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1 edition of Parr-smolt transformation in chinook salmon (Oncorhynchus tshawytscha W. found in the catalog.

Parr-smolt transformation in chinook salmon (Oncorhynchus tshawytscha W.

Parr-smolt transformation in chinook salmon (Oncorhynchus tshawytscha W.

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Published by Oregon Dept. of Fish and Wildlife, Research Section in Corvallis, Or .
Written in English

    Subjects:
  • Chinook salmon.,
  • Smolting.,
  • Adenosine triphosphatase.,
  • Sodium/potassium ATPase.,
  • Gills -- Physiology.

  • Edition Notes

    Other titlesGill (Na+K)-activated adenosinetriphosphatase activity.
    StatementR.D. Ewing ... [et al.]
    SeriesInformation report series -- no. 77-4.
    ContributionsOregon. Fish Division. Research Section.
    The Physical Object
    Pagination16 p. :
    Number of Pages16
    ID Numbers
    Open LibraryOL18187915M

    Abstract. We examined changes in fluid transport by the intestine of Atlantic salmon (Salmo salar L) undergoing parrsmolt transformation during vitro measurements of fluid transport rate (J v) across non-everted middle and posterior intestinal sac preparations were made in late April and early June and from February through June for juvenile smolting ://   The authors examined the toxicity of two fire retardant products, PHOS-CHEK F and LCA, to salmon undergoing parr-smolt transformation. Yearling stream-type chinook salmon at the smolt stage were exposed to eight concentrations of each retardant in freshwater and a no-PHOS-CHEK control for 96 h to determine acute ://

      Chinook salmon are the largest of the Pacific salmon, with some individuals growing to more than pounds. These huge fish are rare, as most mature chinook are under 50 pounds. Spawning Most chinook spawn in large rivers such as the Columbia and Snake, although they will also use smaller streams with sufficient water :// Effects of Handling and Crowding on the Stress Response and Viability of Chinook Salmon Parr and Smolts, Completion ://

    Over the course of the parr-smolt transformation, changes in the density of BrdU cells showed a positive relationship with natural fluctuations in plasma T4. This relationship suggests that even small changes in thyroid activity can stimulate the proliferation of neural progenitor cells in the salmon :// Seasonal temperature cues may play an important role in the parr–smolt transformation of Pacific salmon Oncorhynchus spp., but salmon reared in groundwater‐supplied hatcheries with seasonally stable water temperatures do not experience these cues. In this study, conducted over six release years, hatchery spring Chinook salmon O. tshawytscha that were initially reared in a groundwater


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Parr-smolt transformation in chinook salmon (Oncorhynchus tshawytscha W Download PDF EPUB FB2

Criteria for parr-smolt transformation in juvenile chinook salmon (Oncorhynchus tshawytscha). Aquaculture, A number of common indicators of parr-smolt transformation were examined in juvenile spring chinook in relation to the timing of seaward migration and ocean :// A number of common indicators of parr-smolt transformation were examined in juvenile spring chinook in relation to the timing of seaward migration and ocean entry.

Only gill (Na+K)-ATPase activity showed a correlation between peaks in activity and migration or ocean entry in spring ://   Aquaculture, 89 () Elsevier Science Publishers B.V., Amsterdam Feather meal as a dietary protein source during parr-smolt transformation in fall chinook salmon L.G.

Fowler U.S. Fish and Wildlife Service, Abernathy Salmon Culture Technology Center, Abernathy Road, Longview, WA ( (Accepted 9 February ) ABSTRACT Fowler, L.G.,   Juvenile Chinook salmon at different stages of the parr-smolt transformation.

The bottom picture is a pre-smolt Chinook that’s still adapted to freshwater, the middle Chinook is undergoing smoltification, and the Chinook in the top picture has completed smoltification and is prepared for saltwalter :// The authors examined the toxicity of two fire retardant products, PHOS‐CHEK F and LC‐95A, to salmon undergoing parr–smolt transformation.

Yearling stream‐type chinook salmon at the smolt stage were exposed to eight concentrations of each retardant in freshwater and a no‐PHOS‐CHEK control for 96 h to determine acute ://   Limited quantitative information is available on how temperature affects the completion of the parr-smolt transformation.

During parr-smolt transformation in salmonids, water temperature is believed to primarily control the rate of physiological responses to a changing photoperiod, and not to act as a cue in its own right (Clarke et al.,   Transcriptional profiling of the parr‐smolt transformation in Atlantic salmon.

Comparative Biochemistry and Physiology, 7D, – / [Google Scholar] Saraiva L. R., & Korsching S. A novel olfactory receptor gene family in teleost ://   Aquacultural Engineering 13 () Growth and Parr-Smolt Transformation of Atlantic Salmon (Salmo salar L.) under Different Light Intensities and Subsequent Survival and Growth in Seawater Sigurd O.

Stefansson,* Tom J. Hansen & G. Lasse Taranger* Institute of Marine Research, Department of Aquaculture, Matre Aquaculture Station, N Matredal, Norway (Received 24 In the present study, groups of juvenile Pacific Chinook salmon were fed five environmentally relevant concentrations of either BDE ( ng total PBDEs/g food), BDE ( ng total PBDEs/g food), or nearly equal mixtures of both congeners ( ng total PBDEs/g food) for days.

parr-smolt transformation, and   Coho smolt ADF&G Chinook parr Coho parr ADF&G ADF&G mm FL 48mm FL 43mm CHUM Faint parr marks above lateral line Small cm, leaves freshwater as fry ADF&G ADF&G FL 39mm ADF&G ADF&G PINK Small cm, leaves freshwater as fry No parr marks. Dorsal surface green.

Ventral & sides silver. ADF&G ADF&G We analyzed a small subset of known olfactory proteins in Atlantic salmon, and the expression of most of these shows seasonal as well as developmental variation related to life stage (maturity and the parr–smolt transformation).

Thus, the study supports the hypothesis that certain aspects of olfaction are developed during the :// Smolt-release dates are discussed in terms of the development of the marine osmoregulatory mechanisms and the timing of parr–smolt transformation.

Key words: Atlantic salmon Mucous lysozyme concentrations were determined in juvenile coho salmon (Oncorhynchus kisutch) and spring chinook salmon (O. tshawytscha) to establish reference levels during the time associated with the parr-smolt transformation.

The first reported naris and vent mucous lysozyme levels are provided for spring chinook salmon and coho :// Photoperiod Control of Parr–Smolt Transformation in Atlantic Salmon (Salmo salar): Changes in Salinity Tolerance, Gill Na+,K+-ATPase Activity, and Plasma Thyroid Hormones Book.

Full-text Author: Ewing RD, Journal: Aquaculture.[/06] Criteria for parr-smolt transformation in juvenile chinook salmon (Oncorhynchus tshawytscha) Abstract.

The delicate silvery fish, the smolts, which migrate seawards each spring were thought by early naturalists to be a distinct species from the drab, brownish parr in the freshwater reaches of rivers, until it was demonstrated that both were juvenile forms of the anadromous salmon   CHINOOK SALMON STRESS INDICES stage of parr–smolt development rather than to the rearing environment.

Physiological changes char-acteristic of the parr–smolt transformation are trig-gered or accelerated in migrating fish and include /Congleton The relationship between smoltification and smolt‐to‐adult return (SAR) of spring chinook salmon Oncorhynchus tshawytscha from the Deschutes River, Oregon, was examined for four release groups in each of three successive years.

Fish were reared, marked with coded wire tags, and released from Round Butte Hatchery, Pelton Ladder rearing facility, and Warm Springs National Fish ://() SGR was greatest in pre-smolt fingerlings (i.e.

fry), and then declined, whereas LGR was maximal during the period of parr-smolt transformation. Growth rate of chinook was accelerated in the warmer water of the laboratory ( °c) compared to that experienced at a commercial hatchery ( °c).

The parr-smolt transformation in Atlantic salmon (Salmo salar) is a complex developmental process that culminates in the ability to migrate to and live in ://. Whole animal transepithelial potentials (TEP) of yearling coho salmon (Oncorhynchus kisutch) in fresh water and after transfer to seawater were recorded throughout parr-smolt transformation (smoltification) from February to Augustalong with plasma Na+ and Cl− concentrations and osmolality.

Based on plasma ion regulation in seawater, the yearling coho in this study completed Juvenile Coho Salmon undergo many physiological changes during their springtime transformation from a freshwater parr to a migratory, seawater-capable smolt. Although field observations indicate smolts moving towards the surface and across the breadth of their streams to either swim or drift downstream with the current, water-velocity preferences of these developing cohos are ://Increases in branchial Na+/K+ ATPase activity during seawater adaptation of euryhaline fish species, have been well documented.

During the parr-smolt transformation of salmonids this activity increases two to five fold and is used as an indicator of the transformation. In order to improve the understanding of differences in enzyme activity found between Atlantic salmonSalmo salar parr and