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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

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BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

How do marine and freshwater teleosts differ in water, salt, and nitrogenous-waste regulation?

Summary Introduction

To review:

The differences in water, salt, and nitrogenous-waste regulation in marine and freshwater teleost.

Introduction:

The teleost fishes are found in both marine (seawater) and fresh water environment. The environment of seawater and freshwater is different and thus, the teleost living in these two different environments have certain adaptations to survive accordingly.

Explanation

The difference in water, salt, and nitrogenous waste regulation in marine and freshwater teleost is given in the table below:

Marine water teleost Freshwater teleost
The seawater is hypertonic and thus, the water is moved out of the body tissues of teleost osmotically. The freshwater is hypotonic and thus the water moves in the tissues osmotically.
The teleost drinks more water and excrete very low amount of urine. The teleost drink rarely water and produce very large amount of dilute urine...

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