Abstract
SEVERAL species of copepods in the Arctic are known to have annual life-cycles in the sea1 and freshwater2, and macroplanktonic Crustacea of northern seas may not breed until two years old3. So far as I am aware, no copepod has been described with a life-cycle greater than one year, and the extreme response of Cyclops scutifer in Lake Hazen to conditions of low temperature and limited food seems worth recording.
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References
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McLAREN, I. A Biennial Copepod from Lake Hazen, Ellesmere Island. Nature 189, 774 (1961). https://doi.org/10.1038/189774a0
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DOI: https://doi.org/10.1038/189774a0
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