Freshwater fish ecology / Herry Kenyes.

By:

Kenyes., Herry [author.]

Material type: Text

TextPublisher: Delhi, India : Amiga Press Inc., 2021 ; Reprint 2024Description: vi, 214 pages ; 24 cmContent type:

text

Media type:

unmediated

Carrier type:

volume

ISBN:

9789390012220

Subject(s):

DDC classification:

639.2 K422f

LOC classification:

SH331

Contents:

Fish ecosystem -- Fish parasite -- Freshwater fish diseases and disorders -- Freshwater fish culture -- Pathogens in marine and freshwater environments.

Summary: "Freshwater fisheries are the most heavily exploited aquatic resources, producing about a quarter of the world's food fish from less than 0.01 per cent of the world's water resources. Freshwater fish are those that spend some or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05% These environments differ from marine conditions in many ways, the most obvious being the difference in levels of salinity. To survive fresh water, the fish need a range of physiological adaptations. Freshwater fish differ physiologically from salt water fish in several respects. Their gills must be able to diffuse dissolved gasses while keeping the salts in the body fluids inside. Their scales reduce water diffusion through the skin: freshwater fish that have lost too many scales will die. They also have well developed kidneys to reclaim salts from body fluids before excretion. Fishes live in a world that is unfamiliar to us. Although we may make or even more advanced brief visits to this other world using a snorkel, scuba diving equipment, we can never become a part of it. Yet, an understanding of fish ecology requires an awareness of the relationships between fishes and their environment. The fish farmers and fish& fisheries students too can benefit from this book." -- Back cover

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Holdings
Item type	Current library	Shelving location	Call number	Copy number	Status	Date due	Barcode
Books	Main Library	Circulation Section	CIR 639.2 K422f 2021 (Browse shelf(Opens below))	1-1	Available		030511

Includes bibliographical references and index

Fish ecosystem -- Fish parasite -- Freshwater fish diseases and disorders -- Freshwater fish culture -- Pathogens in marine and freshwater environments.

"Freshwater fisheries are the most heavily exploited aquatic resources, producing about a quarter of the world's food fish from less than 0.01 per cent of the world's water resources. Freshwater fish are those that spend some or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05% These environments differ from marine conditions in many ways, the most obvious being the difference in levels of salinity. To survive fresh water, the fish need a range of physiological adaptations. Freshwater fish differ physiologically from salt water fish in several respects. Their gills must be able to diffuse dissolved gasses while keeping the salts in the body fluids inside. Their scales reduce water diffusion through the skin: freshwater fish that have lost too many scales will die. They also have well developed kidneys to reclaim salts from body fluids before excretion. Fishes live in a world that is unfamiliar to us. Although we may make or even more advanced brief visits to this other world using a snorkel, scuba diving equipment, we can never become a part of it. Yet, an understanding of fish ecology requires an awareness of the relationships between fishes and their environment. The fish farmers and fish& fisheries students too can benefit from this book." -- Back cover

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