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- Title
Rotatory-flow technique as a means of detecting sublethal poisoning in fish populations.
- Authors
Lindarl, P. E.; Schwanbom, E.
- Abstract
The rotatory-flow technique has been applied to roach Leuciscus rutilus L. from the mercury-contaminated Lake Övre Hillen and from Lake Snösjön, which, as it chiefly receives spring-water, is supposed to contain water that is comparatively pure. A highly significant difference in the mean critical rate of rotation (in r.p.m.) was found between the two samples of fish which also differed but in a reverse way with respect to the amount of methylmercury hydroxide found in their muscles. For the combined samples of fish, the critical rate of rotation showed a highly significant negative correlation to the amount of mercurial per unit muscle. The appearance of the same relationship for the fish from Lake Snösjön indicates that also in "pure" natural waters the coordination of a proportion of the fish is significantly decreased by the presence of methylmercury hydroxide in their bodies.
- Subjects
FISH populations; VETERINARY toxicology; LEUCISCUS; MERCURY poisoning; LAKES; ANIMAL populations
- Publication
Oikos, 1971, Vol 22, Issue 3, p354
- ISSN
0030-1299
- Publication type
Article