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>Avoidance and escape responses of the sub-antarctic limpetNacella edgari(Powell) (Mollusca: Gastropoda) to the sea starAnasterias perrieri(Smith) (Echinodermata: Asteroidea)
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Avoidance and escape responses of the sub-antarctic limpetNacella edgari(Powell) (Mollusca: Gastropoda) to the sea starAnasterias perrieri(Smith) (Echinodermata: Asteroidea)
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机译：Avoidance and escape responses of the sub-antarctic limpetNacella edgari(Powell) (Mollusca: Gastropoda) to the sea starAnasterias perrieri(Smith) (Echinodermata: Asteroidea)
The sub-antarctic limpetNacella edgari(Powell) (Patellidae) has avoidance and escape responses to the sea starAnasterias perrieri(Smith) (Asteriidae) in a kelp forest and in the laboratory.Nacella edgariwas preyed upon in the field byA. perrieri, but frequency of capture was low, suggesting the effectiveness of defensive behaviors. Both avoidance and escape responses by the limpet consisted of extension and waving of the pallial tentacles, mushrooming and rotation of the shell and flight. However, escape responses were characterized by greatly intensified rotation of the shell through a horizontal plane. This study extends the evaluation of defensive responses in gastropods to a species which occurs in the southern Indian Ocean.
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