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Responses of the sand dollar Scaphechinus mirabilis to extreme environmental changes

  • Physiological Ecology
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Abstract

The survival ability of the adult sand dollar Scaphechinus mirabilis (Agassiz) in varying environments was studied. In an experiment on a hard substrate, 88% of the animals survived for 40 days (August–September) during variation of sea water temperature from 21.0 to 16.5°C and variation of salinity from 33.3 to 31.5‰. At 17°C, the salinity tolerance range was 34–24‰. At the same temperature. 100% of the animals remained alive for 14 days within a salinity range from 34 to 18‰; at 16 and 14‰ the ratio of surviving sea urchins was 30 and 20% respectively. Thus, S. mirabilis has considerable adaptive capabilities and is able to survive for a long time under extreme environmental changes.

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Authors and Affiliations

  1. Institute of Marine Biology, Far East Division of Russian Academy of Sciences, Vladivostok, 690041, Russia

    S. D. Kashenko

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  1. S. D. Kashenko
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Correspondence to S. D. Kashenko.

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Original Russian Text © S.D. Kashenko, 2008, published in Biologiya Morya.

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Kashenko, S.D. Responses of the sand dollar Scaphechinus mirabilis to extreme environmental changes. Russ J Mar Biol 34, 166–169 (2008). https://doi.org/10.1134/S1063074008030048

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  • DOI: https://doi.org/10.1134/S1063074008030048

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