The timing of benthic copepod emergence

Date
2004-05-01
Authors
Teasdale, M
Vopel, K
Thistle, D
Supervisor
Item type
Journal Article
Degree name
Journal Title
Journal ISSN
Volume Title
Publisher
American Society of Limnology and Oceanography (ASLO)
Abstract

We investigated emergence of marine benthic harpacticoid and cyclopoid copepods from subtidal sediment into the bottom water. Previous studies that used traps in the field found that copepods emerged from the sediment within 2 h of dusk. We examined emergence in 20-min sampling periods over 13 h from 1200 to 0100 h in a laboratory flume under conditions of constant flow speed. The light intensity was adjusted to field conditions every 20 min. We observed a peak in emergence during the 20-min sampling period after the onset of darkness, greatly increasing the accuracy with which the timing of emergence is known. This result will help to set the stage for studies of emergence cues.

Description
Keywords
Active Emergence , Intertidal sediment , Harpacticoid copepod , Vertical Migration , Solute transport , Marine Meiofauna , Despersal , Behaviour , Habitats , Field
Source
Limnology and Oceanography, vol.49(3), pp.884 - 889
DOI
Rights statement
© 2004 by the American Society of Limnology and Oceanography, Inc. All Rights Reserved. (please see Citation and Publisher’s Version). Permission to make digital or hard copies of part or all of Limnology and Oceanography for personal or educational use is hereby granted without fee.