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  • assessment  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Environmental biology of fishes 22 (1988), S. 91-99 
    ISSN: 1573-5133
    Keywords: Lipofuscin ; Temperature effects ; Developmental stages ; Marker substances ; Fish
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis Accumulation of fluorescent age pigments (FAP) was measured in pike,Esox lucius, during embryogenesis and larval development at different temperatures. Chloroform-as well as methanol-soluble age pigments from eggs and larvae were quantified. Chloroform-FAP accumulated linearly with embryonic and larval development. After yolksack resorption, FAP concentrations reached a maximum and declined thereafter. Chloroform-FAP accumulation was not temperature dependent. Similar patterns of methanol-soluble pigment accumulation were found but accumulation of methanol-FAP was, in contrast, significantly temperature dependent. As a result, methanol-FAP concentrations increased in direct proportion to the rising incubation temperature, but the maximum methanol-FAP fluorescence was found at 15°C and not at 180°C.
    Type of Medium: Electronic Resource
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  • 2
    facet.materialart.
    Unknown
    In:  cornelius.hammer@vti.bund.de | http://aquaticcommons.org/id/eprint/3309 | 1240 | 2012-11-10 17:54:48 | 3309 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-27
    Description: The atlanto-scandian herring consists of two major stocks, i.e. the Icelandic summer spawner and the Norwegian spring spawner. Both stocks have recovered well after complete collapse in the seventies and allow for a controlled fishery. The total allowable catch of the Norwegian spring spawner is currently 1.3 mill. t. The resumption of the fishery is accompanied by an annual and multi-nationalsurvey with Norwegian, Faeroe Islands, Icelandic and Russian contribution. In 1998 the EU will contribute to the survey with the Swedish vessel ”Argos” and in 1999 with the ”Walther Herwig III” under Dutch, Swedish and German participation. About half of the survey costs are covered by the EU by means of a funded study, the other half is contributed by the participating nations.
    Description: Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010.
    Keywords: Management ; Fisheries ; assessment ; stock management ; fisheries management ; scientific advice ; sustainable fisheries ; recruitment ; catch processing ; herring
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 12-15
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  • 3
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    Unknown
    In:  cornelius.hammer@vti.bund.de | http://aquaticcommons.org/id/eprint/3321 | 1240 | 2020-08-23 06:06:55 | 3321 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-27
    Description: The northern European fish stocks are assessed annually by ICES working groups. The results are evaluated biannually in two meetings of the Advisory Committee for Fisheries Management (ACFM) at ICES. Based on the working group assessments, ACFM formulates an advice for fisheries management and suggests a total allowable catch (TAC) which is based strictly on biological grounds. The summaries of the state of some selected stocks which are given here, are derived from the ACFM advice, formulated during the most recent May 1998 meeting. For many of the fish stocks the precautionary approach is still in the process of implementation, and only for some of them the management and target reference points have been fully defined.
    Description: Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010.
    Keywords: Management ; Fisheries ; fisheries management ; assessment ; scientific advice ; recruitment ; stock data
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 73-81
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