Type of Document	Thesis
Author	Teasdale, Michael
URN	etd-08102004-142637
Title	The Timing of Benthic Copepod Emergence—A Laboratory Flume Study
Degree	Master of Science
Department	Oceanography, Department of
Advisory Committee	Advisor Name Title David Thistle Committee Chair Joel Kostka Committee Member Nancy Marcus Committee Member
Keywords	Laboratory Study Flume Copepod Benthic
Date of Defense	2003-12-01
Availability	unrestricted
Abstract I investigated the emergence of marine benthic harpacticoid and cyclopoid copepods from subtidal sediment into the bottom water. Previous field studies with traps found that copepods emerge from the sediment within 2 h of dusk. I examined emergence in 20-min periods from 1200 h to 0100 h (13 h) in a laboratory flume under conditions of constant flow velocity and in-situ salinity and temperature. Light intensity was adjusted to field conditions every 20 min. I observed the largest peak in benthiccopepod emergence during the 20-min sampling period corresponding to the onset of darkness. This result will help set the stage for studies of emergence cues. The synchronicity of emergence observed in our study may be an antipredation strategy to swamp potential predators, reducing the probability of any one individual being consumed.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    01_MJT_Title_Page.pdf 31.88 Kb 00:00:08 00:00:04 00:00:03 00:00:01 < 00:00:01   02_MJT_Signature_Page.pdf 29.88 Kb 00:00:08 00:00:04 00:00:03 00:00:01 < 00:00:01   03_MJT_Acknowledgements.pdf 33.62 Kb 00:00:09 00:00:04 00:00:04 00:00:02 < 00:00:01   04_MJT_TABLE_OF_CONTENTS.pdf 28.96 Kb 00:00:08 00:00:04 00:00:03 00:00:01 < 00:00:01   05_MJT_LIST_OF_TABLES.pdf 35.02 Kb 00:00:09 00:00:05 00:00:04 00:00:02 < 00:00:01   06_MJT_LIST_OF_FIGURES.pdf 40.06 Kb 00:00:11 00:00:05 00:00:05 00:00:02 < 00:00:01   07_MJT_Abstract.pdf 31.01 Kb 00:00:08 00:00:04 00:00:03 00:00:01 < 00:00:01   08_MJT_Body.pdf 89.09 Kb 00:00:24 00:00:12 00:00:11 00:00:05 < 00:00:01   09_MJT_Table_1.pdf 38.89 Kb 00:00:10 00:00:05 00:00:04 00:00:02 < 00:00:01   10_MJT_Table_2.pdf 35.30 Kb 00:00:09 00:00:05 00:00:04 00:00:02 < 00:00:01   11_MJT_Table_3.pdf 32.50 Kb 00:00:09 00:00:04 00:00:04 00:00:02 < 00:00:01   12_MJT_Table4.pdf 41.87 Kb 00:00:11 00:00:05 00:00:05 00:00:02 < 00:00:01   13_MJT_Figures.pdf 241.69 Kb 00:01:07 00:00:34 00:00:30 00:00:15 00:00:01   14_MJT_reference_page.pdf 45.85 Kb 00:00:12 00:00:06 00:00:05 00:00:02 < 00:00:01   15_MJT_BIOGRAPHICAL_SKETCH.pdf 36.24 Kb 00:00:10 00:00:05 00:00:04 00:00:02 < 00:00:01