Critical swimming speeds of wild-caught sand-smelt Atherina presbyter larvae

Faria, Ana Margarida; Borges, Rita Alexandra; Gonçalves, Emanuel João

http://hdl.handle.net/10400.12/3089

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Authors

Faria, Ana Margarida

Borges, Rita Alexandra

Gonçalves, Emanuel João

Abstract(s)

Swimming abilities of wild-caught sand-smelt Atherina presbyter larvae were assessed as critical swimming speed (Ucrit) throughout ontogeny. The mean Ucrit increased with size, ranging from 3⋅6 to 18⋅7 cms−1, over the size range of 6⋅6–21⋅0mm LT. This indicates that at hatching A. presbyter larvae, far from being passive floaters, are already capable of active behaviours, which may influence their dispersal patterns.