A Eucheuma (Solieriaceae, rhodophyta) cultivation test on the south-west coast of Madagascar
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Abstract
Well established populations of Eucheuma denticulatum and E. striatum exist on the coral reef of the south west coast of Madagascar but natural beds are not dense enough to support high harvest pressure. A cultivation test was conducted on a 250 m2 module using the monoline method with 1560 seedlings of both species for over one year (weighings at 15 day intervals). E. denticulatum and E. striatum showed similar maximum growth rates (2.8 % d−1) occurring respectively in fall and in summer. For both species, minimum growth was observed during the warmest months (February–March). Mean growth rates, although relatively low, showed a high standard deviation, suggesting wide possibilities of strain selection. The preliminary selection experiment led to strains more resistant to breakage and having a growth rate up to 3.3 % d−1. The ‘ice-ice’ disease is also present in this area and affects the algae mainly from January to March. Mean carrageenan yield for E. denticulatum was 42.5% ± 2.3 and rheological properties were above industrial standards, with a highly elastic gel and were thus suitable for commercial applications.
Key words
seaweed Eucheuma cultivation growth rate strain selection carrageenansPreview
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References
- Adnan H. & H. Porse, 1987. Culture of Eucheuma cotton and Eucheuma spinosum in Indonesia. In M. A. Ragan & C. J. Bird (eds), Twelfth International Seaweed Symposium. Developments in Hydrobiology 41. Dr W. Junk Publishers, Dordrecht: 355–358. Reprinted from Hydrobiologia 151/152.Google Scholar
- Andriamampandry, A. V., 1976. Recherches sur quelques Rhodophycées à phycocolloïdes de l'Océan Indien occidental. Thèse 3° cycle, Univ. Paris, 105 pp.Google Scholar
- Børgesen, F., 1943. Some marine algae from Mauritius. Det Kgl. Danske Videnskabernes Selskab Biol. Med. 19: 1–85.Google Scholar
- Braud, J. P. & R. Perez, 1978. Farming on pilot scale of Eucheuma spinosum (Florideophyceae) in Djibouti waters. Proc. int. Seaweed Symp. 9: 533–539.Google Scholar
- Cosson, J., E. Deslandes & J. P. Braud, 1990. Preliminary approach to the characterization and seasonal variation of carrageenans from four Rhodophyceae on the Normandy coast (France). In S. C. Lindstrom & P. W. Gabrielson (eds), Thirteenth International Seaweed Symposium. Developments in Hydrobioloy 58. Kluwer Academic Publishers, Dordrecht: 539–544. Reprinted from Hydrobiologia 204/205.Google Scholar
- Doty, M. S., 1973. Farming red seaweed Eucheuma for carrageenans. Micronesia 9: 59–73.Google Scholar
- Fostier, A. H., 1989. Contribution à la valorisation des algues des côtes Sénégalaises productrices de iota carraghénane. Th⪻se 3° cycle, Univ. Perpignan, 219 pp.Google Scholar
- Luxton D. M., M. Robertson & M. J. Kindley, 1987. Farming of Eucheuma in the south Pacific islands of Fiji. In M. A. Ragan & C. J. Bird (eds), Twelfth International Seaweed Symposium. Developments in Hydrobiology 41. Dr W. Junk Publishers, Dordrecht: 359–362. Reprinted from Hydrobiologia 151/152.Google Scholar
- Mollion, J., M. Andriantsiferana & M. Sekkal, 1990. A study of the phycocolloids from Gelidium madagascariense and Eucheuma denticulatum (Rhodophyta) collected on the south coasts of Madagascar. In S. C. Lindstrom & P. W. Gabrielson (eds), Thirteenth International Seaweed Symposium. Developments in Hydrobioloy 58. Kluwer Academic Publishers, Dordrecht: 655–659. Reprinted from Hydrobiologia 204/205.Google Scholar
- Msigheni, K. E., 1973. Exploitation of seaweds in Tanzania: the genus Eucheuma and other algae. Tanzania Notes and Records, 72: 19–36.Google Scholar
- Rabesandratana, R. N., 1988. Contribution à la connaissance de la flore marine de la région de Tuléar (S.O. de Madagascar). Vie marine 9: 1–45.Google Scholar
- Strickland J. D. H. & T. R. Parsons, 1972. A practical handbook of seawater analysis. Fish. Res. bd of Canada, Ottawa, 310 pp.Google Scholar
- Uyenco F. R., L. S. Saniel & G. S. Jacinto, 1981. The ‘ice-ice’ problem in seaweed farming. Proc. int. Seaweed Symp. 10: 625–630.Google Scholar
- Yarish C. & G. Wamukoya, 1990. Seaweds of potential economic importance in Kenya: field survey and future prospects. In S. C. Lindstrom & P. W. Gabrielson (eds), Thirteenth International Seaweed Symposium. Developments in Hydrobiology 58. Kluwer Academic Publishers, Dordrecht: 339–346. Reprinted from Hydrobiologia 204/205.Google Scholar