“Finding Food in a Feeding Current – Model System Calanoid Copepod”, Dr. Rudi Strickler, University of Wisconsin-Milwaukee

5 Jul 2012

Date: Thursday, July 5th, 2012
Time: 14:00 pm – 14:50pm (40 min. talk + 10 min. Q&A)
Venue: OIST Campus , Meeting room C209 (Level C)

Speaker: Dr. Rudi Strickler
Shaw Distinguished Professor of Biological Sciences
University of Wisconsin-Milwaukee

Following URL links to his interview video website.  The video will not play automatically by clicking the URL,
however please be careful of the sound when you play it.

Title: “Finding Food in a Feeding Current – Model System Calanoid Copepod”
“A chain is only as strong as its weakest link.”  Within the marine and aquatic food web there are several crucial links
governing the energy flow and community structure.  I will concentrate on the biophysics of the link between the calanoid
copepods as grazers and their food planktonic algae.  Both entities live in the 3-D space of open water bodies – an environment
with sparse environmental cues for orientation, random movements of the matrix water, and full of hungry predators.

In order to encounter food particles calanoid copepods create feeding currents.  The animals are of a size of 0.5 to 5 millimeters;
they swim at speeds of a few millimeters per second.  Therefore, their fluid environments are in the realm of low Reynolds numbers
where viscosity and laminar flow create challenges for the animals.

The questions I will address are:  what are the characteristics of the feeding currents?
 What are the fates of algae entrained in the feeding currents?
How do calanoid copepods sense the presence and positions of algae within the feeding currents?

I will show answers to these questions based on high-speed video and holographic observations and cooperation with fluid-dynamic researchers.
Additionally, I will elaborate on the application of these observations for microfluidic devices and micro-sensor designs.

Japanese Information

Open Technology Center
Physics Resources Section
Marine Science Resources Section
Okinawa Institute of Science and Technology Graduate University School Corporation
学校法人 沖縄科学技術大学院大学学園
高岡 健太郎
Tel: 098-966-2257 (Direct 直通), 098-966-8711(代表)
E-mail: kentaro.takaoka@oist.jp
URL: http://www.oist.jp