+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Seawater adaptability and hormone levels in growth-enhanced transgenic coho salmon, Oncorhynchus kisutch

, : Seawater adaptability and hormone levels in growth-enhanced transgenic coho salmon, Oncorhynchus kisutch. Aquaculture 191(4): 367-385, 5 December

Transgenic coho salmon containing a growth hormone (GH) gene construct have been examined for their hormone levels and ability to osmoregulate in sea water. Relative to their smaller nontransgenic siblings (age controls), GH-transgenic coho precociously develop external phenotypes and hypo-osmoregulatory ability typical of smolts. Specific growth rates of the transgenic coho were approximately 2.7-fold higher than older nontransgenic animals of similar size, and 1.7-fold higher than their nontransgenic siblings. GH levels were increased dramatically (19.3- to 32.1-fold) relative to size control salmon, but IGF-I levels were only modestly affected, being slightly enhanced in one experiment and slightly reduced in another. Insulin levels in transgenic animals did not differ from size controls, but were higher than nontransgenic siblings, and thyroxine levels in transgenic animals were intermediate between levels found in size and age controls. The homeostatic controls of, and interactions among, these hormones are discussed with respect to their effects on growth and osmoregulation.


DOI: 10.1016/s0044-8486(00)00484-1

Other references

Liu, L.; Cooper, T.; Howley, P.M.; Hayball, J.D., 2014: From crescent to mature virion: vaccinia virus assembly and maturation. Vaccinia virus (VACV) has achieved unprecedented success as a live viral vaccine for smallpox which mitigated eradication of the disease. Vaccinia virus has a complex virion morphology and recent advances have been made to answer some of the key o...

Lensky, Y.; Slabezki, Y., 1981: The inhibiting effect of the queen bee (Apis mellifera L.) foot-print pheromone on the construction of swarming queen cups. Experiments were conducted to determine the role of population density of queenright honey bee colonies, and that of the queen bee pheromonal secretions, on the induction and inhibition of swarming queen cup construction during swarming and nonswa...

Shoffner, J.M., 2000: Mitochondrial myopathy diagnosis. Oxidative phosphorylation (OXPHOS) accounts for approximately 95% of the adenosine triphosphate (ATP) produced by the cell. The central nervous system, peripheral nervous system, cardiac muscle, skeletal muscle, and smooth muscle are highly suscep...

Montaño, M.D.; Olesik, J.W.; Barber, A.G.; Challis, K.; Ranville, J.F., 2016: Single Particle ICP-MS: Advances toward routine analysis of nanomaterials. From its early beginnings in characterizing aerosol particles to its recent applications for investigating natural waters and waste streams, single particle inductively coupled plasma-mass spectrometry (spICP-MS) has proven to be a powerful techni...

Schulz, G., 1972: Medical legislation in literature 1971. 2. Medizinische Klinik 67(41): 1342-1346

Konrad, C.; Henningsen, H.; Jansen, A.; Knecht, S., 2005: Comparing brain activation across groups with different motor abilities. This study was undertaken to investigate a useful image blurring index. This work is based on our previously developed method, the Moran peak ratio. Medical images are often deteriorated by noise or blurring. Image processing techniques are used t...

Gingnell, M.; Engman, J.; Frick, A.; Moby, L.; Wikström, J.; Fredrikson, M.; Sundström-Poromaa, I., 2014: Oral contraceptive use changes brain activity and mood in women with previous negative affect on the pill--a double-blinded, placebo-controlled randomized trial of a levonorgestrel-containing combined oral contraceptive. Most women on combined oral contraceptives (COC) report high levels of satisfaction, but 4 10% complain of adverse mood effects. The aim of this randomized, double-blinded, placebo-controlled trial was to investigate if COC use would induce more p...

Gudmundsson, G., 2012: The United Nations and non-communicable diseases. Laeknabladid 97(11): 589-589

Herbage, D.; Buffevant, C., 1974: Collagen extraction from bovine articular cartilage. Biochimie 56(5): 775-777

Platts, M.M.; Anastassiades, E.; Sheriff, S.; Smith, S.; Bartolo, D.C., 1984: Spleen size in chronic renal failure. To investigate the cause of clinically detectable splenomegaly, which is common in patients receiving regular haemodialysis, splenic volume was assessed by isotopic scanning using intravenously injected technetium-99m microspheres in 34 controls a...