Shark skin: a function in feeding.

E J Southall; D W Sims

doi:10.1098/rsbl.2003.0006

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Shark skin: a function in feeding.

E J Southall·D W Sims

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Abstract

Dermal denticles are unique tooth-like structures embedded in the skin of sharks and rays that protect them from predators and ectoparasites, reduce mechanical abrasion and possibly minimize swimming-induced drag. Here, we show that juvenile lesser spotted dogfish (Scyliorhinus canicula) also use this body armour to anchor food items near their tail so that bite-sized pieces can be torn away by rapid jaw and head movements. This scale-rasp behaviour is novel among fishes and suggests a new role for skin in the feeding ecology of sharks. Scale rasping may be important ecologically because it could function to increase the dietary breadth and growth potential of juveniles.

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Animals Dogfish Feeding Behavior Female Skin Physiological Phenomena Tail Journal Article Research Support, Non-U.S. Gov't

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E J Southall, D W Sims. 2003-08-07. Shark skin: a function in feeding.. https://doi.org/10.1098/rsbl.2003.0006

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