Overview
Brief Summary
Historical importance
Ecology
Local Distribution and Habitats
Biogeographical Distribution
Life History
Behaviour
Cyclicity
Evolution & Systematics
Systematics or Phylogenetics
Morphology and Physiology
External Morphology
Anatomy
Conservation
Threats
Wikipedia
References & More Information
Bibliographies | Anatomy
The picture below clearly shows the anterior section of C. tigris with its proboscis, tentacles and foot fully extended. The siphon protrudes from the anterior part of the shell and is used to drawn in water for respiration (Burgess 1986). This is linked to the osphradium, which is a chemosensory device that many molluscs possess to sample water before it is drawn into the gills. Located below this is the proboscis which is predominantly for feeding, with tentacles either side with developed eyes for sensory functions (Burgess 1986). The muscular foot is extendbile and broad. The mantle lobes are strongly pigmented and heavily vascularised can slide up over the dorsal surface of the shell. When disturbed or inactive the mantle lobes are withdrawn into aperture. In C. tigris the extended mantle lobes bear projecting papillae or filaments that may be simple or complexly branched. The foot is used in locomotion and contains mucous secreting glands. The radula is a chitonous structure, almost like a "tongue", that is used to scrape and cut at food.
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