옥덩굴(Caulerpa okamurae Weber van Bosse)의 생장과 성숙 (Growth and Maturation of a Green Alga,Caulerpa okamurae Weber van Bosse)

서지정보

· 발행기관 : 한국조류학회I
· 수록지 정보 : ALGAE / 18권 / 3호 / 217 ~ 223페이지
· 저자명 : 황은경, 박찬선, 한정우, 신원준, 최창근, 손철현

초록

Seasonal growth and maturation process of Caulerpa okamurae were investigated in natural populations and in culture.
Monthly sampling was carried out by SCUBA diving at Baekunpo, Busan, southeastern coast of Korea from
November 1999 to October 2001. Growth of erect branches depended mainly on the water temperature in the natural
habitat. Maximum length of erect branches was 14.0 ± 1.4 cm in June 2001 when the water temperature was
19.7°C and minimum was 2.8±0.2 cm in April when the water temperature was 14.7°C. Fresh weight of erect
branches was 3.9 ± 0.5 g in June 2001 and 0.2 ± 0.04 g in September 2000. Biomass of the population was maximum
of 922.5 g dw·m–2 in July and minimum of 125.6 g dw·m–2 in April. Gametangial network was observed on the
ramuli when the water temperature was over 19°C in August 2000 and June 2001. In the culture regime of 4 temperatures
(15, 20, 25 and 30°C) and 3 irradiances (20, 50 and 80 μmol·m–2·s–1) combination, the maturation of excised
erect branches was mainly affected by temperature. Maturation was induced under all irradiance conditions at 20
and 25°C; under 80 μmol·m–2·s–1 at 15°C; and under 20 μmol·m–2·s–1 at 30°C. The highest rate of maturation was
64% under 20 μmol·m–2·s–1 at 25°C. These results suggested that developmental initiations of C. okamurae occurred
at higher than 13°C and maturation took about 270 degree-days.

영어초록

Seasonal growth and maturation process of Caulerpa okamurae were investigated in natural populations and in culture.
Monthly sampling was carried out by SCUBA diving at Baekunpo, Busan, southeastern coast of Korea from
November 1999 to October 2001. Growth of erect branches depended mainly on the water temperature in the natural
habitat. Maximum length of erect branches was 14.0 ± 1.4 cm in June 2001 when the water temperature was
19.7°C and minimum was 2.8±0.2 cm in April when the water temperature was 14.7°C. Fresh weight of erect
branches was 3.9 ± 0.5 g in June 2001 and 0.2 ± 0.04 g in September 2000. Biomass of the population was maximum
of 922.5 g dw·m–2 in July and minimum of 125.6 g dw·m–2 in April. Gametangial network was observed on the
ramuli when the water temperature was over 19°C in August 2000 and June 2001. In the culture regime of 4 temperatures
(15, 20, 25 and 30°C) and 3 irradiances (20, 50 and 80 μmol·m–2·s–1) combination, the maturation of excised
erect branches was mainly affected by temperature. Maturation was induced under all irradiance conditions at 20
and 25°C; under 80 μmol·m–2·s–1 at 15°C; and under 20 μmol·m–2·s–1 at 30°C. The highest rate of maturation was
64% under 20 μmol·m–2·s–1 at 25°C. These results suggested that developmental initiations of C. okamurae occurred
at higher than 13°C and maturation took about 270 degree-days.

참고자료

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