Results 191 to 200 of about 4,700 (243)
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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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Aquaculture, 1991
Abstract We tested the null hypothesis that salmon released from a marine locality return to that area at maturity, independent of the time of release. This was done through monthly releases of individually tagged hatchery-reared smolts and seawater acclimated post-smolts for more than 1 year at a sea locality about 4 km outside the Research Station ...
Lars P. Hansen, Bror Jonsson
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Abstract We tested the null hypothesis that salmon released from a marine locality return to that area at maturity, independent of the time of release. This was done through monthly releases of individually tagged hatchery-reared smolts and seawater acclimated post-smolts for more than 1 year at a sea locality about 4 km outside the Research Station ...
Lars P. Hansen, Bror Jonsson
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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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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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Aquaculture, 1998
Growth and survival was monitored in full-sib diploid and triploid coho salmon families held at elevated temperature and accelerated photoperiod to induce them to smolt as underyearlings. At tagging, the diploids were significantly heavier than the triploids.
Ruth E Withler +3 more
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Growth and survival was monitored in full-sib diploid and triploid coho salmon families held at elevated temperature and accelerated photoperiod to induce them to smolt as underyearlings. At tagging, the diploids were significantly heavier than the triploids.
Ruth E Withler +3 more
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An alternative view of smolting in salmonids
Aquaculture, 1994Abstract The two major developmental events during post-emergence life of salmonids are maturation and smolting. Whereas maturation is obligatory for the continuation of the species, smolting is not: salmonids can mature without smolting. Therefore, developmentally, smolting is subsidiary to maturation. Considered in the wider context of reproduction,
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Aquaculture, 1994
Atlantic salmon which had been released as fry in tributaries of the Connecticut River (Northeastern USA) were captured during the migratory period (9 May to 6 June) 1 to 2 years later. Migrants (smolts) were captured above a dam on the main-stem; non-migrants (parr) were captured in two tributaries. Migrants were significantly larger than non-migrants
McCormick, S D, Bjornsson, B T
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Atlantic salmon which had been released as fry in tributaries of the Connecticut River (Northeastern USA) were captured during the migratory period (9 May to 6 June) 1 to 2 years later. Migrants (smolts) were captured above a dam on the main-stem; non-migrants (parr) were captured in two tributaries. Migrants were significantly larger than non-migrants
McCormick, S D, Bjornsson, B T
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River Research and Applications, 2019
AbstractThe survival rates of three groups of seaward‐migrating Salmo salar smolts were investigated in 2005, 2016, and 2017 in the River Skjern and River Omme, as well as in the Ringkøbing Fjord using acoustic telemetry. Ringkøbing Fjord extends for approximately 300 km2, and has a narrow, regulated outlet to the sea. Smolts of three different origins:
Hugo Flávio +3 more
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AbstractThe survival rates of three groups of seaward‐migrating Salmo salar smolts were investigated in 2005, 2016, and 2017 in the River Skjern and River Omme, as well as in the Ringkøbing Fjord using acoustic telemetry. Ringkøbing Fjord extends for approximately 300 km2, and has a narrow, regulated outlet to the sea. Smolts of three different origins:
Hugo Flávio +3 more
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Aquaculture, 2007
Abstract In order to elucidate the developmental basis for smolting, Atlantic salmon, Salmo salar, parr ( 12.5 cm) were exposed to natural daylength (LDN) and increased daylength (LD16:8) starting in late February and gill Na+,K+–ATPase activity and circulating hormone levels monitored from January to May.
Stephen D. McCormick +3 more
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Abstract In order to elucidate the developmental basis for smolting, Atlantic salmon, Salmo salar, parr ( 12.5 cm) were exposed to natural daylength (LDN) and increased daylength (LD16:8) starting in late February and gill Na+,K+–ATPase activity and circulating hormone levels monitored from January to May.
Stephen D. McCormick +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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