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Gas Bubble Disease Due to Helicopter Transport of Young Pink Salmon
Author(s) -
Hauck A. K.
Publication year - 1986
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(1986)115<630:gbddth>2.0.co;2
Subject(s) - oncorhynchus , distension , yolk sac , atmospheric pressure , anatomy , supersaturation , fish <actinopterygii> , chemistry , biology , medicine , fishery , surgery , meteorology , physics , embryo , organic chemistry
When 0.2‐g pink salmon Oncorhynchus gorbuscha were carried by helicopter in Alaska, total gas pressure in the transport water reached 71.3 mm Hg (109.4% of barometric pressure). Gross and microscopic lesions in swim bladders of fish progressed during transport to tympanitic dilatation, then to separation of laminae and rupture. Other associated signs and lesions were exophthalmos, cranial swelling, edematous gill lamellae, hemoperitoneum, emphysema of the yolk sac, and distension and rupture of the yolk sac membrane. Rapid reduction of barometric pressure during the flight and the subsequent increase in dissolved‐gas supersaturation caused gas bubble disease and tissue alterations that affected health and survival of the fish.