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Author: Max Carl Wilhelm Weber
Publisher: Brill Archive
ISBN:
Category : Fishes
Languages : en
Pages : 434
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Book Description
Author: Max Carl Wilhelm Weber
Publisher: Brill Archive
ISBN:
Category : Fishes
Languages : en
Pages : 434
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Book Description
Author: Max Carl Wilhelm Weber, Lieven Ferdinand de Beaufort
Publisher: Brill Archive
ISBN:
Category :
Languages : en
Pages : 440
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Book Description
Author: Max Weber
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 536
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Book Description
Author: Walter J. Rainboth
Publisher: Food & Agriculture Org.
ISBN: 9789251037430
Category : Business & Economics
Languages : en
Pages : 340
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Book Description
This field guide covers the major resource groups likely to be encountered in the fisheries of the Cambodian Mekong. These groups include sharks, batoid fishes and bony fishes. The introduction outlines the geographical, environmental and ecological factors influencing fisheries, and the basic components of the fisheries of the Cambodian Mekong. As an aid to identification to higher taxonomic levels, a pictorial index to families and an illustrated guide to orders and families are included. Each species account provides scientific nomenclature, FAO names in English, local names, sizes, notes on fisheries, habitat and biology, and one or more illustrations. The guide is fully indexed and a list of related literature is appended. Finally, 27 colour plates are presented.
Author: Tim M. Berra
Publisher: Academic Press
ISBN: 0080532012
Category : Science
Languages : en
Pages : 647
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Book Description
This book clearly identifies nearly 170 families of fishes through the use of high-quality illustrations and includes an accurate account of selected members of that particular fish family, as well as a distribution map and accompanying commentary on classification, distribution, and diversity.Key Features* High-quality illustrations of representatives from each family* Distribution map provided for each family* Commentary for each family
Author: Yu.G. Aleyev
Publisher: Springer Science & Business Media
ISBN: 9401013241
Category : Science
Languages : en
Pages : 430
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Book Description
1. Nekton as an ecomorphological type of biont The term nekton was suggested and used for the first time in 1890 by E. Haeckel in his book Plankton-Studien. Etymologically the word nekton derives from the Greek VTJKTTJP, i.e. swimming. As Haeckel defined it, nekton describes collectively all swimming animals that are 'free to choose their path', i.e. can resist a strong current of water and, distinct from planktonic animals, go where they wish. While giving a general idea of the dividing line between plankton and nekton, Haeckel's definition, which has played an important role in shaping our ideas about nekton, today no longer provides a sufficient basis for ecological and functional morphological investigations, since it affords no possibility of quantitatively assessing either the boundary between plankton and nekton or that between nekton and other ecomorphological types of biont. Thus Parin (1968), proceeding from Haeckel's principle, believes that in the epipelagic zone of the ocean the minimum size of nektonic fishes with a well-developed capacity for active swimming may be between 15 and 30 cm, as fishes shorter than 15 cm are unable to counter oceanic currents. Meanwhile young Leucaspius (Leucaspius delineatus) only 1.5 cm long, observed by this writer in ponds near Moscow proved capable of active horizontal migrations across the entire body of water, which, if Haeckel's definition is accepted, brings the border between planktonic and nektonic fish in this case to between 1.5 and 2.0 cm.
Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category :
Languages : en
Pages : 1424
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Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 1160
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Book Description
Author: United States. Bureau of Sport Fisheries and Wildlife
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 992
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Book Description
Author: Albert William Herre
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 984
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Book Description
A checklist of Philippine fishes was prepared for the Philippine Fishery Program of the Fish and Wildlife Service to provide a knowledge of the kinds of fishes that comprise the fish fauna of Philippines to serve as a basis for their conservation and management. Each entry includes the source from which it was taken.
