Gas-bubble Disease of Salmonids
Gas-bubble Disease of Salmonids

Author: Robert R. Rucker

Publisher:

Published: 1972

Total Pages: 12

ISBN-13:

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Fish maintained in water supersaturated with air reach equilibrium with gases dissolved in water. These gases in the fish tend to equilibrate to the atmosphere the same as the gases in the water. Gas-bubble disease is characterized by bubbles under the skin, in the fins, tail, mouth, behind the eyeballs, and in the vascular system. Carbon dioxide does not cause gas bubble disease. Oxygen can cause gas-bubble disease at about 350 percent air saturation, but nitrogen can cause the disease even below 118 percent air saturation. Excess gas in water can be produced by pressure, increase in temperature, and biotic metabolism, and can be reduced by exposure to air. Saturation tables for atmospheric oxygen and nitrogen in water for 0 degrees to 30 degrees centigrade are presented.

The Behavior of Fish and Other Aquatic Animals
The Behavior of Fish and Other Aquatic Animals

Author: David Mostofsky

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 408

ISBN-13: 0323151736

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The Behavior of Fish and Other Aquatic Animals provides a comprehensive discussion of the behavior of fish and other aquatic animals. It aims to fulfill the need for published materials that can responsibly depict the status quo of existing knowledge, and that can serve to educate the scientist seeking an organized presentation focused on biobehavioral issues and techniques. The book begins by exploring symbiotic relationships in fishes that range from broad multispecific types that have little or no intimacy between symbionts to intimate mutualistic relationships. It then presents studies on the feasibility of using teleost fish as subjects in behavioral toxicology experiments; the visual behavior of fishes; the role of the teleost telencephalon in behavior; and the auditory systems of fishes. The remaining chapters cover the behavior of turtles in land, sea, and fresh waters; visually guided behavior in turtles; the gas bubble disease of fish; and the advantages and limitations of acoustic telemetry, which has been used to obtain data from animals ranging in size from hatchling sea turtles to large tuna and sharks.