• Animal Systematics, Evolution and Diversity
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• 제8권1호
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• pp.69-88
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• 1992

1989년 7월 12일부터 17일까지 울릉도의 10개 지점에서 채집되고 일부 기증받은 해산 신복족류와 기안류의 표본들을 동정한 결과 모두 7과 14속 19종이 되었다. 이로서 울릉도의 신복족목 16종과 기안목 2종이 울릉도 미기록종으로 추가되었으며, 이들 중 Zafrona(Clathranachis) Japonica(A. Adams, 1960), Enzinopsis menkeana(Dunker, 1860), Pollia mollis(Gould,1860)등 3종은 한국 미기록종이다.

• 한국패류학회지
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• 제2권1호
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• pp.10-12
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• 1986

Pettancylus nipponicus (freshwater limpet) collected from the Lake Choon Cheon were cultrued in aquarium and studied in the respects of an egg deposition and the developmental characters of cleavage. The species were collected only in the Lake Uiam and Choon Cheon and easily sampled on the debris like vinyls and cans. Those smooth surfaces were suitalble substrata for attaching. P. nipponicus, about 4 mm in adult, deposited an egg in one calcareous egg-capsule on the aquarium walls, while many eggs are surrounded in a jelly-like egg-envelope in the most gastropods. And another special features was that an egg-capsule was consisted of two valves and the suture was opended as hatching. A diameter of its egg was $55{{\mu}m}$ and the length of an egg capsule was $620{{\mu}m}$ and $510{{\mu}m}$ in long and short diameter, respectively. It took about 8 hours from beginning cleavage to 16-cell stage and about one year to become an adult.