Lampreys

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Lampreys

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Author : M. W. Hardisty
language : en
Publisher:
Release Date : 2006

Lampreys written by M. W. Hardisty and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Nature categories.

Although, in the recent past they may have been one of the most numerous and widespread inhabitants of our cleaner rivers, it is their mode of life that explains why they are so seldom seen by a casual observer. The chief characteristic and the one that has contributed most to their survival is that 60-80% of their entire lifespan is spent as a distinctive blind, larval stage known as the ammocoete. Even during the adult stage, this is a wholly nocturnal creature, passing its existence burrowed under the banks of mud along the sides and bottoms of rivers. Lampreys occupy a key position in our evolutionary story and can be grouped with a select number of animal species, commonly referred to as 'living fossils'; among these are the ancient king crab, the coelacanth and the lungfish. All have relatively long evolutionary histories and still show some of the primitive characteristics that are seen in similar and related fossil animals.

Biology Of The Sea Lamprey In Its Parasitic Phase

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Author : Phillip Sheridan Parker
language : en
Publisher:
Release Date : 1956

Biology Of The Sea Lamprey In Its Parasitic Phase written by Phillip Sheridan Parker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1956 with Lampreys categories.

Most of the experimental lampreys were mature and rip after 14 to 18 months of parasitic life. They exhibited signs of irreversible physical degeneration which precedes death. Three specimens were immature at 14, 18, and 26 months in aquariums, thus indicating that under certain conditions, lampreys may extend their parasitic phase.

Lampreys Biology Conservation And Control

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Author : Margaret F. Docker
language : en
Publisher: Springer
Release Date : 2014-11-24

Lampreys Biology Conservation And Control written by Margaret F. Docker and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-24 with Science categories.

The book provides the most comprehensive review of lamprey biology since Hardisty and Potter’s five-volume “The Biology of Lampreys” published more than 30 years ago. Published in two volumes, it includes contributions from international lamprey experts, reviewing and providing new insights into the evolution, general biology, and management of lampreys worldwide. This first volume offers up-to-date chapters on the systematics, general biology, conservation status, and conservation needs of lampreys. It will serve as an important reference for researchers working on any aspect of lamprey biology and fishery managers whose mandate is to control or conserve lamprey populations.

Lampreys Biology Conservation And Control

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Author : Margaret F. Docker
language : en
Publisher: Springer
Release Date : 2019-06-03

Lampreys Biology Conservation And Control written by Margaret F. Docker and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-03 with Science categories.

This book, published in two volumes, provides the most comprehensive review of lamprey biology since Hardisty and Potter’s “The Biology of Lampreys” published more than 30 years ago. This second volume offers a synthesis of topics related to the lamprey gonad (e.g., lamprey sex ratios, sex determination and sex differentiation, sexual maturation, and sex steroids), the artifical propagation of lampreys, post-metamorphic feeding and the evolution of alternative feeding and migratory types, the history and status of sea lamprey control in the Laurentian Great Lakes and Lake Champlain, and an overview of contributions of lamprey developmental studies for understanding vertebrate evolution.

Sea Lamprey

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Author : Barbara A. Somervill
language : en
Publisher: Cherry Lake
Release Date : 2008-08-01

Sea Lamprey written by Barbara A. Somervill and has been published by Cherry Lake this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-08-01 with Juvenile Nonfiction categories.

the Sea Lamprey have invades the Great Lakes where they have killed off native species and harmed the fishing industry. Find out hoe they arrived, the problems they cause and other places that are on the lookout for these animals.

The Biology Of Lampreys

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Author : M. W. Hardisty
language : en
Publisher:
Release Date : 1971

The Biology Of Lampreys written by M. W. Hardisty and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Nature categories.

Great Lakes Sea Lamprey

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Author : Cory Brant
language : en
Publisher: University of Michigan Regional
Release Date : 2019

Great Lakes Sea Lamprey written by Cory Brant and has been published by University of Michigan Regional this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with History categories.

A captivating look at an ecological terror and the cooperative effort that brought the Great Lakes back from the brink

Further Research And Control Of Sea Lampreys Of The Great Lakes Area

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Author : United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Fisheries and Wildlife Conservation
language : en
Publisher:
Release Date : 1952

Further Research And Control Of Sea Lampreys Of The Great Lakes Area written by United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Fisheries and Wildlife Conservation and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with Fishes categories.

Downstream Movement Of Lampreys And Fishes In The Carp Lake River Michigan

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Author : Vernon Calvert Applegate
language : en
Publisher:
Release Date : 1961

Downstream Movement Of Lampreys And Fishes In The Carp Lake River Michigan written by Vernon Calvert Applegate and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Carp Lake River (Mich.) categories.

An inclined-screen trap was installed on the Carp Lake River, Emmett County, Michigan, in the spring of 1948 and has been in almost continuous operation since that time. The major goal of this project--a precise determination of the length of the larval life of the sea lamprey--was not attained because of the contamination of the stream above the dam with spawning lampreys. The lampreys and other fishes collected in the trap did, however, provide extensive and valuable biological information. The present report documents much of the information, largely in tabular form, accumulated over the operating seasons, 1948-49 through 1957-58; the amount of detail has been varied according to the importance of the topic under consideration or the amount required to bring out a particular point.

Sea Lamprey Control On The Great Lakes 1953 And 1954

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Author : Leo F. Erkkila
language : en
Publisher:
Release Date : 1956

Sea Lamprey Control On The Great Lakes 1953 And 1954 written by Leo F. Erkkila and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1956 with Electricity categories.