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Immobilization of Grey Seals

P. A. Jewell and E. A. Smith
The Journal of Wildlife Management
Vol. 29, No. 2 (Apr., 1965), pp. 316-318
Published by: Wiley on behalf of the Wildlife Society
DOI: 10.2307/3798436
Stable URL: http://www.jstor.org/stable/3798436
Page Count: 3
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Immobilization of Grey Seals
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Abstract

To immobilize grey seals (Halichoerus grypus) for marking, the Cap-Chur gun was used with two analogues of succinylcholine--suxamethonium, the methyl derivative, and suxethonium, the ethyl derivative. A modified needle was developed to hold in the seals' hide even when the syringe struck at an angle. Experiment determined that an effective dosage of the drugs used gave erratic results because the seals' 2-inch-thick layer of subcutaneous fat made it difficult to inject directly into the muscle and because these drugs were not sufficiently quick acting to prevent a seal's escape before immobilization was accomplished. The projectile syringe technique may have wider application with other drugs.

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