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Population Dynamics of Marine Copepods: The Importance of Photoperiodism
Authors:MARCUS   NANCY H.
Affiliation:Woods Hole Oceanographic Institution Woods Hole, Massachusetts 02543
Abstract:SYNOPSIS. Biological oceanographers have traditionally emphasizedfood and temperature as the most important factors governingthe population dynamics of marine copepods. This paper addressesthe importance of light and light-dark periods as stimuli forthe induction of specific biological processes and activities.Attention is focused on photoperiodic control of dormancy andvertical migration, and the rhythmic expression of daily functionssuch as the timing of feeding and egg-laying. Emphasis is placedon relating the genetic basis of photoperiodically determinedresponses and activity rhythms to the population dynamics, ecologyand evolution of marine copepods, and the maintenance of diversezooplankton communities.
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