Effects of small‐scale turbulence on copepods: The case of Oithona davisae

• DOI: 10.4319/lo.2003.48.3.1304
• Publication Date: 2010-07-01T17:59:38Z
• Authors: Enric Saiz; Albert Calbet; Elisabetta Broglio
• Keywords: Acartia tonsa

We report the effects of small‐scale turbulence on feeding rates marine copepod Oithona davisae . Laboratory experiments were conducted under a range dissipation between 10 −4 and 1 cm 2 s −3 Net enhancements observed only at lowest, whereas negative net appeared highest, intensities. These results contrast with expectations from an encounter‐based model for this species that predicted positive all This disagreement suggests presence detrimental moderate high intensities, very likely driven by either lower mechanosensor perception capability or capture success. In comparison to other ambush copepods, O. appears much more sensitive turbulence, which might be result its strict behavior, copepods like Acartia tonsa Centropages typicus , can switch into different modes, appear benefit turbulence. The response in our agrees recent field observations changes vertical distribution as function wind‐driven events. Hence, seems choose those depths where favors feeding.