Abstract
The development of kelp gametophytes is described from field collections from the San Juan Islands, Washington from November, 1997 to March 1998. All gametophytes were endophytic in the cell walls of red algae, especially species with filamentous or polysiphonous construction. Gametophyte density ranged from a few to many hundreds of distinct individuals per host plant. Gametophytes formed extensive vegetative growths of irregularly branching filaments, mostly parallel to the host surface, consisting of up to 50 or more cells. Antheridia were formed at/or just above the surface of the host thallus. The stalked egg apparatus was perpendicular to the host surface. Following presumed fertilization, the zygotes developed with typical kelp embryology to form small epiphytic blades. The specific identity of the gametophytes is unknown, although the host plants were collected from three sites where the dominant kelp species were: a) Agarum fimbriatum, b) Nereocystis luetkeana and c) Alaria marginata, Costaria costata and Laminaria groenlandica.
Similar content being viewed by others
References
Abbott, I. A. & G. J. Hollenberg, 1976. Marine Algae of California. Stanford University Press, Stanford, California, 827 pp. 252
Bold, H. C. & M. J. Wynne, 1985. Introduction to the Algae, 2nd edn. Prentice-Hall, Englewood Cliffs, N. J., 720 pp.
Burkhardt, E. & A. F. Peters, 1998. Molecular evidence from nrDNA ITS sequences that Laminariocolax(Phaeophyceae, Ectocarpales sensu lato) is a worldwide clade of closely related kelp endophytes. J. Phycol. 34: 682–691.
Chapman, A. R. O., 1984. Reproduction, recruitment and mortality in two species of Laminariain southwest Nova Scotia. J. exp. mar. Biol. Ecol. 78: 99–109.
Cole, K., 1968. Gametophytic development and fertilization in Macrocystis pyrifera. Can. J. Bot. 46: 777–782.
Dube, M. A. & E. Ball, 1971. Desmarestiasp. associated with the sea pen Ptilosarcus gurneyi(Gray). J. Phycol. 7: 218–220.
Funano, T., 1969. Observation on the female gametophytes and the microscopic sporophytes of Laminaria religiosaMiyabe. Rep. Hokkaido Fish. exp. Sta. 10: 43–50.
Garbary, D., G. I. Hansen & R. F. Scagel, 1982. The marine algae of British Columbia and northern Washington: Division Rhodophyta (red algae), Class Florideophyceae, Orders Acrochaetiales and Nemaliales. Syesis 15 (supplement): 1–102.
Graham, M. H. & B. G. Mitchell, 1999. Obtaining absorption spectra from individual macroalgal spores using microphotometry. Hydrobiologia 398/399 (Dev. Hydrobiol. 137): 231–239.
Henry, E. C., 1987. Primitive reproductive characters and a photoperiodic response in Saccorhiza dermatodea(Laminariales, Phaeophyceae). Brit. phycol J. 22: 23–31.
Henry, E. C. & K. M. Cole, 1982. Ultrastructure of swarmers in the Laminariales (Phaeophyceae). II. Sperm. J. Phycol. 18: 570–579.
Hollenberg, G. J., 1939. Culture studies of marine algae. I. Eisenia arborea. Am. J. Bot. 26: 34–41.
Hsiao, S. I. C. & L. D. Druehl, 1973. Environmental control of gametogenesis in Laminaria saccharina. IV. In situdevelopment of gametophytes and young sporophytes. J. Phycol. 9: 160–164.
Kain, J. M., 1964. Aspects of the biology of Laminaria hyperboreaIII. Survival and growth of gametophytes. J. mar. biol. Ass. U. K. 44: 415–433.
Kain, J. M., 1979. A view of the genus Laminaria. Oceanogr. mar. Biol. ann. Rev. 17: 101–161.
Kaneko, T., 1973. Morphology of the female gametophyte and the young sporophyte of Laminaria japonicavar. ochotensisOkamura in nature. Sci. Rep. Hokkaido Fish. exp. Sta. 15: 1–8.
Kawai, H. & M. Kurogi, 1985. On the life history of Pseudochorda nagaii(Pseudochordaceae fam. nov.) and its transfer from the Chordariales to the Laminariales (Phaeophyta). Phycologia 24: 289–296.
Lüning, K., 1980. Critical levels of light and temperature regulating the gametogenesis of three Laminariaspecies. J. Phycol. 16: 1–15.
Lüning, K. & M. Neushul, 1978. Light and temperature demands for growth and reproduction of laminarian gametophytes in southern and central California. Mar. Biol. 45: 297–309.
Maier, I., 1984. Culture studies of Chorda tomentosa(Phaeophyta, Laminariales). Brit. phycol. J. 19: 95–106.
Moe, R. L. & P. C. Silva, 1989. Desmarestia antarctica(Desmarestiales, Phaeophyceae), a new ligulate Antarctic species with an endophytic gametophyte. Pl. Syst. Evol. 164: 273–283.
Motomura, T. & Y. Sakai, 1988. The occurrence of flagellated stages in Laminaria angustata(Phaeophyta, Laminariales). J. Phycol. 24: 282–285.
Nielsen, R. & J. McLachlan, 1986. Investigations of the marine algae of Nova Scotia. XVI. The occurrence of small green algae. Can. J. Bot. 64: 808–814.
Parke, M. W., 1932. Port Erin: report of the algologist. Rep. mar. biol. St. Port Erin 45: 18–21.
Reed, D. C., D. R. Laur & A. W. Ebeling, 1988. Variation in algal dispersal and recruitment: the importance of episodic events. Ecol. Monogr. 58: 321–335.
Sakai, Y. & T. Funano, 1964. Observation on the female gametophytes and the microscopic sporophytes of Laminaria religiosafrom Oshoro Bay, Hokkaido, Japan. Sci. Rep. Hokkaido Fish. exp. Sta. 2: 1–6.
Sauvageau, C., 1915. Sur le développement et la biologie d'une Laminaire (Saccorhiza bulbosa). C. R. Hebd. Séanc. Acad Sci., Paris. 160: 445–448.
Sauvageau, C., 1918. Recherches sur les laminaires des côtes de France. Mém. Acad. Sci. Inst. Fr. 56: 1–240.
Tan, I. H. & L. D. Druehl, 1996. A ribosomal DNA phylogeny supports the close evolutionary relationships among Sporochnales, Desmarestiales, and Laminariales (Phaeophyceae). J. Phycol. 32: 112–118.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Garbary, D.J., Young Kim, K., Klinger, A. et al. Preliminary observations on the development of kelp gametophytes endophytic in red algae. Hydrobiologia 398, 247–252 (1999). https://doi.org/10.1023/A:1017083711734
Issue Date:
DOI: https://doi.org/10.1023/A:1017083711734