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Egg dormancy in a neritic calanoid copepod and its implications to overwintering in boreal waters
Zillioux, E.J.; Gonzalez, J.G. (1972). Egg dormancy in a neritic calanoid copepod and its implications to overwintering in boreal waters, in: Battaglia, B. (Ed.) Fifth European Marine Biology Symposium. pp. 217-230
In: Battaglia, B. (Ed.) (1972). Fifth European Marine Biology Symposium. European Marine Biology Symposia, 5. Piccin Editore: Padova. 348 pp., meer
In: European Marine Biology Symposia., meer
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Documenttype: Congresbijdrage
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  • Zillioux, E.J.
  • Gonzalez, J.G.
Abstract
    Laboratory and field studies have proven the existence of temperature-dependant dormancy in the egg of Acartia tonsa. A winger 'resting' egg has not previously been recorded in the life history of a marine copepod. This phenomenon is believed to be the mechanism responsible for the spring resurgence of this species following its normal mid-winter disappearance in North America coastal areas and estuaries north of 40 degree latitude. Cold-induced dormancy was also observed in sub-tropical specimens of A. tonsa. Evidence is presented that suggests egg dormancy may be a common mechanism of overwintering for many species of neritic, boreal copepods.
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