A pilot-scale study of the vegetative propagation and suspended cultivation of the carrageenophyte alga Gigartina skottsbergii in southern Chile |
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| Authors: | Renato Westermeier David J Pati?o Pedro Murúa Juan C Quintanilla Juan Correa Alejandro H Buschmann Ismael Barros |
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| Institution: | (1) Instituto de Acuicultura, Sede Puerto Montt, Universidad Austral de Chile, Casilla 1327, Puerto Montt, Chile;(2) Departamento de Ecolog?a, Facultad de Ciencias Biol?gicas, Pontificia Universidad Cat?lica de Chile, Casilla 114 D, Santiago, Chile;(3) Centro Investigaci?n y Desarrollo en Recursos y Ambientes Costeros (i–mar), Universidad de Los Lagos, Casilla 557, Puerto Montt, Chile;(4) Escuela de Ingenier?a Comercial, Sede Puerto Montt, Universidad Austral de Chile, Casilla 1327, Puerto Montt, Chile |
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| Abstract: | Different propagation techniques for cultivation of vegetative Gigartina skottsbergii fronds were tested using a system of suspended ropes, to which inoculants were attached. Our results showed that triangular
fragments obtained from the circular G. skottsbergii thalli produced harvestable frond of 800 cm2 after 8 months. In contrast, inoculants of intact juvenile fronds of comparable size needed at least 10 months to reach the
same size. A control experiment with spores developing on an artificial substrate showed that 20 months were needed to reach
a surface of 500 cm2, confirming the superiority of our fragment culture system. A pilot study demonstrated that with a density of six fronds
m−1 of farming line, the proposed system can be economically interesting for local fishermen. |
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