Publication Date

1958

Document Type

Dissertation/Thesis

First Advisor

Feyerherm, Harvey A.

Degree Name

M.S. (Master of Science)

Department

Department of Biology

LCSH

Blood cells||Fishes

Abstract

In comparison to the higher vertebrates there has been little physiological work done on the lower vertebrates, especially the fishes. Most of what is written about fresh water fish is done so from the standpoint of the taxonomist and ecologist. This is probably due, in part, to the fact that fish are often difficult to collect and maintain for experimental purposes. Fish blood studies in particular are difficult for a variety of reasons. The limited blood volume, the ease with which it can become contaminated by body fluids or mucous, and the extreme rapidity with which it clots are all obstacles to critical studies. It is difficult to see how the findings of the ecologist can be of much value without knowing how these findings are related to the internal functioning of the fish. To understand and interpret accurately the findings of the ecologist a thorough knowledge of the physiology seems essential. Just as with the mammal, the over-all physiological picture of the fish can often be ascertained from an examination of blood components. Signs of disease or ill health frequently show up long before they can be noticed externally. Generally speaking, once a sign of disease or sickness in a fish can be detected externally the sickness is too well established for the fish to be helped back to permanent health. A knowledge of fish blood in health and disease should be of extreme importance to the fish culturist who deals with the hatching and rearing of fish and also to the fish biologist who deals with such things as the effects of pollutants on fish life.

Comments

Includes bibliographical references (leaf 35)

Extent

35 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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