Secondary attachment discs: a new alternative for restoring populations of Chondracanthus chamissoi (Gigartinales, Rhodophyta)

Abstract When facing the growing, international demand for the species Chondracanthus chamissoi as a source of carrageenan and for human food consumption, it is very important to generate new aquaculture techniques that allow for its repopulation, maximizing biomass yield whilst reducing the pressur...

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Autores principales:	Sáez,Felipe, Macchiavello,Juan
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	Chondracanthus chamissoi carrageenan vegetative propagation stocking growth colonization seaweed
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100140
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spelling	oai:scielo:S0718-560X20180001001402018-04-17Secondary attachment discs: a new alternative for restoring populations of Chondracanthus chamissoi (Gigartinales, Rhodophyta)Sáez,FelipeMacchiavello,Juan Chondracanthus chamissoi carrageenan vegetative propagation stocking growth colonization seaweed Abstract When facing the growing, international demand for the species Chondracanthus chamissoi as a source of carrageenan and for human food consumption, it is very important to generate new aquaculture techniques that allow for its repopulation, maximizing biomass yield whilst reducing the pressures on existing small, natural populations. This paper describes the use of secondary attachment discs (SAD) as a new vegetative propagation technique. It involves the following two stages: i) Tying the tetrasporophytic and cystocarpic fronds to natural substrates (shells and rocks), the conditions generated in the tanks allowed for quick SAD formation (12 days of experimentation), and ii) The maintenance of SAD under normal conditions (at sea for 83 days). The results indicated a quick formation of SAD, a high capacity of persistence (40%), the growth of new apices (4% d-1), quick substrate colonization through colonization discs (SADc), and the formation of reproductive structures. As a result, SAD is therefore proposed as both an innovative way to achieve the recovery of the now reduced natural beds of C. chamissoi and as an alternative to traditional methods of vegetative culturing for a species of high commercial interest.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100140en10.3856/vol46-issue1-fulltext-14
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Chondracanthus chamissoi carrageenan vegetative propagation stocking growth colonization seaweed
spellingShingle	Chondracanthus chamissoi carrageenan vegetative propagation stocking growth colonization seaweed Sáez,Felipe Macchiavello,Juan Secondary attachment discs: a new alternative for restoring populations of Chondracanthus chamissoi (Gigartinales, Rhodophyta)
description	Abstract When facing the growing, international demand for the species Chondracanthus chamissoi as a source of carrageenan and for human food consumption, it is very important to generate new aquaculture techniques that allow for its repopulation, maximizing biomass yield whilst reducing the pressures on existing small, natural populations. This paper describes the use of secondary attachment discs (SAD) as a new vegetative propagation technique. It involves the following two stages: i) Tying the tetrasporophytic and cystocarpic fronds to natural substrates (shells and rocks), the conditions generated in the tanks allowed for quick SAD formation (12 days of experimentation), and ii) The maintenance of SAD under normal conditions (at sea for 83 days). The results indicated a quick formation of SAD, a high capacity of persistence (40%), the growth of new apices (4% d-1), quick substrate colonization through colonization discs (SADc), and the formation of reproductive structures. As a result, SAD is therefore proposed as both an innovative way to achieve the recovery of the now reduced natural beds of C. chamissoi and as an alternative to traditional methods of vegetative culturing for a species of high commercial interest.
author	Sáez,Felipe Macchiavello,Juan
author_facet	Sáez,Felipe Macchiavello,Juan
author_sort	Sáez,Felipe
title	Secondary attachment discs: a new alternative for restoring populations of Chondracanthus chamissoi (Gigartinales, Rhodophyta)
title_short	Secondary attachment discs: a new alternative for restoring populations of Chondracanthus chamissoi (Gigartinales, Rhodophyta)
title_full	Secondary attachment discs: a new alternative for restoring populations of Chondracanthus chamissoi (Gigartinales, Rhodophyta)
title_fullStr	Secondary attachment discs: a new alternative for restoring populations of Chondracanthus chamissoi (Gigartinales, Rhodophyta)
title_full_unstemmed	Secondary attachment discs: a new alternative for restoring populations of Chondracanthus chamissoi (Gigartinales, Rhodophyta)
title_sort	secondary attachment discs: a new alternative for restoring populations of chondracanthus chamissoi (gigartinales, rhodophyta)
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100140
work_keys_str_mv	AT saezfelipe secondaryattachmentdiscsanewalternativeforrestoringpopulationsofchondracanthuschamissoigigartinalesrhodophyta AT macchiavellojuan secondaryattachmentdiscsanewalternativeforrestoringpopulationsofchondracanthuschamissoigigartinalesrhodophyta
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Secondary attachment discs: a new alternative for restoring populations of Chondracanthus chamissoi (Gigartinales, Rhodophyta)

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