The escape responses of twelve individuals of the stomatopod Odontodactylus havanensis (35–64 mm body length) were recorded with conventional and high-speed (60 and 500 images per second) video cameras. Unlike the typical pattern of escape swimming seen in most elongate Malacostracan crustaceans in which quick backward swimming is achieved by rapid pleonal flexion (tail-flipping), O. havanensis always swam forward during its escape response. Rowing of the pleopods provided thrust during swimming. The power phase was metachronal and the recovery phase was approximately synchronous. The mean stroke frequency, from high-speed video, was 17 Hz. With this swimming mode, speeds of 1.25 to 1.62 meters per second and 21 to 40 body-lengths per second were attained. The intermittent nature of the rowing propulsive mode led to temporally unsteady kinematics marked by periodicity. Although forward swimming via pleopod rowing is a very common form of locomotion employed by elongate crustaceans, it is typically observed only during relatively slow, “routine” swimming, with escape being driven by tail-flipping. Odontodactylus havanensis breaks this pattern. Further study into how this species is able to achieve such high speeds via rowing locomotion may yield new insights into our knowledge of animal locomotion through fluids.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.