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의암호 (衣岩湖) 패류에 (貝類) 관한 연구 (5) - 칼조개 ( Lanceolaria acrorhyncha ) 의 생식시기에 관한 조직학적 연구 -
권오길,박갑만 ( Oh Kil Kwon,Gap Man Park ) 한국하천호수학회 1985 생태와 환경 Vol.18 No.3·4
Authors have studied the size of eggs, the seasonal gonad changes, the spawning season and the demibranchs morphology of Lanceolaria acrorhyncha in the Lake Uiam. These researches were studied during the period from April 1983 to September 1984. The results of these investigations were summarized as follows; Mean diameter of the eggs was gradually increased from March (311 ㎛) to November and the mean diameter of maximum and minimum egg size was 282㎛ and 71㎛, respectively. The gonad in the female was filled with the connective tissue and the egg-sacs from March to November. The egg-sac was constricted after discharging of eggs and the connective tissue was gradually increased. The outer demibranchs of females served as marsupial(gravid) pouch. And the secondary water-tubes remain after discharging of the glochidia, and the central water-tubes served as ovisacs only in the primary water-tubes. The marsupial demibranchs lacked the divided system. The size of the marsupial demibranchs on the spawning seasons was increased three times.
권오길,Gwon, O-Gil 한국과학기술단체총연합회 1997 과학과 기술 Vol.30 No.9
현대 의학계는 사람의 수명연장의 수단으로 장기이식 연구가 활발하게 진행되고 있다. 그러나 사람의 장기수요가 달리자 다른 동물의 장기이식 실현에 눈을 돌리고 있는데 가장 눈독을 들이고 있는 동물은 돼지라고 한다. 그럼 과연 돼지의 장기를 사람에 이식할 수 있을까?
권오길,Gwon, O-Gil 한국과학기술단체총연합회 1997 과학과 기술 Vol.30 No.5
이안 윌멋에 의해 탄생된 양 '돌리'는 지금 9개월째 잘 자라고 있다. 과학은 잘 쓰면 유익한 것이어서 이 실험은 품종개량(식량문제), 위기종의 종보존, 의ㆍ약학에 무한한 공헌을 할 가능성이 있으므로 과학의 진행은 막지말고 이에 따른 부작용을 제거하는 장치마련이 바람직하다.
의암호의 (衣岩湖) 패류에 (貝類) 관한 연구 (6) - 수정또아리 , Polypylis hemisphaerula 의 산란과 발생에 관한 연구 -
권오길,이준상,박갑만 ( Oh Kil Kwon,Jun Sang Lee,Gap Man Park ) 한국하천호수학회 1986 생태와 환경 Vol.19 No.1·2
Polyplis hemisphaerula (Planorbidae) collected from the rice field and the pond near the Ch`unch`o^˘n City was used as material for researching on the egg deposition and cleavage. The samples were transfered to the aquaria controlled at 28℃ and many characters of the species were studied for three years from 1983. The shell height and width of the adult were 1. 5 mm and 5. 2 mm, respectively. In a certain occassion the method of removement was floating on the waters as Radix. The eggs were surrounded by an egg envelope made up of the jelly-like substances and an average number of the fertilized eggs contained in an envelope was 4. 2 counted 119. The mean time required from two-cell stage to four-cell stage, from 4 to 8, 8 to 16-cell was seventeen minutes respectively and the hatching period was about 4.5 days.