한국산 (韓國産) 담수패류에 (淡水貝類) 관한 생태학적 연구 - 제3보 - 후꾸다뻘조개 Anodonta ( Sinanodonta ) fukudai 의 생활사 = Ecological Studies on the Freshwater Shell - fish from Korea

다국어 초록 (Multilingual Abstract)

This study is the 3rd result of ecological researches on the freshwater shell-fish to be investigated from April, 1975 to December, 1977. The result investigated from the early embryo to the grown-up shell-fish is as follows: 1. Anodonta (Sinanodouta) fukudai is outer gill breeder and cleavage develope in the marsupium. 2. A. fukudai that lives in Iri district begins the cleavage of its fertilized egg on September, glochidium is spawned from the marsupium. It is attached itself to the freshwater fish and is parasitic on it during February and March. The period of parasitism is 10∼20 days, though it is different from the temperature. 3. A. fukudai becomes glochidia through two cell stage… D shaped larva stage, then it puts its foot and lives freely after the parasitism of freshwater fishes. 4. D shaped larva does the vigorous rotary motion toward the watch direction. 5. Glochidium takes exercise of the opening and closing of shell and has keen hook or larval thread of foot. 6. A. fukudai lives on the vegetable planktons, the green algaes are in a large amount among them.