Article
Fisheries
Sebastian Oyarzo, Marcela Avila, Paula Alvear, Jean Pierre Remonsellez, Loretto Contreras-Porcia, Cristian Bulboa
Summary: In this study, the productivity of an outdoor cultivation system using secondary attachment discs (SADs) of Chondracanthus chamissoi was evaluated. It was found that utilizing fiberglass as the substrate was the most suitable choice, as it increased the survival rate of SADs and improved the growth of seaweeds within the tanks.
Article
Fisheries
Hector Basaure, Juan Macchiavello, Cristian Sepulveda, Felipe Saez, David Yanez, Lorena Vega, Cristian Marin
Summary: Seaweed exploitation in Chile has increased in recent decades, leading to a decline in seaweed landings and overharvesting of natural beds. To address this issue, ecological baselines for sustainable exploitation and the development of seaweed aquaculture have been implemented. Experimental cultivation of the commercial red seaweed Chondracanthus chamissoi has shown growth under different treatments, with variations in biomass yields and the length of new thalli observed across seasons.
AQUACULTURE RESEARCH
(2021)
Article
Plant Sciences
Feresa P. Cabrera, John M. Huisman, Heather L. Spalding, Randall K. Kosaki, Alison R. Sherwood
Summary: Two new taxa of small red blades belonging to the genera Psaromenia and Meredithia were discovered, and described as new species within the family Kallymeniaceae. Psaromenia laulamaula sp. nov. is found exclusively at mesophotic depths, while Meredithia hawaiiensis sp. nov. occurs in both shallow and mesophotic depths with high morphological plasticity. This study provides additional evidence of poorly characterized diversity in the Kallymeniaceae from mesophotic depths and highlights overlooked biodiversity within the macroalgal flora.
EUROPEAN JOURNAL OF PHYCOLOGY
(2022)
Article
Plant Sciences
Wendy A. Nelson, Kate F. Neill, Maren Preuss, Judy E. Sutherland
Summary: The carrageenophyte red alga Sarcothalia radula (previously known as Gigartina radula) is a safe source of carrageenan hydrocolloid and a food additive, as well as a potential source of compounds for various commercial applications. However, the type material and type locality of the species has been unclear. This study discusses the possible collection location and argues that it was collected during Captain Cook's second voyage to southern New Zealand. The study also designates a lectotype and an epitype.
Article
Marine & Freshwater Biology
Masahiro Suzuki, Ryuta Terada, Kensuke Shibata, Hiroshi Kawai
Summary: This study reports the first discovery of two red algal species in Japan, Chondracanthus saundersii and Schottera koreana. Chondracanthus saundersii is characterized by secondary attachments and a looser medulla, while Schottera koreana is defined by unicellular colorless hair developed from cortical cells.
PHYCOLOGICAL RESEARCH
(2021)
Article
Plant Sciences
Oscar Hernandez, Kurt M. Dreckmann, Maria Luisa Nunez Resendiz, Abel Senties
Summary: The study identified distribution patterns of Solieriaceae species in Mexico, revealing congruent areas in the Pacific and Atlantic oceans, as well as areas of endemism. The complexity of Mexican coasts was recognized, and future conservation proposals should incorporate phylogenetic information into evolutionary biogeographic schemes.
ACTA BOTANICA MEXICANA
(2021)
Article
Fisheries
La Ode Muhammad Aslan, Aldi La Embi, Rahmat Hasriah, Ardin Ansa, Wa Iba, Andi Besse Patadjai, Manat Rahim, Armin
Summary: The study attempted to graft Kappaphycus alvarezii in Southeast Sulawesi, Indonesia, and found that intra-generic grafting using the straight-slipped position method had a higher success rate, while the side-slipped position method was slower.
AQUACULTURE RESEARCH
(2021)
Article
Fisheries
Natalia Arakaki, Sigfried Suarez-Alarcon, Diego Marquez-Corigliano, Patricia Gil-Kodaka, Florence Tellier
Summary: Research has shown that C. chamissoi and C. glomeratus form a taxonomic entity with high morphological variability, with clear differences in morphological characteristics but no genetic differentiation at the molecular level, which may be of interest for future aquaculture development.
JOURNAL OF THE WORLD AQUACULTURE SOCIETY
(2021)
Article
Plant Sciences
Conxi Rodriguez-Prieto, Jordi Morcillo
Summary: This study reveals the development process of carpogonial and auxiliary fusion cells in different genera such as Dudresnaya (Dumontiaceae, Gigartinales) and Acrosymphyton (Acrosymphytaceae, Acrosymphytales). The existence of primary auxiliary fusion cells prior to diploidization in both species is assessed, and occasional procarpic behavior is observed. The findings contribute to a better understanding of post-fertilization processes and support the hypothesis that procarpic behavior is derived from non-procarpic ancestors.
Article
Plant Sciences
Mitsunobu Kamiya, Naoto Inoue, Chika Suzuki, Shin-ichiro Abe
Summary: In the study of Chondrus ocellatus, it was found that the ratio of gametophytes to sporophytes varied among different habitats, with significant differences in water retention ability and growth rates between the two phases. Sporophytic blades were found to be less stiff and more flexible, with faster-growing germlings, advantages that allow for colonization in wave-swept intertidal habitats. These biomechanical and physiological differences likely contribute to the unequal ratio of gametophytes to sporophytes observed in different environmental conditions.
JOURNAL OF PHYCOLOGY
(2021)
Article
Plant Sciences
Michael Y. Roleda, Zae-Zae A. Aguinaldo, Bea A. Crisostomo, Lourie Ann R. Hinaloc, Vicenta Z. Projimo, Richard Dumilag, Arturo O. Lluisma
Summary: This study revealed the morphological and genetic diversity of wild Kappaphycus species in the Philippines, identifying multiple novel haplotypes with potential for developing new cultivars. The DNA barcodes generated in this study contribute to expanding the existing databank of Kappaphycus sequences and provide insights into the genetic diversity of Kappaphycus species in the country.
Article
Biotechnology & Applied Microbiology
Eduardo de Oliveira Bastos, Paulo Antunes Horta, Leila Hayashi
Summary: The study investigated the feasibility of strain selection using tetraspore and carpospore progeny from wild fronds of Chondracanthus teedei to obtain strains with specific characteristics like high growth rates, temperature tolerance, and high yield of native carrageenan. A total of 34 strains were isolated, showing heterogeneity in morphology, growth rate, and response to temperature among other traits. Most strains exhibited optimal growth rates at 25 degrees Celsius, with some strains performing best at extreme temperatures. Combining different strains in various seasons could lead to greater stability in biomass production and carrageenan yield.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Penuela Ana, Bourgougnon Nathalie, Bedoux Gilles, Robledo Daniel, Madera-Santana Tomas, Freile-Pelegrin Yolanda
Summary: This study investigated the use of environmentally friendly extraction methods to obtain bioactive compounds from Solieria filiformis. The 2:1 PRO:AMG combination showed the highest extraction yields and antiviral activity, suggesting its potential for promoting hydrolytic breakdown of high molecular weight polysaccharides and enhancing bioactivity of the extracts. Further research, including separation and purification techniques, is needed to explore the full potential of these extracts.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Environmental Sciences
Joseph Richards, Ronald P. Kittle, William E. Schmidt, Thomas Sauvage, Carlos F. D. Gurgel, Daniela Gabriel, Suzanne Fredericq
Summary: Historical identification of non-geniculate coralline algae in the northwestern Gulf of Mexico was based on morpho-anatomy. Recent studies combining DNA sequencing and SEM have discovered previously undocumented diversity of non-geniculate coralline algae in mesophotic hard bank communities. However, total diversity estimates are still incomplete and more species are yet to be described.
FRONTIERS IN MARINE SCIENCE
(2022)
Review
Plant Sciences
Rennielyn Rupert, Kenneth Francis Rodrigues, Vun Yee Thien, Wilson Thau Lym Yong
Summary: Carrageenan, a polysaccharide derived from red algae, has significant economic potential in various industries. The most common source of carrageenan is Kappaphycus alvarezii, which is primarily farmed in Asian countries such as Indonesia, the Philippines, Vietnam, and Malaysia. Carrageenan extracted from K. alvarezii has received attention due to its economic potential and wide range of applications.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Fisheries
Sebastian Oyarzo, Marcela Avila, Paula Alvear, Jean Pierre Remonsellez, Loretto Contreras-Porcia, Cristian Bulboa
Summary: In this study, the productivity of an outdoor cultivation system using secondary attachment discs (SADs) of Chondracanthus chamissoi was evaluated. It was found that utilizing fiberglass as the substrate was the most suitable choice, as it increased the survival rate of SADs and improved the growth of seaweeds within the tanks.
Article
Environmental Sciences
Andres Meynard, Camila Espinoza-Gonzalez, Alejandra Nunez, Francisco Castaneda, Loretto Contreras-Porcia
Summary: This study investigated the effects of heavy metals and polycyclic aromatic hydrocarbons on two key kelp species in the Valparaiso Region of Chile, and found that the mixtures of these toxicants may have a more severe impact on kelps compared to individual toxicants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Review
Chemistry, Medicinal
Florentina Pina, Loretto Contreras-Porcia
Summary: This study identified the significant effects of salinity and wavelength treatment on the synthesis of xanthophylls in red alga species, while also comparing the differences between different species in terms of carotenoid content.
Article
Biotechnology & Applied Microbiology
Camila Espinoza-Gonzalez, Andres Meynard, Alejandra Nunez, Francisco Castaneda, Carolina Oyarzo-Miranda, Nicolas Latorre-Padilla, Jorge Rivas, Loretto Contreras-Porcia
Summary: The study aimed to evaluate the effects of Cu and PAHs on early development stages of kelps in central Chile, finding that Cu was more sensitive to gametogenesis while PAHs were more sensitive to sporophyte formation. The combined effects of Cu and PAHs were found to be the most harmful and rapid on the microscopic stages of kelps, emphasizing the importance of understanding the seasonal variation of pollutants and their combination on highly intervened coasts.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Fisheries
Natalia Arakaki, Sigfried Suarez-Alarcon, Diego Marquez-Corigliano, Patricia Gil-Kodaka, Florence Tellier
Summary: Research has shown that C. chamissoi and C. glomeratus form a taxonomic entity with high morphological variability, with clear differences in morphological characteristics but no genetic differentiation at the molecular level, which may be of interest for future aquaculture development.
JOURNAL OF THE WORLD AQUACULTURE SOCIETY
(2021)
Article
Environmental Sciences
Nicolas Latorre-Padilla, Andres Meynard, Fernanda X. Oyarzun, Loretto Contreras-Porcia
Summary: The study revealed that sea urchins fed with polluted kelps from highly impacted zones showed lower growth rates and gamete release compared to those fed with non-impacted kelps. Additionally, the polluted kelps caused developmental delays and an increase in malformed larvae, indicating that pollutants ingested by sea urchins can be transferred to their offspring, negatively impacting their early development and categorizing Macrocystis pyrifera as a pollutant carrier.
MARINE POLLUTION BULLETIN
(2021)
Article
Nutrition & Dietetics
Claudio Pinto, Maria Raquel Ibanez, Gloria Loyola, Luisa Leon, Yasmin Salvatore, Carla Gonzalez, Victor Barraza, Francisco Castaneda, Rebeca Aldunate, Loretto Contreras-Porcia, Karen Fuenzalida, Francisca C. Bronfman
Summary: The edible red seaweed Agarophyton chilense has the potential to be a good source of natural PPAR gamma ligands and antioxidants, which could help mitigate metabolic disorders.
Article
Environmental Sciences
Roddy Jara-Yanez, Andres Meynard, Gladys Acosta, Nicolas Latorre-Padilla, Carolina Oyarzo-Miranda, Francisco Castaneda, Florentina Pina, Jorge Rivas, Cristian Bulboa, Loretto Contreras-Porcia
Summary: The study of pollution effects in the marine environment has become increasingly important in recent decades, with a focus on the impact of exposure to multiple pollutants. Research shows that Macrocystis pyrifera exposed to a mixture of heavy metals and polycyclic aromatic hydrocarbons experienced negative effects on growth and morphology. Additionally, the associated community structure, including M. pyrifera grazers, also suffered from low richness and diversity due to the pollution pulse.
Article
Biochemistry & Molecular Biology
Jorge Rivas, Florentina Pina, Matias Araya, Nicolas Latorre-Padilla, Benjamin Pinilla-Rojas, Sofia Caroca, Francisca C. Bronfman, Loretto Contreras-Porcia
Summary: This study demonstrated the successful utilization of controlled outdoor cultures in removing heavy metal accumulation in Gracilaria chilensis, highlighting the importance of controlled aquaculture in improving seaweed biomass quality.
Review
Environmental Sciences
Carolina Oyarzo-Miranda, Ricardo Otaiza, Alexis Bellorin, J. M. Alonso Vega, Fadia Tala, Nelson A. Lagos, Fernanda X. Oyarzun, Rodrigo A. Estevez, Nicolas Latorre-Padilla, Ana Maria Mora Tapia, Luis Figueroa-Fabrega, Roddy Jara-Yanez, Cristian Bulboa, Loretto Contreras-Porcia
Summary: Several seaweed species are widely commercialized globally due to their demand in food, feed, and the extraction of phycocolloids. Chile is the leading producer, but overexploitation has caused a decrease in natural stocks. Various strategies have been implemented to restore seaweed stocks, with varying success rates. However, technological improvements are needed to develop cost-effective restocking strategies that are scalable, transferable, and socio-ecologically sustainable.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Plant Sciences
Loretto Contreras-Porcia, Andres Meynard, Florentina Pina, Manoj Kumar, Carlos Lovazzano, Alejandra Nunez, Maria Rosa Flores-Molina
Summary: The tolerance strategies to desiccation stress of Porphyra and Pyropia species differ among populations inhabiting different latitudes. The intertidal plants from the northern region of Chile show stronger antioxidant enzyme activities and transcriptional activities, higher lipoperoxide and carbonyl contents compared to those from the southern region.
Article
Plant Sciences
Sofia Caroca-Valencia, Jorge Rivas, Matias Araya, Alejandra Nunez, Florentina Pina, Fernanda Toro-Mellado, Loretto Contreras-Porcia
Summary: Taking climate change, marine contamination, and global population growth into consideration, seaweed aquaculture has become an important option for large-scale production of high-quality biomass. This research applied indoor and outdoor cultivation methodologies to generate high biomass of G. chilensis with positive quality, determined by concentrations of lipoperoxides, phenolic compounds, and total antioxidant capacity. The results showed that G. chilensis cultures fertilized with Basfoliar(R) Aktiv (BF) obtained high biomass, low lipoperoxides, and high phenolic compounds and TAC compared to other culture media.
Article
Fisheries
Florentina Pina, Alejandra Nunez, Matias Araya, Jorge Rivas, Constanza Hernandez, Cristian Bulboa, Loretto Contreras-Porcia
Summary: This study describes for the first time the complete life cycle development of the endemic species Pyropia orbicularis under controlled conditions, and demonstrates the significant effect of temperature and photoperiod on the formation and development of early and late life cycle stages. These findings have important implications for the commercial production of this species.
AQUACULTURE REPORTS
(2023)
