Journal of Applied Phycology

, Volume 7, Issue 6, pp 539–543 | Cite as

Laboratory-induced development of the ice-ice disease of the farmed red algae Kappaphycus alvarezii and Eucheuma denticulatum (Solieriaceae, Gigartinales, Rhodophyta)

  • Danilo B. Largo
  • Kimio Fukami
  • Toshitaka Nishijima
  • Masao Ohno
Article

Abstract

The most common perception of unfavorable environmental factors causing the ice-ice disease in the farmed seaweeds, Kappaphycus and Eucheuma, was demonstrated in this study for the first time using stressful conditions of abiotic factors in a continuous culture system. Light intensity of less than 50 μmol photon m−2 s−1 and salinity of 20% or less induced ice-ice whitening characterized by short segments at midbranches which were similar to those observed in the Philippine seaweed farms, while temperatures of up to 33–35 °C resulted in wide-scale whitening leading to complete damage of the branches. These effects were preceded by slow growth rates from an optimum of 3.7% d−1 to almost −2.0% d−1. Mechanical stress by wound injury did not result to ice-ice whitening similar to the above. Environmental factors observed to trigger ice-ice in the laboratory, although may not necessarily parallel those in the field, may act synergestically to produce similar effects.

Key words

ice-ice disease environmental factors Kappaphycus/Eucheuma seaweed farming Philippines 

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References

  1. Andrews JH (1979) Pathology of seaweeds: current status and future prospects. Experientia 35: 429–570.Google Scholar
  2. Azansa-Corrales R, Dawes CJ (1989) Wound healing in cultured Eucheuma alvarezii var tambalang Doty. Bot. mar. 32: 229–234.Google Scholar
  3. Dawes CJ, Koch EW (1991) Branch, micropropagule and tissue culture of the red algae Eucheuma denticulatum and Kappaphycus alvarezii farmed in the Philippines. J. appl. Phycol. 3: 247–257.Google Scholar
  4. Doty MS, Alvarez VB (1975) Status, problems, advances and economics of Eucheuma farms. Mar. Tech. Soc. J. 9: 30–35.Google Scholar
  5. Fishery Statistics Bulletin (1992) Bureau of Agricultural Statistics, Department of Agriculture, Republic of the Philippines, 17 pp.Google Scholar
  6. Ganzon-Fortes ET, Corrales R, Aliaza T (1993) Comparison of photosynthetic responses of healthy and ‘diseased’ Kappaphycus alvarezii (Doty) Doty using P vs I curve. Bot. mar. 36: 503–506.Google Scholar
  7. Ohno M (1977) Effect of temperature on the growth rate of seaweeds in an aquatron culture system. Bull. Jap. Soc. Phycol. 25 (Suppl.): 257–263.Google Scholar
  8. Ohno M, Largo DB, Ikumoto T (1994) Growth rate, carrageenan yield and gel properties of cultured kappa-carrageenan producing red alga Kappaphycus alvarezii (Doty) Doty in the subtropical waters of Shikoku, Japan. J. appl. Phycol. 6: 1–5.Google Scholar
  9. Trono GC, Ohno M (1989) Seasonality in the biomass production of the Eucheuma strains in northern Bohol, Philippines. In Umezaki I (ed.), Scientific Survey of Marine Algae and Their Resources in the Philippine Islands. Technical Report, Monbusho International Scientific Research Program, Japan, pp. 71–80.Google Scholar
  10. Trono GC Jr (1993) Effects of biological, physical and socio-economic factors on the productivity of Eucheuma/Kappaphycus farming industry. In Calumpong HP, MenezEG (eds), Proc. Second RP-USA Phycol. Symp./Workshop, Philippines, pp. 239–245.Google Scholar
  11. Uyenco FR, Saniel LS, Gomez ED (1977) Microbiology of diseased Eucheuma striatum Schmitz. J. Phycol. 13: 70 (Abstract only).Google Scholar
  12. Uyenco FR, Saniel LS, Jacinto GS (1981) The ice-ice problem in seaweed farming. In Levring T (ed.), Proc. Tenth Int. Seaw. Symp. Walter de Gruyter & Co., Berlin: 625–630.Google Scholar

Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • Danilo B. Largo
    • 1
  • Kimio Fukami
    • 1
  • Toshitaka Nishijima
    • 1
  • Masao Ohno
    • 2
  1. 1.Laboratory of Aquatic Environmental Science, Department of Aquaculture, Faculty of AgricultureKochi UniversityNankoku City, KochiJapan
  2. 2.Usa Marine Biological Institute, Kochi UniversityTosa City, KochiJapan

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