著者

出口 竜作

出版者

宮城教育大学

雑誌

宮城教育大学紀要 (ISSN:13461621)

巻号頁・発行日

vol.42, pp.73-80, 2007

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Limpets (Mollusca: Gastropoda) are some of the most abundant animals in the intertidal zone of rocky shores. Here I report methods for collecting and culturing the limpets, especially Nipponacmea fuscoviridis, and describe developmental processes in this species. Adults of N. fuscoviridis collected from May to November had ripe gonads. They could be maintained for 1-2 months without food at room temperature. Immature oocytes obtained from ovaries were induced to mature by ammonia treatment. Following insemination, the ammonia-treated mature oocytes formed the first and second polar bodies, cleaved, and developed to veliger larvae within 1 day. N. fuscoviridis may be one of the most convenient animals for observing the developmental processes in the classroom.