• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Journal articles
    • View Item
    • Home
    • Griffith Research Online
    • Journal articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • The relationship between acute stress, food intake, endocrine status and life history stage in juvenile farmed Atlantic salmon, Salmo salar

    Thumbnail
    View/Open
    54447_1.pdf (86.41Kb)
    Author(s)
    Pankhurst, NW
    Ludke, SL
    King, HR
    Peter, RE
    Griffith University Author(s)
    Pankhurst, Ned W.
    Year published
    2008
    Metadata
    Show full item record
    Abstract
    Different life history stages of juvenile Atlantic salmon around the period of smoltification were subjected to short term stress (confinement) over two sampling years using separate cohorts of hatchery-reared fish. In the first year, confinement stress suppressed subsequent feeding in smolts and post-smolts, but not parr, in association with elevated plasma cortisol levels. Post-smolts showed much lower levels of food intake than either parr or smolts. Plasma ghrelin levels were unaffected by stress in any group. In the second study year, pre-smolts had very low food intake and this was further suppressed following stress. ...
    View more >
    Different life history stages of juvenile Atlantic salmon around the period of smoltification were subjected to short term stress (confinement) over two sampling years using separate cohorts of hatchery-reared fish. In the first year, confinement stress suppressed subsequent feeding in smolts and post-smolts, but not parr, in association with elevated plasma cortisol levels. Post-smolts showed much lower levels of food intake than either parr or smolts. Plasma ghrelin levels were unaffected by stress in any group. In the second study year, pre-smolts had very low food intake and this was further suppressed following stress. Higher food intake levels in smolts were strongly inhibited post-stress. Both pre-smolts, and smolts showed elevated levels of plasma cortisol and glucose, and suppressed plasma ghrelin levels. Across both study years, stress that was accompanied by elevated plasma cortisol levels resulted in suppression of feeding, whereas a predicted association of suppressed plasma ghrelin levels with reduced food intake, was present only in the second year. The results of the present study indicate that elevated plasma cortisol is a consistent endocrine correlate of stress-suppression of feeding. It is also apparent that the peri-smolt period is associated with markedly reduced feeding in this stock of Atlantic salmon.
    View less >
    Journal Title
    Aquaculture
    Volume
    275
    Issue
    1-4
    DOI
    https://doi.org/10.1016/j.aquaculture.2008.01.001
    Copyright Statement
    © 2008 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Comparative physiology
    Zoology
    Fisheries sciences
    Publication URI
    http://hdl.handle.net/10072/26650
    Collection
    • Journal articles

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E
    • TEQSA: PRV12076

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander