Physiological asymmetry in the bilateral crusher claws of a lobster
In: The Journal of Experimental Zoology. Wiley Interscience: New York, etc.. ISSN 0022-104X; e-ISSN 1097-010X, more
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Homarus americanus H. Milne Edwards, 1837 [WoRMS]
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| Abstract |
The American lobster, Homarus americanus which usually has dimorphic chelipeds consisting of a cutter and a crusher claw, occasionally has bilateral crusher claws. In these unusual lobsters however, only one of the paired claw behaves as a normal crusher claw. The other claw has only the appearance of a crusher claw but behaves as a cutter claw being able to close its dactyl completely in 20 msec and having short-sarcomere, fast fibers in its closer muscle. This suggests that claw morphology and closer muscle composition are not under rigid developmental control. |
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