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ISSN: 0018-8166 Print
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DOI: 10.1615/HydrobJ.v41.i3
Pages: 126
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DOI: 10.1615/HydrobJ.v41.i3.20
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Article price - $35.00 |
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Influence of the Resting Period on the Rhythm of Hatching of Polyphemus pediculus Young (Crustacea: Branchiopoda, Onychopoda) from Resting Eggs
L. G. Butorina
Institute of Biology of Inland Waters of Russian Academy of Sciences, Borok, Yaroslavl' Region, Russia
ABSTRACT
Development of resting eggs of Polyphemus pediculus is asynchronous. The hatching of young is wave-form in character; it occurs by portions in accordance with the native diurnal, seasonal, perennial rhythms, as well as the environmental conditions survived by a population during the resting period. The species cyclicity is genetically determined. P. pediculus is a monocyclic species under any conditions. Local P. pediculus populations are genetically heterogeneous and formed by generations having different duration of the life cycle.
pages 13-27
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