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Definition of Term

clasper flexion
(English) The erection of claspers. It may be the movement of individual claspers dorsally before a possible insertion attempt by a male bat ray (Ref. 51138) or backward and forward by a 'patrolling' Carcharias taurus (Ref. 51113). Sphyrna tiburo, according to Myrberg and Gruber (1974) (Ref. 51141) could pivot its claspers separately, alternately, and sometimes rapidly while swimming alone. They also noted 'clasper flexion with thrust' a side roll with clasper extension and body arching in S. tiburo.

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