Abstract
Photosynthetic rates were compared between Ecklonia cava bladelets with and without zoosporangial sori sampled from the subtidal zone (about 5 m deep) in Nabeta Bay, Shimoda, Japan. Photosynthetic rates of bladelets were lower in the sorus portion than in the non-sorus portion on the basis of area, dry weight and chlorophyll a. Respiration rates were higher in the sorus portion than in the non-sorus portion on the basis of area and chlorophyll a, whereas they were almost the same on a dry weight basis. The differences were mainly due to a large difference in dry weight per unit bladelet area between the sorus and the non-sorus portion. Light compensation points were higher in the sorus portion than in the non-sorus portion.
Similar content being viewed by others
References
Aruga, Y., 1981. Physiological characteristics of Eisenia bicyclis and Ecklonia cava. In Y. Saito (ed.), Marine Ranching Program Annual Report 1980. Nansei Regional Fisheries Laboratory, Ohnocho, Hiroshima-ken: 29–34 (in Japanese).
Haroun, R. J., Y. Yokohama & Y. Aruga, 1989a. Annual growth cycle of the brown alga Ecklonia cava in central Japan. Proc. eur. mar. Biol. Symp. 22: (in press).
Haroun, R. J., Y. Aruga and Y. Yokohama, 1989b. Photosynthetic properties of Ecklonia cava Kjellman blade in Nabeta Bay (Shimoda, central Japan). Proc. eur. mar. Biol. Symp. 23: (in press).
Hayashida, F., 1977. On age and growth of a brown alga, Ecklonia cava Kjellman, forming aquatic forest. Bull. Jap. Soc. Sci. Fish. 43: 1044–1051 (in Japanese with English summary).
Hayashida, F., 1984. Synecological studies of a brown alga, Ecklonia cava Kjellman, forming aquatic forest — II. On growth of Ecklonia cava. J. Fac. mar. Sci. Technol. Tokai Univ. 18: 275–280 (in Japanese with English summary).
Hayashida, F., 1986. Synecological studies of a brown alga, Ecklonia cava Kjellman, forming aquatic forest — III. Structure of Ecklonia cava population. J. Fac. mar. Sci. Technol. Tokai Univ. 22: 159–169 (in Japanese with English summary).
Iwahashi, Y., 1968a. Ecological studies on Eisenia and Ecklonia in the coast of Izu Peninsula — I. On the growth of Ecklonia cava Kjellman. Bull. Shizuoka Pref. Fish. exp. Sta. 1: 27–31 (in Japanese).
Iwahashi, Y., 1968b. Ecological studies on Eisenia and Ecklonia in the coast of Izu Peninsula — II. Seasonal variation of weight of Ecklonia cava Kjellman. Bull. Shizuoka Pref. Fish. exp. Sta. 1: 33–36 (in Japanese).
Iwahashi, Y., S. Inaba, H. Fushimi, T. Sasaki & H. Ohsuga, 1979. Ecological studies on Eisenia and Ecklonia in the coast of Izu Peninsula — IV. The distribution and characteristics of kelp stand. Bull. Shizuoka Pref. Fish. exp. Sta. 13: 75–82 (in Japanese).
Kasahara, H. & M. Ohno, 1983. Physiological ecology of brown alga, Ecklonia on the coast of Tosa Bay, southern Japan III. Growth and morphological change. Rep. mar. Biol. Inst. Kochi Univ. 5: 77–84 (in Japanese with English summary).
Kida, W. & M. Maegawa, 1982. Ecological studies on Eisenia bicyclis and Ecklonia cava communities — I. Distribution and composition of the community around the coast of Cape Goza, Shima Peninsula. Rep. Fish. Res. Lab. Mie Univ. 3: 41–54 (in Japanese with English summary).
Kida, W. & M. Maegawa, 1983. Ecological studies on Eisenia bicyclis and Ecklonia cava communities — II. Distribution and composition of the community in the coastal areas of Kumano-nada. Bull. Fac. Fish. Mie Univ. 10: 57–69 (in Japanese with English summary).
Maegawa, M. & W. Kida, 1984. Ecological studies on Eisenia bicyclis and Ecklonia cava communities — IV. Seasonal change in allometric relation of Ecklonia frond. Bull. Fac. Fish. Mie Univ. 11: 199–206 (in Japanese with English summary).
Maegawa, M., Y. Yokohama & Y. Aruga, 1987. Critical light condition for young Ecklonia cava and Eisenia bicyclis with reference to photosynthesis. Proc. int. Seaweed Symp. 12: 447–455.
Maegawa, M., W. Kida, Y. Yokohama & Y. Aruga, 1988a. Comparative studies on critical light conditions for young Eisenia bicyclis and Ecklonia cava. Jap. J. Phycol. 36: 166–174.
Maegawa, M., W. Kida & Y. Aruga, 1988b. A demographic study of the sublittoral brown alga Ecklonia cava Kjellman in coastal water of Shima Peninsula, Japan. Jap. J. Phycol. 36: 321–327.
Monsi, M. & T. Saeki, 1953. Über den Lichtfaktor in den Pflanzengesellschaften und seine Bedeutung für die Stoffproduktion. Jap. J. Bot. 14: 22–52.
Ohno, M. & M. Ishikawa, 1982. Physiological ecology of brown alga, Ecklonia on coast of Tosa Bay, southern Japan. I. Seasonal variation of Ecklonia bed. Rep. Usa mar. Biol. Inst. 4: 59–73 (in Japanese).
Sakanishi, Y., Y. Yokohama & Y. Aruga, 1988. Photosynthesis measurement of blade segments of brown algae Ecklonia cava Kjellman and Eisenia bicyclis Setchell. Jap. J. Phycol. 36: 24–28.
Sakanishi, Y., Y. Yokohama & Y. Aruga, 1989. Seasonal changes of photosynthetic activity of a brown alga Ecklonia cava Kjellman. Bot. Mag. Tokyo 102: 37–51.
SCOR-Unesco Working Group 17, 1966. Determination of photosynthetic pigments. Unesco Monogr. Oceanogr. Methodol. 1: 9–18.
Yokohama, Y., 1977. Productivity of seaweeds. In K. Hogetsu, M. Hatanaka, T. Hanaoka & T. Kawamura (eds) Productivity of Biocenoses in Coastal Regions of Japan. Univ. of Tokyo Press, Tokyo: 119–127.
Yokohama, Y. & S. Ichimura, 1969. A new device of differential gas-volumeter for ecological studies on small aquatic organisms. J. oceanogr. Soc. Japan 25: 75–80.
Yokohama, Y., N. Katayama & K. Furuya, 1986. An improved type of ‘Productmeter’, a differential gas-volumeter, and its application to measuring photosynthesis of seaweeds. Jap. J. Phycol. 34: 37–42 (in Japanese with English summary).
Yokohama, Y., J. Tanaka & M. Chihara, 1987. Productivity of the Ecklonia cava community in a bay of Izu Peninsula on the Pacific coast of Japan. Bot. Mag. Tokyo 100: 129–141.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Aruga, Y., Toyoshima, M. & Yokohama, Y. Comparative photosynthetic studies of Ecklonia cava (Laminariales, Phaeophyta) bladelets with and without zoosporangial sori. Hydrobiologia 204, 473–477 (1990). https://doi.org/10.1007/BF00040273
Issue Date:
DOI: https://doi.org/10.1007/BF00040273