Cultivation of Chondrus canaliculatus (C. Agardh) Greville (Gigartinales, Rhodophyta) in controlled environments

Abstract

Increased market demand for algal raw materials has stimulated research and development into new cultivation technologies, particularly in countries with economically important seaweed industries. Chondrus canaliculatus is a red alga endemic to the temperate Pacific coast of South America and produces a complex carrageenan. In Chile, this potential marine resource has been underutilized since the early 1990s, after it was replaced mainly by imports of Kappaphycus and Eucheum from Asia. The study of the cultivation of C. canaliculatus in outdoor tanks demonstrates the potential to produce large quantities of algal material due to the high productivity observed. The material produced may be important in Chile as feed for cultured algal herbivores such as Haliotis spp. Data were obtained on the key factors affecting the growth of this alga, including light, temperature, and nutrient concentrations. The results showed that, on a dry weight basis, productivity varied seasonally between 40 g m -3 wk -1 in autumn and 200 g m -3 wk -1 in spring, and the optimal stocking density in our experiments was 8 kg m -3 . Effects of selfshading were among the most important limiting factors in the culture. Discussion is presented on the interactions between temperature, pH, salinity, enrichment with N and P, and water exchange on the maximal growth of C. canaliculatus in this culture.

Minerals from Macroalgae Origin: Health Benefits and Risks for Consumers

“…The nutritional properties and physicochemical composition of seaweeds are, however, very dependent on the algae species [ 14 , 15 ], location [ 16 , 17 ], seasonality [ 18 , 19 ], and cultivation conditions [ 20 , 21 ]. In this context, the aim of this work is, in a first approach, to summarize the major minerals present in red, green, and brown seaweeds from different locations along the European coast and describe their principal accumulation mechanisms.…”

An Update on the Chemical Constituents and Biological Properties of Selected Species of an Underpinned Genus of Red Algae: Chondrus

“…More research is needed to evaluate different extract types in cell and animal models to harness the full potential of this species for managing diabetes and related complications. Mazzaella canaliculata is an indigenous red marine alga species found throughout the temperate Pacific coast of South America [127]. The species can be located in the intertidal regions and are known producers of carrageenans.…”

Relationship of Trace Elements Concentration and Growth Rate in <i>Alsidium triquetrum</i> (Rhodophyta)

“…Nutritional properties and chemical composition of algae are, highly dependent on the species [6], locality [7], seasonality [8] [9] and growing conditions [10] [11]. However, the majority of studies addressing metal content in macroalgae tissue are linked to, among others, commercial important species of the genera Gracilaria [12] and Gelidium [13], on massive bloom-forming species such as Sargassum [14].…”