Smoltification and Early Sexual Maturation in the Baltic Salmon, Salmo Salar L. PDF Download

Author: Magnus Rydevik
Publisher:
ISBN:
Category : Atlantic salmon
Languages : en
Pages : 92

View

Book Description

Author: Hans Lundqvist
Publisher:
ISBN: 9789171741318
Category : Atlantic salmon
Languages : en
Pages : 42

View

Book Description

Author: Ingemar Berglund
Publisher:
ISBN: 9789157645159
Category : Atlantic salmon
Languages : en
Pages : 30

View

Book Description

Author: Angus D. Munro
Publisher: CRC Press
ISBN: 1000722457
Category : Science
Languages : en
Pages : 270

View

Book Description
This important publication provides, for the first time, a comprehensive review of knowledge of reproductive seasonality in teleosts. It addresses why a particular species should show such seasonality, and how environmental cues act as regulators to ensure that reproductive maturation and breeding occur at the optimum time. The book considers the ultimate factors responsible for the evolution of reproductive seasonality in fish. It reviews salient concepts of reproductive seasonality in mammals. This volume also includes a review of accumulated knowledge of the control mechanisms of salmonids, gasterosteids, temperate cyprinids, cyprinodonts and other brackish-water forms, and marine and tropical freshwater teleosts. This is a work of value to research scientists in the field of environmental physiology, reproductive biology, and comparative neuroendocrinology and endocrinology. In addition, it is relevant for institutions involved with aquaculture and fisheries management. It is useful for post-graduate as well as undergraduate courses in fish biology and various related subjects.

Author: Bror Jonsson
Publisher: Springer Science & Business Media
ISBN: 9400711891
Category : Science
Languages : en
Pages : 720

View

Book Description
Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in morphology, ecology, behaviour, physiology and genetics. Here, the authors present the population ecology of Atlantic salmon and brown trout and how it is influenced by the environment in terms of growth, migration, spawning and recruitment. Salmonids appeared as freshwater fish some 50 million years ago. Atlantic salmon and brown trout evolved in the Atlantic basin, Atlantic salmon in North America and Europe, brown trout in Europe, Northern Africa and Western Asia. The species live in small streams as well as large rivers, lakes, estuaries, coastal seas and oceans, with brown trout better adapted to small streams and less well adapted to feeding in the ocean than Atlantic salmon. Smolt and adult sizes and longevity are constrained by habitat conditions of populations spawning in small streams. Feeding, wintering and spawning opportunities influence migratory versus resident lifestyles, while the growth rate influences egg size and number, age at maturity, reproductive success and longevity. Further, early experiences influence later performance. For instance, juvenile behaviour influences adult homing, competition for spawning habitat, partner finding and predator avoidance. The abundance of wild Atlantic salmon populations has declined in recent years; climate change and escaped farmed salmon are major threats. The climate influences through changes in temperature and flow, while escaped farmed salmon do so through ecological competition, interbreeding and the spreading of contagious diseases. The authors pinpoint essential problems and offer suggestions as to how they can be reduced. In this context, population enhancement, habitat restoration and management are also discussed. The text closes with a presentation of what the authors view as major scientific challenges in ecological research on these species.

Author:
Publisher:
ISBN:
Category : Aquatic sciences
Languages : en
Pages : 804

View

Book Description

Author: K. Müller
Publisher: Springer Science & Business Media
ISBN: 9789061930983
Category : Science
Languages : en
Pages : 486

View

Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 14

View

Book Description
Two year-classes of Atlantic salmon, represented by a line selected for growth performance and a control line in one year-class and an unselected control line from a similar gene pool in a second year-class, were reared in sea cages. The fish were used to evaluate the effects of extended day length, using artificial light from fluorescent tubes, on growth and sexual maturity as grilse (maturation after one sea-year).

Author:
Publisher:
ISBN:
Category : Zoology
Languages : en
Pages : 452

View

Book Description

Author: Tomislav Vladić
Publisher: CRC Press
ISBN: 1466598514
Category : Nature
Languages : en
Pages : 295

View

Book Description
Atlantic salmon (Salmo salar, L) is an anadromous species contributing to major fishery catches and comprising a significant part of the aquaculturally produced fish for human consumption. The aim of this book is to incite the interest in the field of knowledge gathered from a broad scope of disciplines that have investigated this fish species. Und