Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Björn Th. Björnsson"'
Autor:
Björn Th. Björnsson, Björn Thrandur Björnsson, Tómas Árnason, Bergljót Magnadóttir, Agnar Steinarsson
Publikováno v:
Aquaculture. :70-79
The effects of salinity and temperature on growth, plasma ions, cortisol and immune parameters were investigated in two experiments. In the first experiment small, medium and large juvenile Atlantic cod Gadus morhua (initial average weights of 1.9, 8
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e87a3afd712ff3590197b89e19018a3
https://doi.org/10.1016/j.aquaculture.2012.11.036
https://doi.org/10.1016/j.aquaculture.2012.11.036
Autor:
Björn Th. Björnsson, E.Å. Bendiksen, Ørjan Hagen, Christel Solberg, Chris André Johnsen, Elisabeth Jönsson, S.J.S. Johansen
Publikováno v:
Aquaculture Nutrition. 19:15-34
Growth performance, muscle cellularity, flesh quality, and plasma ghrelin were investigated in 0+ and 1+ farmed Atlantic salmon (Salmo salar L.) from 40 g to 4.3 kg. Reduced meal frequency was introduced in both smolt groups from ~1.5 kg; one meal pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13a0ceb0fd19e3b31ecba9bc54105794
https://doi.org/10.1111/j.1365-2095.2011.00927.x
https://doi.org/10.1111/j.1365-2095.2011.00927.x
Publikováno v:
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology. 151:698-704
To elucidate possible mechanisms behind the endocrine control of parr-smolt transformation, the daily plasma profiles in thyroid hormones (TH; free thyroxine (FT(4)), total thyroxine (TT(4)), and total 3,5,3'-triiodothyronine (TT(3))), growth hormone
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42823e71aaa201f45d10dfb0c91f4f4e
https://doi.org/10.1016/j.cbpa.2008.08.017
https://doi.org/10.1016/j.cbpa.2008.08.017
Autor:
Sigurd O. Stefansson, Tom Ole Nilsen, Steffen S. Madsen, Pia Kiilerich, Lars O.E. Ebbesson, Björn Th. Björnsson, Stephen D. McCormick
Publikováno v:
Nilsen, T O, Ebbesson, L O E, Kiilerich, P, Björnsson, B T, Madsen, S S, McCormick, S D & Stefansson, S O 2008, ' Endocrine systems in juvenile anadromous and landlocked Atlantic salmon (Salmo salar): Seasonal development and seawater acclimation. ', General and Comparative Endocrinology, vol. 155, no. 3, pp. 762-772 . https://doi.org/10.1016/j.ygcen.2007.08.006
Udgivelsesdato: 2008-Feb-1 The present study compares developmental changes in plasma levels of growth hormone (GH), insulin-like growth factor I (IGF-I) and cortisol, and mRNA levels of their receptors and the prolactin receptor (PRLR) in the gill o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1cfbc6f33ab1b822d0e29f4899fa09e
https://doi.org/10.1016/j.ygcen.2007.08.006
https://doi.org/10.1016/j.ygcen.2007.08.006
Autor:
Steffen S. Madsen, Tom Ole Nilsen, Anna Wargelius, Stephen D. McCormick, Sigurd O. Stefansson, Lars O.E. Ebbesson, Björn Th. Björnsson
Publikováno v:
Steffansson, S O E, Nielsen, T O, Ebbesson, L O E, Wargelius, A, Madsen, S, Björnsson, B T & McCormick, S D 2007, ' Molecular mechanisms of continuous light inhibition of Atlantic salmon parr-smolt transformation ', Aquaculture, vol. 273, no. 2-3, pp. 235-245 . https://doi.org/10.1016/j.aquaculture.2007.10.005
Atlantic salmon (Salmo salar) rely on changes in photoperiod for the synchronization of the developmental events constituting the parr-smolt transformation. In the absence of photoperiod cues, parr-smolt transformation is incomplete, and such 'pseudo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39378b9adb6fa49c437e9437eb9585be
https://doi.org/10.1016/j.aquaculture.2007.10.005
https://doi.org/10.1016/j.aquaculture.2007.10.005
Publikováno v:
Fish Physiology and Biochemistry. 22:45-50
Free plasma thyroxine (FT4) levels were measured in coho salmon, Oncorhynchus kisutch, during parr-smolt transformation (smoltification) using an equilibrium dialysis system followed by a radioimmunoassay. The FT4 data were correlated to total plasma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::176f4ea3bea3356b40a0d3634fe8ef4e
https://doi.org/10.1023/a:1007841517552
https://doi.org/10.1023/a:1007841517552
Publikováno v:
Aquaculture. 167:53-65
Morphological changes during parr-smolt transformation are generally less apparent in hatchery-reared than wild salmonids. The aim of the present study was to investigate possible differences between wild and hatchery-reared brown trout in regard to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e663221a40ee3b47f8f41341a562395d
https://doi.org/10.1016/s0044-8486(98)00280-4
https://doi.org/10.1016/s0044-8486(98)00280-4
Publikováno v:
Hormones and Behavior. 30:13-21
This study addressed three questions concerning interactions between physiology and dominance in juvenile rainbow trout: (1) the validity of a model predicting a time-dependent effect of fasting on competitive ability (i.e., the ability to obtain con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dce82dc51b7d0fcafc0410de40ca2b25
https://doi.org/10.1006/hbeh.1996.0003
https://doi.org/10.1006/hbeh.1996.0003
Publikováno v:
Fish Physiology and Biochemistry. 13:379-386
Juvenile rainbow trout, Oncorhynchus mykiss, were injected with estradiol-17β (E2) in order to study the source of extra calcium needed during vitellogenesis. E2-treatment increased the calcium uptake from the external medium as well as calcium mobi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32a3efd9e1caa5866ad7b78ab2da985e
https://doi.org/10.1007/bf00003417
https://doi.org/10.1007/bf00003417