

Dissertations, Theses, and Masters Projects

No abstract provided.


Life History And Fisheries Ecology Of Weakfish, Cynoscion Regalis, In The Chesapeake Bay Region, Susan Lowerre Jan 1994

Life History And Fisheries Ecology Of Weakfish, Cynoscion Regalis, In The Chesapeake Bay Region, Susan Lowerre

Dissertations, Theses, and Masters Projects

Otoliths, scales, dorsal spines, and pectoral fin rays were compared to determine the best hardpart for ageing weakfish, Cynoscion regalis. Sectioned otoliths showed the clearest marks and were validated by the marginal increment method for ages 1-5. Traditionally-used scales were found to be less-precise and to underage older fish. Most weakfish from the Chesapeake Bay region were 200-600 mm TL and ages 1-4. Weakfish were not fully-recruited to commercial foodfish grades until age 2. Maximum observed age was 17 from a Delaware Bay fish collected in 1985. Current maximum observed ages were age 12 in Chesapeake Bay and age 11 ...