M. Iwata

Publications66
h-index22
Citations1,266
Highly Influential Citations46
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Downstream migratory behavior of salmonids and its relationship with cortisol and thyroid hormones: A review
  • M. Iwata
  • Biology, Environmental Science
  • 1 October 1995
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Gonadotropin releasing hormone (GnRH) neurons project to growth hormone and somatolactin cells in the steelhead trout
Analysis of gene expression using gonadotropin-releasing hormone (GnRH) antisense oligonucleotide confirmed by immunocytochemical localization the occurrence of GnRH neurons along the nervus…
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cDNA cloning and expression analysis of thyroid hormone receptor in the coho salmon Oncorhynchus kisutch during smoltification.
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The parr–smolt transformation of Arctic charr is comparable to that of Atlantic salmon
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Four dicephalous specimens of the blue shark, Prionace glauca, from Japan
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Embryonic development of gonadotropin‐releasing hormone neurons in the sockeye salmon
TLDR
Test the hypothesis that gonadotropin‐releasing hormone (GnRH) neurons are formed in the olfactory placode during embryonic development in a salmonid, Oncorhynchus nerka, and found most of the GnRH neuronal population was found in ganglia of the nervus terminalis, at the cribriform bone (gCB), and at the rostral Olfactory bulb (gROB).
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Circadian Changes in Serum Concentrations of Steroids in Japanese Char Salvelinus leucomaenis at the Stage of Final Maturation
TLDR
The results strongly suggest the existence of circadian-like diel changes in serum T, DHP, F and OHP levels in bothsex and 11KT in male, and no variations in serum E2 in female and P in both sex in spermiated/ovulated Japanese char under the stage of final maturation.
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Genetic identification of walleye pollock (Theragra chalcogramma) populations on the basis of tetrazolium oxidase polymorphism.
  • M. Iwata
  • Environmental Science
    Comparative biochemistry and physiology. B…
  • 15 January 1975
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Maturational changes in brain contents of salmon GnRH in rainbow trout as measured by a newly developed time-resolved fluoroimmunoassay.
TLDR
Changes in sGnRH contents in the hypothalamus and the pituitary indicate that sGNRH is involved in final maturation (ovulation or spermiation) in the rainbow trout.
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Profiles in growth, smoltification, immune function and swimming performance of 1‐year‐old masu salmon Oncorhynchus masou masou reared in water flow
TLDR
The results indicate that water-flow conditions can affect growth and fitness of juvenile masu salmon, which are desirable for both release programs and aquaculture of this species.
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