Gracilaria verrucosa in Golfo Nuevo, Chubut, Argentina. Biological parameters and environmental factors

Zaixso, Alicia L. Boraso de

doi:10.1007/978-94-009-4057-4_36

Cited by 6 publications

(5 citation statements)

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“…According to the AlgaeBase database [34], T. marina has not been reported before from Chile; however, there is a previous report of its presence as Prasinocladus marinus, in the same area of origin of the strain described in this study, which researched behavioral responses of Concholepas concholepas larvae [53]. In South America, it has only been registered on Argentina's coast, both as Prasinocladus marinus (Cienkowski) Waern [52,54] and under its updated taxonomic label T. marina [55]. In North America, it has been reported from New Hampshire as Prasinocladus marinus [56] and from California [57,58] and Washington [57] as Tetraselmis marina.…”

Section: Discussionmentioning

confidence: 63%

“…The pedunculus is formed by the successive generation of thecae within the original cell wall of a sessile cell. The cells have the potential for mobility and can swim for a short time before settling and producing a new pedunculated colony [52]. While conducting a microscopy analysis of strain AC16-MESO, all the discussed morphological characteristics were identified.…”

Section: Discussionmentioning

confidence: 99%

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Identification and Characterization of a Novel Microalgal Strain from the Antofagasta Coast Tetraselmis marina AC16-MESO (Chlorophyta) for Biotechnological Applications

Mata,

Cameron,

Avalos

et al. 2023

Plants

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The wide rocky coastline of the Antofagasta hosts an intertidal ecosystem in which the species that inhabit it are routinely exposed to a wide range of physical and chemical conditions and have therefore evolved to tolerate extremes. In the search for new species of potential biotechnological interest with adaptations to a wide range of environmental conditions, the isolation and characterization of microalgae from these ecosystems is of great interest. Here, a new microalgal strain, Tetraselmis marina AC16-MESO, is described, which was isolated from a biofilm collected on the intertidal rocks of the Antofagasta coast (23°36′57.2″ S, 70°23′33.8″ W). In addition to the morphological characterization, 18S and ITS sequence as well as ITS-2 secondary structure analysis revealed an identity of 99.76% and 100% with the species Tetraselmis marina, respectively. The analyses of the culture characteristics and biochemical content showed similarities with other strains that are frequently used in aquaculture, such as the species Tetraselmis suecica. In addition, it is tolerant of a wide range of salinities, thus allowing its culture in water of varying quality. On the other hand, added to these characteristics, the results of the improvement of the lipid content in stressful situations of salinity observed in this study, together with other antecedents such as the potential in bioremediation already published for this strain by the same research group, present a clear example of its biotechnological plasticity. It is noteworthy that this strain, due to its characteristics, allows easy collection of its biomass by decantation and, therefore, a more cost-efficient harvesting than for other microalgal strains. Therefore, this new strain of Tetraselmis marina, first report of this species in Chile, and its morphologically, molecularly and biochemically description, presents promising characteristics for its use in biotechnology and as feed for aquaculture.

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Section: Discussionmentioning

confidence: 63%

Section: Discussionmentioning

confidence: 99%

Identification and Characterization of a Novel Microalgal Strain from the Antofagasta Coast Tetraselmis marina AC16-MESO (Chlorophyta) for Biotechnological Applications

Mata,

Cameron,

Avalos

et al. 2023

Plants

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“…The intertidal zone is exposed to terrestrial conditions for around 6 hours each tide cycle. The low, middle, and high intertidal levels are exposed up to 2, 4 and 6 hours, respectively (Boraso de Zaixso & Zaixso, 2015). Air temperature presents an annual mean of 13.4 °C with an annual amplitude reaching 40 °C and daily variations of up to 30 °C (Rechimont et al, 2013).…”

Section: Sampling Sitementioning

confidence: 99%

“…These shores, subjected to the unobstructed and persistent dry winds of "The Roaring 40 s" (Crespi et al, 2018), present a low annual rainfall (180 mm/yr) and low humidity (40%) (Bertness et al, 2006). In Patagonia, tides are semi-diurnal, with amplitudes of more than 8 m, reaching 12.5 m in some sites, exposing the intertidal for hours (Boraso de Zaixso & Zaixso, 2015). Hence as a result of the individual adaptations to these abiotic forces, the individuals present a specific position along the intertidal (biotic zonation) that determines the abundance, diversity, biomass, and species richness (Menge & Branch, 2001;Raffaelli & Hawkins, 2012).…”

Section: Introductionmentioning

confidence: 99%

Macroscopic and histological studies of different segments of the digestive tract of the Rufescent Tiger heron (Tigrisoma lineatum).

Nieto-Vilela

Márquez

Bigatti

et al. 2022

MACN

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“…The North Patagonian Gulfs of Argentina (Golfo Nuevo, Golfo San José, and Golfo San Matías (Figure ) are some of the most productive areas of the Patagonian Shelf ecosystem (Carreto et al ; Acha et al ). These gulfs are characterized by an important biodiversity, with the presence of marine mammals (Harris and García ; Crespo and Pedraza ; Bastida and Rodríguez ), marine birds (Yorio et al ), fish (Elías ), natural shellfish banks (Orensanz et al ; Amoroso et al ), and seaweed beds (Boraso and Kreibohm ). In these gulfs, blooms of toxigenic microalgae as well as the detection of their respective toxins are recurring phenomena.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Toxigenic Microalgal Species and Phycotoxin Accumulation in Mesozooplankton in Northern Patagonian Gulfs, Argentina

D'agostino

Krock

Degrati

et al. 2019

Enviro Toxic and Chemistry

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In the Northern Patagonian gulfs of Argentina (Golfo Nuevo and Golfo San José), blooms of toxigenic microalgae and the detection of their associated phycotoxins are recurrent phenomena. The present study evaluated the transfer of phycotoxins from toxigenic microalgae to mesozooplankton in Golfo Nuevo and Golfo San José throughout an annual cycle (December 2014–2015 and January 2015–2016, respectively). In addition, solid‐phase adsorption toxin tracking (SPATT) samplers were deployed for the first time in these gulfs, to estimate the occurrence of phycotoxins in the seawater between the phytoplankton samplings. Domoic acid was present throughout the annual cycle in SPATT samplers, whereas no paralytic shellfish poisoning toxins were detected. Ten toxigenic species were identified: Alexandrium catenella, Dinophysis acuminata, Dinophysis acuta, Dinophysis tripos, Dinophysis caudata, Prorocentrum lima, Pseudo‐nitzschia australis, Pseudo‐nitzschia calliantha, Pseudo‐nitzschia fraudulenta, and Pseudo‐nitzschia pungens. Lipophilic and hydrophilic toxins were detected in phytoplankton and mesozooplankton from both gulfs. Pseudo‐nitzschia spp. were the toxigenic species most frequent in these gulfs. Consequently, domoic acid was the phycotoxin most abundantly detected and transferred to upper trophic levels. Spirolides were detected in phytoplankton and mesozooplankton for the first time in the study area. Likewise, dinophysistoxins were found in mesozooplankton from both gulfs, and this is the first report of the presence of these phycotoxins in zooplankton from the Argentine Sea. The dominance of calanoid copepods indicates that they were the primary vector of phycotoxins in the pelagic trophic web. Environ Toxicol Chem 2019;38:2209–2223. © 2019 SETAC.

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Gracilaria verrucosa in Golfo Nuevo, Chubut, Argentina. Biological parameters and environmental factors

Cited by 6 publications

References 10 publications

Identification and Characterization of a Novel Microalgal Strain from the Antofagasta Coast Tetraselmis marina AC16-MESO (Chlorophyta) for Biotechnological Applications

Identification and Characterization of a Novel Microalgal Strain from the Antofagasta Coast Tetraselmis marina AC16-MESO (Chlorophyta) for Biotechnological Applications

Macroscopic and histological studies of different segments of the digestive tract of the Rufescent Tiger heron (Tigrisoma lineatum).

Occurrence of Toxigenic Microalgal Species and Phycotoxin Accumulation in Mesozooplankton in Northern Patagonian Gulfs, Argentina

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