Results 181 to 190 of about 14,603 (222)
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Characterization of melanin-concentrating hormone in chum salmon pituitaries
Nature, 1983Many lower vertebrates exhibit colour change in response to the background. A dual hormonal control of colour change by two antagonistic pituitary melanophorotropic hormones was first postulated in amphibia by Hogben and Slome. It is well established that the melanotropins alpha- and beta-MSH are responsible for pigment dispersion in the integumentary ...
H, Kawauchi +4 more
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Cryopreservation of chum salmon blastomeres by the straw method
Cryobiology, 2002In order to preserve genetic resources of chum salmon, Oncorhynchus keta, optimum conditions for cryopreservation of isolated blastomeres were investigated. Survival rates under various conditions were compared: the nature and the concentration of cryoprotectants before and after freezing, the seeding temperature, and the developmental stages of donor ...
Satoshi, Kusuda +2 more
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Chum salmon pituitary fractions: Somatotropic activity and cytoimmunofluorescence studies
General and Comparative Endocrinology, 1979Abstract Highly purified chum salmon pituitary fractions were bioassayed for their ability to stimulate elongation in hypophysectomized rainbow trout, Salmo gairdneri . One fraction, previously identified as the Na-retaining principle, prolactin, was not active. Of the active fractions, only the most potent one elicited a dose response. An antiserum
M P, Komourdjian, D R, Idler
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An Improved Sibling Model for Forecasting Chum Salmon and Sockeye Salmon Abundance
North American Journal of Fisheries Management, 2007Abstract The sibling model is often one of the best methods for calculating preseason forecasts of adult return abundance (recruits) for populations of Pacific salmon Oncorhynchus spp. This model forecasts abundance of a given age-class for a given year based on the abundance of the previous age-class in the previous year.
Steven L. Haeseker +3 more
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Vertebral Abnormalities in Sockeye, Pink, and Chum Salmon
Transactions of the American Fisheries Society, 1966Abstract Radiographs of vertebral structures of 10,377 sockeye, 4,403 chum, and 4,777 pink salmon collected in 1958 to 1962 were examined to determine the frequency of occurrence of abnormal vertebrae in wild populations of mature Pacific salmon. Various types of deviations from the orderly processes of development or segmentation that resulted in ...
Charles D. Gill, Donald M. Fisk
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A radioimmunoassay for N-terminal peptide of chum salmon proopiocortin
Fish Physiology and Biochemistry, 1987A highly specific radioimmunoassay was developed for N-terminal peptide of salmonid proopiocortin using a guinea pig antiserum to the chum salmon peptide (sNPP 1). Since sNPP I has no tyrosine residue nor free N-terminal amino group, a mixture of minor components of sNPP 1, which have extensions of H-Val-LysGly- and H-Lys-Gly- at the N-terminus, were ...
A, Takahashi, H, Kawauchi, T, Hirano
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Marking Chum Salmon Fry Vertebrae with Oxytetracycline
North American Journal of Fisheries Management, 1986Abstract An experiment was conducted to determine the effectiveness of oxytetracycline (OTC) as a method of marking chum salmon (Oncorhynchus keta) fry vertebrae. Three groups of fry that originated from a gravel box incubation system and three groups that originated from a Japanese-style (channel) incubation system were treated with an OTC-Oregon ...
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Canadian Journal of Fisheries and Aquatic Sciences, 2014
Stocking with hatchery fish is the principal method for harvest augmentation and, recently, restoring endangered populations. However, there is increasing concern about the negative effects of competition between hatchery and wild fish. In this study, enclosure experiments were conducted to evaluate the effects of hatchery chum salmon fry ...
Koh Hasegawa +4 more
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Stocking with hatchery fish is the principal method for harvest augmentation and, recently, restoring endangered populations. However, there is increasing concern about the negative effects of competition between hatchery and wild fish. In this study, enclosure experiments were conducted to evaluate the effects of hatchery chum salmon fry ...
Koh Hasegawa +4 more
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Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1985
A relation between muscle protease activity and serum protease inhibitory activity of chum salmon during spawning migration was studied with regard to their physiological states. The autolytic activity of chum salmon muscle significantly increased, while the trypsin inhibitory activity in serum significantly decreased during spawning migration.
S, Ando, M, Hatano, K, Zama
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A relation between muscle protease activity and serum protease inhibitory activity of chum salmon during spawning migration was studied with regard to their physiological states. The autolytic activity of chum salmon muscle significantly increased, while the trypsin inhibitory activity in serum significantly decreased during spawning migration.
S, Ando, M, Hatano, K, Zama
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[Nucleotide sequence of chum salmon preproinsulin gene].
Molekuliarnaia biologiia, 1989The nucleotide sequence of chum salmon preproinsulin gene isolated from the phage library of genomic sequences is presented. The transcription initiation site of the gene was experimentally determined. The resolved upstream region contains a TATA-promoter sequence and CAAT-like-box sequence.
A P, Koval' +3 more
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