Controlled cultivation of different stages of Pyropia orbicularis (Rhodophyta; Bangiales) from the South Pacific coast
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Fecha
2023-06
Profesor/a Guía
Facultad/escuela
Idioma
en
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Editor
Elsevier B.V.
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Licencia CC
Atribution 4.0 International (CC BY 4.0)
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https://creativecommons.org/licenses/by/4.0/deed.es
Resumen
The species of the genus Pyropia have a diplohaplontic life cycle, in which there is a gametophytic phase (n) or
blade, and a microscopic sporophytic phase (2n), known as conchocelis, as well as intermediate stages of
development. Pyropia species, together with Porphyra species, belong to the group of the most commercialized
and produced macroalgae worldwide, mainly due to their high nutritional value and high content of bioactive
compounds with antioxidant and anti-inflammatory activity. The interest in cultivating and exploiting this
marine resource has increased in recent years; nevertheless, despite the development of cultivation techniques
and technologies for these species, there are still difficulties involved in their successful cultivation, mainly
related to the great interspecific and intraspecific variability in the required culture conditions. In this work, we
study the life cycle development of Pyropia orbicularis, a species endemic to the South Pacific, to determine the
effect of abiotic culture parameters, such as the temperature and photoperiod, on the formation and development
of early and late life cycle stages, such as conchocelis formation, cochoesporangial filaments, conchospore release
and blade growth. Our results demonstrate that the conchocelis phase grew rapidly under 8:16 h (L:D) photo period conditions at both 15 ◦C and 20 ◦C. The lower temperatures favored the formation of conchosporangia
and conchospores; the rate of their development was increased at 15 ◦C. The development of the blades in the
suspended culture system was constant during the experimental period, generating blades of the same color and
shape as those from natural populations. Our results reflect the adaptation of P. orbicularis to the seasonal
environmental conditions it is exposed to and the importance of maintaining optimal abiotic parameters for the
success of its culture. This work is the first to describe the full life cycle development of P. orbicularis under
controlled conditions, which has important implications for commercial production.
Notas
Indexación: Scopus.
Palabras clave
Aquaculture, Blades, Conchospore, Conchosporagia, Controlled Cultures
Citación
Aquaculture Reports. Volume 30. June 2023 . Article number 101594
DOI
10.1016/j.aqrep.2023.101594