Culture studies on early development of Lessonia trabeculata (Phaeophyceae, Laminariales)

Seasonality and acclimation to light and temperature

Pedro Murua, Renato Westermeier, David J. Patino, Dieter G. Mueller

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Lessonia trabeculata is an important economic and ecological algal resource of Chile. Due to intense use in abalone and alginate industries, severe problems of over-harvesting are emerging. We compared sporophyte-initiation and -growth in two populations from northern and southern Chile (Bahía Inglesa and Maicolpué) under laboratory conditions. Irradiance and temperature were the most important factors affecting gametophyte development. Meiospores harvested in spring exhibited maximum reproductive and growth potential, while spores released during autumn were moribund, and died within a few days. In both study sites, we found evidence for acclimation: Meiospores collected in summer required higher levels of irradiance and temperature for maximum development than winter spores. Juvenile sporophytes from both localities responded similarly to temperature and/or irradiance. The best conditions for recruitment of sporophytes from both localities were 15°C and white fluorescent light of 40–70 μmol m−2 s−1. Although due to its low growth potential L. trabeculata is not a good candidate for mariculture, our results provide the necessary knowledge for laboratory-based seedling production, which is needed for restoration and repopulation projects in damaged areas.
Original languageEnglish
Pages (from-to)145-153
Number of pages9
JournalPhycological research
Volume61
Issue number2
Early online date23 Apr 2013
DOIs
Publication statusPublished - Apr 2013

Fingerprint

Phaeophyta
Laminariales
Phaeophyceae
Acclimatization
acclimation
irradiance
seasonality
early development
sporophytes
Chile
Spores
Light
Temperature
spore
Growth
spores
sporophyte
gametophyte
temperature
mariculture

Keywords

  • irradiance
  • Lessonia trabeculata
  • repopulation
  • reproductive success
  • seasonality
  • sporophyte growth
  • temperature

Cite this

Culture studies on early development of Lessonia trabeculata (Phaeophyceae, Laminariales) : Seasonality and acclimation to light and temperature. / Murua, Pedro; Westermeier, Renato; Patino, David J. ; Mueller, Dieter G.

In: Phycological research, Vol. 61, No. 2, 04.2013, p. 145-153.

Research output: Contribution to journalArticle

Murua, Pedro ; Westermeier, Renato ; Patino, David J. ; Mueller, Dieter G. / Culture studies on early development of Lessonia trabeculata (Phaeophyceae, Laminariales) : Seasonality and acclimation to light and temperature. In: Phycological research. 2013 ; Vol. 61, No. 2. pp. 145-153.
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