アラレタマキビ Nodilittorina radiata におけるつま先立ち行動
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概要
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In gastropods, there are two typical attachment manners, namely foot attachment and mucous attachment. Some littorinids are known to minimize heat stress by "tip-lip" attachment, which is the manner to attach with dried mucous thread to minimize contact with the hot substratum. Spatial variation on the frequency of "tip-lip" attachment was examined in the periwinkle, Nodilittorina radiata at two rocky coasts in Usa-cho, Kochi, Japan. Shell length, direction of attachment site and height of attachment site might not affect the attachment manners. Height of rocks was negatively correlated with the frequency of "tip-lip" attachment. These results suggest two possibilities: snails acquire lower thermal stress on higher rocks and/or snails exhibit "tip-lip" attachment more frequently on horizontal rocks than on vertical rocks.
- 高知大学海洋生物教育研究センターの論文
- 2001-03-15
高知大学海洋生物教育研究センター | 論文
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