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Ontogenetic and seasonal variation in the Diel Vertical Migration of the Copepods Metridia lucens and Metridia longa

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posted on 1995-12-01, 00:00 authored by Graeme HaysGraeme Hays
Plankton samples collected and analyzed by the Continuous Plankton Recorder survey were used to examine the length of time spent near the surface in the North Atlantic and the North Sea by three closely related groups of zooplankton (copepodite stages 1-4 Metridia spp., copepodite stages 5-6 Metridia lucens, and copepodite stages 5-6 Metridia longa). For all three groups, the mean daily length of time spent near the surface in each month of the year covaried seasonally with day length. In addition, the amount of time spent near the surface varied significantly between the three groups, being longest for the copepods of smallest body size (C 1-C4 Metridia spp.) and shortest for the copepods of largest body size (C5-C6 M. longa). These results support the suggestion that diel vertical migration serves to reduce the risk of mortality from visually orienting predators

History

Journal

Limnology and oceanography

Volume

40

Pagination

1461 - 1465

Location

Grafton, Wis.

Open access

  • Yes

ISSN

0024-3590

eISSN

1541-5856

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1995, American Society of Limnology and Oceanography

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