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Causes and Controls of Freshwater Drum Mortality during Transportation
Author(s) -
Johnson David L.,
Metcalf Michael T.
Publication year - 1982
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1982)111<58:cacofd>2.0.co;2
Subject(s) - drum , environmental science , fishery , geography , biology , archaeology
The freshwater drum Aplodinotus grunniens is an abundant and underutilized species in Lake Eric. Transportation of live fish from commercial shore seines to pay‐fishing lakes causes high immediate and delayed mortality during warm summer months. Freshwater drums transported 6 hours had 4% immediate mortality and 94% delayed mortality (over 1–2 weeks). Salt (5 g/liter NaCl), low hauled‐fish densities (60 g fish/liter water), and late‐summer transport significantly (P < 0.05) reduced delayed mortality. Fish tagged after transportation had a significantly higher delayed mortality than those not tagged. Capture stress in seines was a more important cause of delayed mortality than transportation or stocking in ponds.