Results 91 to 100 of about 56,917 (254)

Reproductive Cycle in Salmo Salar Linn [PDF]

Nature, 1939
IT is known that in Salmo salar Linn. there occurs regularly a very small percentage, possibly of the order of 0·1 per cent, of mature female fish in which discharge of ova may be delayed or does not take place. Such fish are found many months after the normal spawning time heavy with ripe ova. In certain parts of Scotland they are termed ‘baggots’ or ‘
openaire   +1 more source

Transcriptomic profiling of gill biopsies to define predictive markers for seawater survival in farmed Atlantic salmon

Journal of Fish Biology, EarlyView.
Abstract Wild Atlantic salmon migrate to sea following completion of a developmental process known as parr‐smolt transformation (PST), which establishes a seawater (SW) tolerant phenotype. Effective imitation of this aspect of anadromous life history is a crucial aspect of commercial salmon production, with current industry practice being marred by ...
Lars Grønvold, Mattis J. van Dalum, Anja Striberny, Domniki Manousi, Trine Ytrestøyl, Turid Mørkøre, Solomon Boison, Bjarne Gjerde, Even Jørgensen, Simen R. Sandve, David G. Hazlerigg   +10 more
wiley   +1 more source

Body size of male Atlantic salmon (Salmo salar L.) at introduction of a 5‐week LD12:12 winter signal influences their decision to mature early or smoltify

Journal of Fish Biology, EarlyView.
Abstract Sexual maturation of male Atlantic salmon post‐smolts (‘jacking’) is undesired in aquaculture and seems to occur due to the intensification in modern facilities. Maturation depends on internal and external factors (temperature, photoperiod, feed availability, energy levels, body size, genetic background) that act on the brain‐pituitary‐gonad ...
Enrique Pino‐Martinez, Kristine F. Staveland, Mitchell S. Fleming, Pablo Balseiro, Cindy Pedrosa, Sigurd O. Handeland   +5 more
wiley   +1 more source

Effects of organic plant oils and role of oxidation on nutrient utilization in juvenile rainbow trout (Oncorhynchus mykiss) [PDF]

, 2012
The study compared the effect of four either fresh or force oxidized organic plant oils in diets for juvenile rainbow trout (Oncorhynchus mykiss) in which 47% of conventional LT fish meal protein was substituted by a mixture of 3 organic plant protein ...
A. Jokumsen, Bell, Bligh, Bransden, Børsting, C. Jacobsen, Caballero, Dalsgaard, Fountoulaki, Geurden, Geurden, I. Lund, J. Dalsgaard, J. Holm, J.H. Hansen, Jobling, Kaitaranta, Kasumyan, Kolar, Koshio, Laohabanjong, Lund, Lund, Lutterodt, Menoyo, Mente, Ng, Peng, Petersen, Petterson, Pickova, Ping, Shahidi, Shantha, Singh, Sun-Waterhouse, Takeda, Tyl   +37 more
core   +1 more source

The physiological response of juvenile diploid and triploid Arctic charr Salvelinus alpinus to exhaustive exercise

Journal of Fish Biology, EarlyView.
Abstract Triploidy is an effective tool for producing sterile fishes but often results in impaired performance in commercial aquaculture. In light of this, our study compared the physiological response to exhaustive exercise in juvenile diploid and triploid Arctic charr Salvelinus alpinus, a polar species with great potential for aquaculture.
John D. Clark, Tillmann J. Benfey
wiley   +1 more source

Integrative testis transcriptome analysis reveals differentially expressed miRNAs and their mRNA targets during early puberty in Atlantic salmon

BMC Genomics, 2017
Background Our understanding of the molecular mechanisms implementing pubertal maturation of the testis in vertebrates is incomplete. This topic is relevant in Atlantic salmon aquaculture, since precocious male puberty negatively impacts animal welfare ...
K. O. Skaftnesmo, R. B. Edvardsen, T. Furmanek, D. Crespo, E. Andersson, L. Kleppe, G. L. Taranger, J. Bogerd, R. W. Schulz, A. Wargelius   +9 more
doaj   +1 more source

Saprolegnia parasitica S1 and S2 Strains Differ in Zoospore Transition Timing and Pathogenicity Against Juvenile Atlantic Salmon (Salmo salar). [PDF]

J Fish Dis
ABSTRACT S1 and S2 strains of S. parasitica are both common among diseased farmed salmonids in Nova Scotia, whereas globally S1 is rare and S2 is common. Following the initiation of asexual maturation and overnight incubation at 20°C then harvest, and incubation at 10°C in vitro, S2 secondary zoospores mostly transformed into cysts within 3 h, and by 6 
Duston J, Nasif Sarowar M, Schmidt-Schaun T, Astatkie T.   +3 more
europepmc   +2 more sources

Expression of corticoid‐regulatory genes in the gills of Atlantic salmon (Salmo salar) parr and smolt and during salinity acclimation

Journal of Fish Biology, EarlyView.
Abstract In teleost fishes, cortisol is the major corticoid and has both glucocorticoid and mineralocorticoid actions. However, how fish tissues discriminate between these distinct corticosteroid actions is unclear. In mammals, the major factors responsible for intracellular corticosteroid regulation are glucocorticoid receptors (grs) and the ...
Makoto Kusakabe, Takashi Yada, Graham Young, Amy M. Regish, Stephen D. McCormick   +4 more
wiley   +1 more source

Changes in epidemiological patterns of sea lice infestation on farmed Atlantic salmon, Salmo salar L., in Scotland between 1996 and 2006 [PDF]

, 2008
Analyses of a unique database containing sea lice records over an 11 year period provide evidence of changing infestation patterns in Scotland. The data, collected from more than 50 commercial Atlantic salmon farms, indicate that both species of sea lice
Bron J.E., Grant A.N., ICES, Johnson S.C., Kabata Z., Revie C.W., Roth M., Scottish Executive, Shaw D.J., SSPO, Treasurer J., Treasurer J.W., Wadsworth S.L, Wootten R.   +13 more
core   +1 more source

Sequence capture analysis determines spatial and temporal stock contributions to a mixed coastal anadromous fishery

Journal of Fish Biology, EarlyView.
Abstract Employing a citizen science model of partnerships with recreational and commercial fishers, we collected 5298 fin‐clip samples of striped bass Morone saxatilis over a 2‐year period and a broad geographic area that encompassed a majority of the species migratory range.
Kristopher J. Wojtusik, David L. Berlinsky, Linas W. Kenter, Adrienne I. Kovach   +3 more
wiley   +1 more source