Cultivation of Gigartina skottsbergii (Gigartinales, Rhodophyta): Recent advances and challenges for the future |
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Authors: | Alejandro H. Buschmann Juan A. Correa Renato Westermeier María A. Paredes Diego Aedo P. Potin Gesica Aroca Jessica Beltrán María C. Hernández-González |
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Affiliation: | (1) Departamento de Acuicultura, Universidad de Los Lagos, Casilla 933, Osorno, Chile;(2) Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago, Chile;(3) Facultad de Pesquerías, Universidad Austral de Chile, Puerto Montt, Chile;(4) CNRS/Laboratoires Goëmar S.A. UMR 1931, Station Biologique, Places Georges teissier, BP74, F-29682 Roscoff Cedex, France |
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Abstract: | This study integrates landings statistics and biological studies of the red algaGigartina skottsbergii Setchell & Gardner. The analysis of the landings and carrageenan production in Chile suggeststhat this resource will suffer a strong harvesting pressure during the nextyears. Biological results on sporulation, germination, sporeling growth and survivorship in laboratory,indoor tanks and field conditions, indicated that cultivation of this species istechnically feasible, as spores can be seeded on ropes and other substrata. Vegetative propagation of this species through tissue fragmentationis also possible. Vegetative fragments of this carrageenophyte have 20 to30% higher growth rates than whole fronds in suspended culture systems. Protoplast production can be also explored for bypassing restrictions inspore availability. Major advantages that encourage the cultivation of G. skottsbergii include its gel quantity and quality, its pathogen-freecondition, a high reproduction potential and its regeneration capacity. Onthe other hand, the major constraints are related to its relatively slowgrowth as compared to other carrageenophytes, limited availability ofspores and high mortality during juvenile stages. |
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Keywords: | carrageenan Chile exploitation Gigartina skottsbergii indoor and outdoor cultivation protoplasts regeneration |
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