Author: Ingemar BerglundPublisher:
ISBN: 9789157645159
Category : Atlantic salmon
Languages : en
Pages : 30
Book Description
Sexual Maturation and Smoltification in Baltic Salmon (Salmo Salar)
Author: Ingemar BerglundPublisher:
ISBN: 9789157645159
Category : Atlantic salmon
Languages : en
Pages : 30
Book Description
Smoltification and Early Sexual Maturation in the Baltic Salmon, Salmo Salar L.
Author: Magnus RydevikPublisher:
ISBN:
Category : Atlantic salmon
Languages : en
Pages : 92
Book Description
Precocious Sexual Maturation and Smolting in Baltic Salmon (Salmo Salar L.)
Author: Hans LundqvistPublisher:
ISBN: 9789171741318
Category : Atlantic salmon
Languages : en
Pages : 42
Book Description
Parr-smolt Transformation in Nonanadromous Atlantic Salmon Salmo Salar and Effects of Sexual Maturation on the Parr-smolt Transformation in Male Anadromous Atlantic Salmon
Author: Timothy Peter BirtPublisher:
ISBN:
Category : Atlantic salmon
Languages : en
Pages : 154
Book Description
Sexual Maturation in Atlantic Salmon, Salmo Salar L. ; Aspects of Environmental and Hormonal Control
Author: Geir Lasse TarangerThe Effect of Extended Day Length on Early Sexual Maturation and Growth in Atlantic Salmon Salmo Salar Reared in Sea Cages
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 14
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).
Physiological Changes Associated with the Diadromous Migration of Salmonids
Author: Helga Rachel HøgåsenPublisher: NRC Research Press
ISBN: 9780660176376
Category : Nature
Languages : en
Pages : 142
Book Description
This volume presents and discusses present knowledge concerning the diadromous migration of salmonids. It groups elements ranging from ecology to cell biology, to provide the reader background knowledge for critical understanding of published literature and for design of experiments.
Growth, Respiration, and Sexual Maturation of Juvenile Atlantic Salmon (Salmo Salar L.)
Author: Robert Louis BlakePublisher:
ISBN:
Category : Atlantic salmon
Languages : en
Pages : 354
Book Description
Ecology of Atlantic Salmon and Brown Trout
Author: Bror JonssonPublisher: Springer Science & Business Media
ISBN: 9400711891
Category : Science
Languages : en
Pages : 720
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: