The Korean Journal of Malacology (한국패류학회지)
- Volume 2 Issue 1
- /
- Pages.10-12
- /
- 1986
- /
- 1225-3480(pISSN)
A Study on the Egg Deposition and the Development of Pettancylus nipponicus (Basommatophora: Ferrissidae)
담수삿갓조개(Pettancylus nipponicus)의 산란(産卵)과 발생(發生)에 관(關)한 연구(硏究)
- Kwon, Oh-Kil (Department of Biology, Kangweon National University) ;
-
Lee, Jun-Sang
(Department of Biology, Kangweon National University) ;
- Park, Gap-Man (Department of Biology, Kangweon National University)
- Published : 1986.12.01
Abstract
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
Keywords