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The sensory organs of gastropods (snails and slugs) include olfactory organs, eyes, statocysts and mechanoreceptors.〔 Gastropods have no sense of hearing.〔Chase R.: ''Sensory Organs and the Nervous System''. in Barker G. M. (ed.): ''The biology of terrestrial molluscs''. CABI Publishing, Oxon, UK, 2001, ISBN 0-85199-318-4. 1-146, cited pages: 179-211.〕 == Olfactory organs == (詳細はtentacles.〔 In opisthobranch marine gastropods, the chemosensory organs are two protruding structures on top of the head. These are known as rhinophores. An opisthobranch sea slug ''Navanax inermis'' has chemoreceptors on the sides of its mouth to track mucopolysaccharides in the slime trails of prey, and of potential mates.〔Michael D. Miller 1998. (''Navanax inermis'' ). The Slug Site, accessed 23 March 2009〕 The freshwater snail ''Bithynia tentaculata'' is capable of detecting the presence of molluscivorous (mollusk-eating) leeches through chemoreception, and of closing its operculum to avoid predation. The deepwater snail ''Bathynerita naticoidea'' can detect mussel beds containing the mussel ''Bathymodiolus childressi'', because it is attracted to water that has cues in it from this species of mussel. Some terrestrial gastropods can track the odor of food using their tentacles (tropotaxis) and the wind (anemotaxis). == Eyes == In terrestrial pulmonate gastropods, eye spots are present at the tips of the tentacles in the Stylommatophora or at the base of the tentacles in the Basommatophora. These eye spots range from simple ocelli that cannot project an image (simply distinguishing light and dark), to more complex pit and even lens eyes. Vision is not the most important requirement in terrestrial gastropods, because they are mainly nocturnal animals.〔 Some gastropods, for example the freshwater Apple snails (family Ampullariidae) and marine species of genus ''Strombus'' can completely regenerate their eyes. The gastropods in both of these families have lens eyes. Morphological sequence of different types of multicellular eyes exemplified by gastropod eyes: 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「The sensory organs of gastropods (snails and slugs) include olfactory organs, eyes, statocysts and mechanoreceptors. Gastropods have no sense of hearing.Chase R.: ''Sensory Organs and the Nervous System''. in Barker G. M. (ed.): ''The biology of terrestrial molluscs''. CABI Publishing, Oxon, UK, 2001, ISBN 0-85199-318-4. 1-146, cited pages: 179-211.== Olfactory organs ==(詳細はrhinophoreを参照)In terrestrial gastropods the most important sensory organs are the olfactory organs which are located on the tips of the 4 tentacles.In opisthobranch marine gastropods, the chemosensory organs are two protruding structures on top of the head. These are known as rhinophores.An opisthobranch sea slug ''Navanax inermis'' has chemoreceptors on the sides of its mouth to track mucopolysaccharides in the slime trails of prey, and of potential mates.Michael D. Miller 1998. (''Navanax inermis'' ). The Slug Site, accessed 23 March 2009The freshwater snail ''Bithynia tentaculata'' is capable of detecting the presence of molluscivorous (mollusk-eating) leeches through chemoreception, and of closing its operculum to avoid predation.The deepwater snail ''Bathynerita naticoidea'' can detect mussel beds containing the mussel ''Bathymodiolus childressi'', because it is attracted to water that has cues in it from this species of mussel.Some terrestrial gastropods can track the odor of food using their tentacles (tropotaxis) and the wind (anemotaxis).== Eyes == Gastropod eye -->In terrestrial pulmonate gastropods, eye spots are present at the tips of the tentacles in the Stylommatophora or at the base of the tentacles in the Basommatophora. These eye spots range from simple ocelli that cannot project an image (simply distinguishing light and dark), to more complex pit and even lens eyes. Vision is not the most important requirement in terrestrial gastropods, because they are mainly nocturnal animals.Some gastropods, for example the freshwater Apple snails (family Ampullariidae) and marine species of genus ''Strombus'' can completely regenerate their eyes. The gastropods in both of these families have lens eyes.Morphological sequence of different types of multicellular eyes exemplified by gastropod eyes:」の詳細全文を読む スポンサード リンク
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