Results 171 to 180 of about 15,113 (211)
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Aquaculture, 2002
Abstract The main objective of this study has been to investigate the effect of salinity acclimation on parr–smolt transformation and post-smolt performance in off-season Atlantic salmon smolts ( Salmo salar L.). Four groups of potential off-season salmon smolts were raised under a phase advanced simulated natural photoperiod between 26 July and 14 ...
S.O Handeland, S.O Stefansson
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Abstract The main objective of this study has been to investigate the effect of salinity acclimation on parr–smolt transformation and post-smolt performance in off-season Atlantic salmon smolts ( Salmo salar L.). Four groups of potential off-season salmon smolts were raised under a phase advanced simulated natural photoperiod between 26 July and 14 ...
S.O Handeland, S.O Stefansson
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2011
This chapter describes important elements of the parr-smolt transformation (smolting) in Atlantic salmon and brown trout. Smolting is a preparatory physiological adaptation, which occurs in spring prior to the seaward migration. It includes morphological transformation, and changes in salinity tolerance, visual pigments, buoyancy, metabolism and ...
Bror Jonsson, Nina Jonsson
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This chapter describes important elements of the parr-smolt transformation (smolting) in Atlantic salmon and brown trout. Smolting is a preparatory physiological adaptation, which occurs in spring prior to the seaward migration. It includes morphological transformation, and changes in salinity tolerance, visual pigments, buoyancy, metabolism and ...
Bror Jonsson, Nina Jonsson
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Environmental Biology of Fishes, 2011
Migration theory states that migration behavioural strategies should be optimised to maximise fitness. Many studies have shown that in downstream migrating Atlantic salmon Salmo salar L. smolts, mortality from predation is high and negatively size dependent.
Anton T. Ibbotson +2 more
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Migration theory states that migration behavioural strategies should be optimised to maximise fitness. Many studies have shown that in downstream migrating Atlantic salmon Salmo salar L. smolts, mortality from predation is high and negatively size dependent.
Anton T. Ibbotson +2 more
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Salt and Water Balance in Salmon Smolts
Journal of Experimental Biology, 1970ABSTRACT Salmon smolts adapted to sea water maintain a high rate of turnover of both sodium and chloride, but when adapted to fresh water the rate of turnover is low. Only a small part of the influx takes place through the gut. On immediate transfer from sea water to dilute sea water or to fresh water the influxes decline rapidly, but on
W T, Potts, M A, Foster, J W, Stather
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Do trout farm effluents affect Atlantic salmon smolts? Preliminary studies using caged salmon smolts
Aquaculture, 2012Although many studies have shown that trout farm effluents can affect water quality and macro-invertebrate populations downstream of the farm, few studies have investigated effects on fish. Previous work has suggested that trout farm effluents can affect salmonid parr and embryos but there is no data as to whether they affect salmonid smolts.
Waring, C.P. +4 more
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First the seed, next the smolt?
British Food Journal, 2016Purpose The purpose of this paper is to investigate the impact of biotechnological inventions and innovations on the organization of the burgeoning Atlantic salmon farming industry. Design/methodology/approach The authors study how novel biotechnological inventions are utilized within Atlantic salmon aquaculture.
Svein Ole Borgen, Bernt Aarset
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Retinal projections in sockeye salmon smolts (Oncorhynchus nerka)
Cell and Tissue Research, 1988The retinal projections in 2-year-old salmon smolt (Oncorhynchus nerka) are significantly different from those observed in other teleosts examined to date in that the projections are more extensive. Very noticeable are extensive projections to most of the dorsal thalamus, to all layers of the optic tectum, and into the periaqueductal gray of the torus ...
S O, Ebbesson +3 more
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A simple electronic smolt counter
Journal of Fish Biology, 1972The development of methods for the automatic counting of migratory fish has become a matter of some importance in the United Kingdom and elsewhere, owing to the increasing concern over the lack of accurate information about fish stocks. An instrument capable of counting fish accurately and reliably in a variety of conditions remains a goal towards ...
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Aquaculture, 2012
Abstract We have examined physiological parameters associated with seawater adaptability, growth and energetics, as well as major endocrine regulators of these processes in wild migrating Atlantic salmon smolts and post-smolts from the river through the fjord, coastal areas and the open ocean.
Sigurd O. Stefansson +7 more
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Abstract We have examined physiological parameters associated with seawater adaptability, growth and energetics, as well as major endocrine regulators of these processes in wild migrating Atlantic salmon smolts and post-smolts from the river through the fjord, coastal areas and the open ocean.
Sigurd O. Stefansson +7 more
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Mark-Recapture Estimation of a Salmon Smolt Population
Biometrics, 1994A mark-recapture experiment was conducted applying a two-sample stratified technique to estimate the number of Atlantic salmon smolts, Salmo salar, migrating out of the Conne River, Newfoundland. We developed a model where parameters are introduced to describe the mean time for the salmon to migrate between the release site and recapture site and to ...
C J, Schwarz, J B, Dempson
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