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Related Experiment Videos

Photosynthesis in copepods.

R W Epp, W M Lewis

    Science (New York, N.Y.)
    |December 18, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Zooplankton copepods can host living algae within their digestive tracts, facilitating photosynthesis. This finding suggests a symbiotic relationship beneficial for both algae and copepods.

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    Area of Science:

    • Aquatic Ecology
    • Zooplankton Biology
    • Photosynthesis Research

    Background:

    • Zooplankton grazers consume algae, with indigestible portions often considered a disadvantage.
    • The adaptive value of algal indigestibility for algae and grazers is debated.

    Purpose of the Study:

    • To investigate the physiological interactions between copepods and ingested algae.
    • To determine if the copepod gut environment supports algal photosynthesis.

    Main Methods:

    • Cartesian diver respirometry was used to measure oxygen production and consumption.
    • Experiments were conducted on freshly killed copepods (Acanthocyclops vernalis) after starvation.

    Main Results:

    • Exposed to light, dead copepods produced significant oxygen, indicating active photosynthesis by ingested algae.

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  • Dead copepods consumed significant oxygen in the dark, suggesting respiration.

    • Conclusions:

    • The copepod gut provides a suitable environment for photosynthesis by ingested algae.
    • This suggests a potential nutritional benefit or symbiotic relationship previously underestimated.