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Related Experiment Videos

Pristane in Zooplankton.

M Blumer, M M Mullin, D W Thomas

    Science (New York, N.Y.)
    |May 31, 1963
    PubMed
    Summary
    This summary is machine-generated.

    Planktonic copepods like Calanus finmarchicus contain high levels of the hydrocarbon pristane. These crustaceans are the main source of pristane found in shark and whale liver oils.

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    Area of Science:

    • Marine Biology
    • Biogeochemistry

    Background:

    • Pristane is a hydrocarbon found in marine ecosystems.
    • The sources and pathways of pristane accumulation in marine food webs are not fully understood.

    Purpose of the Study:

    • To investigate the concentration of pristane in key Arctic copepod species.
    • To determine if these copepods are a significant source of pristane in marine predators.

    Main Methods:

    • Analysis of pristane content in the body fat of Calanus finmarchicus, C. glacialis, and C. hyperboreus.
    • Comparison of pristane levels in copepods with known concentrations in marine vertebrate liver oils.

    Main Results:

    • Unusually high concentrations of pristane (1-3% of body fat) were found in the studied copepods.

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  • These copepods represent a substantial source of dietary pristane for marine predators.

    • Conclusions:

    • Arctic copepods, particularly Calanus species, are a primary source of pristane in the diet of sharks and whales.
    • This finding elucidates a key step in the marine biogeochemical cycling of pristane.