Copepod flow modes and modulation: a modelling study of the water currents produced by an unsteadily swimming copepod.

ABSTRACT: Video observation has shown that feeding-current-producing calanoid copepods modulate their feeding currents by displaying a sequence of different swimming behaviours during a time period of up to tens of seconds. In order to understand the feeding-current modulation process, we numerically modelled the steady feeding currents for different modes of observed copepod motion behaviours (i.e. free sinking, partial sinking, hovering, vertical swimming upward and horizontal swimming backward or forward). Based on observational data, we also reproduced numerically a modulated feeding current associated with an unsteadily swimming copepod. We found that: (i) by changing its propulsive force, a copepod can switch between different swimming behaviours, leading to completely different flow-field pat

SUBMITTER: Jiang H 

PROVIDER: S-EPMC2442849 | biostudies-literature | 2007 Nov

REPOSITORIES: biostudies-literature