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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Fish physiology and biochemistry 7 (1989), S. 387-393 
    ISSN: 1573-5168
    Keywords: teleost ; annual cycles ; photoperiod ; freeze-resistance ; hypothalamus ; pituitary ; growth hormone ; antifreeze protein
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The essential features of experiments carried out over the past fifteen years are brought together with new data to formulate a model describing the hormonal regulation of the annual plasma antifreeze polypeptide (AFP) cycle in winter flounder (Pseudopleuronectes americanus). The precise time of onset of antifreeze synthesis in the fall appears to be regulated by photoperiod acting through the central nervous system (CNS) on the pituitary gland. During the summer, growth hormone (GH) blocks transcription of the AFP genes. With the loss of long daylengths in the fall, the CNS inhibits the release of GH allowing AFP gene transcription in the liver to proceed. In the spring GH is again released from the pituitary and AFP gene transcription is blocked.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Fish physiology and biochemistry 7 (1989), S. 409-413 
    ISSN: 1573-5168
    Keywords: gene transfer ; transgenic fish ; growth hormone ; antifreeze polypeptides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Successful production of transgenic fish by gene transfer technology is a very important breakthrough in the techniques of genetic manipulation in animals. This will have an impact of an unprecedented scale in fish biology, aquaculture and mariculture. This is a summary of the workshop on the Transgenic Fish presented at this Symposium. The Workshop discussed the current knowledge, experimental difficulties and related topics of the transgenic fish. It recommended further research on better gene constructs, methods development, safety containment and the closer collaboration of researchers of different disciplines.
    Type of Medium: Electronic Resource
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