Harmful phytoplankton in the Beagle Channel (South America) as a potential threat to aquaculture activities

Gaston O. Almandoz; Adrian O. Cefarelli; Soledad Diodato; Nora G. Montoya; Hugo R. Benavides; Mario Carignan; Marcelo Hernando; Elena Fabro; Katja Metfies; Nina Lundholm; Irene R. Schloss; Marcela Alvarez; Martha E. Ferrario

doi:10.1016/j.marpolbul.2019.05.026

Harmful phytoplankton in the Beagle Channel (South America) as a potential threat to aquaculture activities

Gaston O. Almandoz, Adrian O. Cefarelli, Soledad Diodato, Nora G. Montoya, Hugo R. Benavides, Mario Carignan, Marcelo Hernando, Elena Fabro, Katja Metfies, Nina Lundholm, Irene R. Schloss, Marcela Alvarez, Martha E. Ferrario

6 Citations (Scopus)

Abstract

The Beagle Channel is a remote subantarctic environment where mussel aquaculture initiatives have existed since the early 1990s. Here we analyze phytoplankton biomass and composition, and the occurrence of harmful microalgae species and their toxins at three sites during the period 2015–2016. The occurrence of potentially harmful algae was observed throughout the study period, including toxigenic dinoflagellates such as Alexandrium catenella (Group I of the A. tamarense complex), A. ostenfeldii, Dinophysis acuminata, Gonyaulax spinifera, Azadinium sp., and the diatoms Pseudo-nitzschia australis and P. fraudulenta. Toxic dinoflagellates were detected in low densities whereas a Pseudo-nitzschia bloom was observed in late February. Isolates of A. catenella and P. delicatissima sensu stricto were phylogenetically characterized. The toxin profile of A. catenella was dominated by GTX4, while P. delicatissima sensu stricto showed no production of the neurotoxin domoic acid in culture conditions. The results provide base-line information for the management of harmful algal blooms in this little explored subantarctic area.

Original language	English
Journal	Marine Pollution Bulletin
Volume	145
Pages (from-to)	105-117
ISSN	0025-326X
DOIs	https://doi.org/10.1016/j.marpolbul.2019.05.026
Publication status	Published - Aug 2019

Keywords

Harmful algae
Alerandrium
Pseudo-nitzschia
Toxin analyses
Phaeocystis-like bloom
Beagle Channel

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10.1016/j.marpolbul.2019.05.026

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Almandoz, G. O., Cefarelli, A. O., Diodato, S., Montoya, N. G., Benavides, H. R., Carignan, M., Hernando, M., Fabro, E., Metfies, K., Lundholm, N., Schloss, I. R., Alvarez, M., & Ferrario, M. E. (2019). Harmful phytoplankton in the Beagle Channel (South America) as a potential threat to aquaculture activities. Marine Pollution Bulletin, 145, 105-117. https://doi.org/10.1016/j.marpolbul.2019.05.026

Almandoz, GO, Cefarelli, AO, Diodato, S, Montoya, NG, Benavides, HR, Carignan, M, Hernando, M, Fabro, E, Metfies, K, Lundholm, N, Schloss, IR, Alvarez, M & Ferrario, ME 2019, 'Harmful phytoplankton in the Beagle Channel (South America) as a potential threat to aquaculture activities', Marine Pollution Bulletin, vol. 145, pp. 105-117. https://doi.org/10.1016/j.marpolbul.2019.05.026

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title = "Harmful phytoplankton in the Beagle Channel (South America) as a potential threat to aquaculture activities",

abstract = "The Beagle Channel is a remote subantarctic environment where mussel aquaculture initiatives have existed since the early 1990s. Here we analyze phytoplankton biomass and composition, and the occurrence of harmful microalgae species and their toxins at three sites during the period 2015–2016. The occurrence of potentially harmful algae was observed throughout the study period, including toxigenic dinoflagellates such as Alexandrium catenella (Group I of the A. tamarense complex), A. ostenfeldii, Dinophysis acuminata, Gonyaulax spinifera, Azadinium sp., and the diatoms Pseudo-nitzschia australis and P. fraudulenta. Toxic dinoflagellates were detected in low densities whereas a Pseudo-nitzschia bloom was observed in late February. Isolates of A. catenella and P. delicatissima sensu stricto were phylogenetically characterized. The toxin profile of A. catenella was dominated by GTX4, while P. delicatissima sensu stricto showed no production of the neurotoxin domoic acid in culture conditions. The results provide base-line information for the management of harmful algal blooms in this little explored subantarctic area.",

keywords = "Harmful algae, Alerandrium, Pseudo-nitzschia, Toxin analyses, Phaeocystis-like bloom, Beagle Channel",

author = "Almandoz, {Gaston O.} and Cefarelli, {Adrian O.} and Soledad Diodato and Montoya, {Nora G.} and Benavides, {Hugo R.} and Mario Carignan and Marcelo Hernando and Elena Fabro and Katja Metfies and Nina Lundholm and Schloss, {Irene R.} and Marcela Alvarez and Ferrario, {Martha E.}",

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doi = "10.1016/j.marpolbul.2019.05.026",

language = "English",

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journal = "Marine Pollution Bulletin",

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T1 - Harmful phytoplankton in the Beagle Channel (South America) as a potential threat to aquaculture activities

AU - Almandoz, Gaston O.

AU - Cefarelli, Adrian O.

AU - Diodato, Soledad

AU - Montoya, Nora G.

AU - Benavides, Hugo R.

AU - Carignan, Mario

AU - Hernando, Marcelo

AU - Fabro, Elena

AU - Metfies, Katja

AU - Lundholm, Nina

AU - Schloss, Irene R.

AU - Alvarez, Marcela

AU - Ferrario, Martha E.

PY - 2019/8

Y1 - 2019/8

N2 - The Beagle Channel is a remote subantarctic environment where mussel aquaculture initiatives have existed since the early 1990s. Here we analyze phytoplankton biomass and composition, and the occurrence of harmful microalgae species and their toxins at three sites during the period 2015–2016. The occurrence of potentially harmful algae was observed throughout the study period, including toxigenic dinoflagellates such as Alexandrium catenella (Group I of the A. tamarense complex), A. ostenfeldii, Dinophysis acuminata, Gonyaulax spinifera, Azadinium sp., and the diatoms Pseudo-nitzschia australis and P. fraudulenta. Toxic dinoflagellates were detected in low densities whereas a Pseudo-nitzschia bloom was observed in late February. Isolates of A. catenella and P. delicatissima sensu stricto were phylogenetically characterized. The toxin profile of A. catenella was dominated by GTX4, while P. delicatissima sensu stricto showed no production of the neurotoxin domoic acid in culture conditions. The results provide base-line information for the management of harmful algal blooms in this little explored subantarctic area.

AB - The Beagle Channel is a remote subantarctic environment where mussel aquaculture initiatives have existed since the early 1990s. Here we analyze phytoplankton biomass and composition, and the occurrence of harmful microalgae species and their toxins at three sites during the period 2015–2016. The occurrence of potentially harmful algae was observed throughout the study period, including toxigenic dinoflagellates such as Alexandrium catenella (Group I of the A. tamarense complex), A. ostenfeldii, Dinophysis acuminata, Gonyaulax spinifera, Azadinium sp., and the diatoms Pseudo-nitzschia australis and P. fraudulenta. Toxic dinoflagellates were detected in low densities whereas a Pseudo-nitzschia bloom was observed in late February. Isolates of A. catenella and P. delicatissima sensu stricto were phylogenetically characterized. The toxin profile of A. catenella was dominated by GTX4, while P. delicatissima sensu stricto showed no production of the neurotoxin domoic acid in culture conditions. The results provide base-line information for the management of harmful algal blooms in this little explored subantarctic area.

KW - Harmful algae

KW - Alerandrium

KW - Pseudo-nitzschia

KW - Toxin analyses

KW - Phaeocystis-like bloom

KW - Beagle Channel

U2 - 10.1016/j.marpolbul.2019.05.026

DO - 10.1016/j.marpolbul.2019.05.026

M3 - Journal article

C2 - 31590766

SN - 0025-326X

VL - 145

SP - 105

EP - 117

JO - Marine Pollution Bulletin

JF - Marine Pollution Bulletin

ER -

Harmful phytoplankton in the Beagle Channel (South America) as a potential threat to aquaculture activities

Abstract

Keywords

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