Karenia longicanalis sp. nov. (Dinophyceae): a New Bloom-Forming Species Isolated from Hong Kong, May 1998

Yang, Z. B.; Hodgkiss, I. J.; Hansen, Gert H.

doi:10.1515/bot.2001.009

Cited by 34 publications

(15 citation statements)

References 8 publications

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“…The Karenia longicanalis bloom reached a significant cell density of 72.6 × 10 3 cells L -1 , but was classified as WAH, because it did not produce any apparent damage in Acapulco. This agrees with the observation of the bloom of this species in Hong Kong during May 1998 that was also not harmful and characterized as a non-producing species of brevetoxins (PbTx) (Yang et al, 2001). We note the density values found by Gárate-Lizárraga et al (2016) for the bloom of Karenia sp.…”

Section: Wah Bloomssupporting

confidence: 91%

Planktonic algal blooms from 2000 to 2015 in Acapulco Bay, Guerrero, Mexico

Castillo

Resendiz

2018

Acta Bot. Mex.

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Background and Aims: Harmful algal blooms (HABs) affect the marine ecosystem in multiple ways. The objective was to document the species that produced blooms in Acapulco Bay over a 15-year period (2000-2015) and analyze the presence of these events with El Niño-Southern Oscillation (ENSO).Methods: Thirty-five collections, made during the years 2000, 2002-2004, 2006-2011, 2013-2015, were undertaken with phytoplankton nets and Van Dorn bottle, yielding 526 samples, of which 423 were quantified using the Utermöhl method. The relationship of HAB with ENSO was made with standardized values of Multivariate ENSO Index (MEI) and the significance was evaluated with the method quadrant sums of Olmstead-Tukey.Key results: Using data of cell density and high relative abundance (>60%), 53 blooms were recorded, most of them occurring during the rainy season (June-October) and dry-cold season (November-March), plus 37 blooms reported by other authors. These 90 blooms were composed of 40 taxa: 21 diatoms and 19 dinoflagellates, the former mostly innocuous. Sixty-seven blooms had species reported as noxious, of which 11 species commonly produce toxic HAB. Toxic taxa are Pseudo-nitzschia spp. (four taxa), and seven dinoflagellates.Conclusions: Abundance analyses of Pyrodinium bahamense var. compressum and Gymnodinium catenatum against values of MEI showed a clear tendency to produce HAB in La Niña conditions. Both taxa, producers of saxitoxins, cause paralytic shellfish poisoning (PSP) and coexist in Acapulco; therefore, they present a risk to human health. Another noxious 52 taxa found in Acapulco were currently considered potential HABs, because they have been recorded at low densities. Given the sharp differences in density values of bloom-forming species found in this work compared to those reported by other authors on similar dates, it is important to perform calibration tests to rule out possible errors in cell counts.

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Section: Wah Bloomssupporting

confidence: 91%

Planktonic algal blooms from 2000 to 2015 in Acapulco Bay, Guerrero, Mexico

Castillo

Resendiz

2018

Acta Bot. Mex.

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“…Takayama (1985) based on scanning electron microscopy (SEM) showed several types of apical grooves in unarmoured dinoflagellates. Daugbjerg et al (2000) based on light microscopy, SEM, pigment composition and LSU rDNA sequences split Gymnodinium into four genera: Gymnodinium sensu stricto, Akashiwo G. (Yang et al 2001;Botes et al 2003;de Salas et al 2004;Haywood et al 2004). Among the recently described species, Karenia papilionacea Haywood et Steidinger showed several peculiar characteristics in cultures with an unusual plasticity and high size variability.…”

Section: Introductionmentioning

confidence: 99%

The Dinoflagellate Genera Brachidinium, Asterodinium, Microceratium and Karenia in the Open SE Pacific Ocean

Gómez¹

2006

ALGAE

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The morphometry and distribution of the unarmoured dinoflagellates Brachidinium capitatum F.J.R. Taylor, Asterodinium gracile Sournia, Microceratium orstomii Sournia and the toxic species Karenia papilionacea Haywood et Steidinger have been investigated in open waters of the SE Pacific Ocean. The genus Microceratium Sournia is recorded for the first time since the initial description. These taxa showed a high morphological similarity and they may correspond to life stages of a highly versatile single species that is able to project body extensions. Karenia papilionacea showed the higher abundance in the surface waters of the more productive areas (the Marquesas Archipelago and the Perú-Chile Current). Brachidinium capitatum and K. papilionacea often co-occurred, predominating B. capitatum in offshore surface waters. Asterodinium gracile was recorded at the bottom of the euphotic zone (down to 210 m depth), with a shallower distribution in more productive areas. Intermediate specimens of Asterodinium-Brachidinium-Karenia, with variable disposition and size of the body extensions were illustrated.

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“…Karenia species are characterized by their linear apical groove, lack of a ventral pore, and their generally dorsoventrally flattened appearance [except for K. digitata (Yang et al. 2000), K. longicanalis (Yang et al. 2001), and K. umbella (de Salas et al.…”

mentioning

confidence: 99%

NOVEL UNARMORED DINOFLAGELLATES FROM THE TOXIGENIC FAMILY KARENIACEAE (GYMNODINIALES): FIVE NEW SPECIES OF KARLODINIUM AND ONE NEW TAKAYAMA FROM THE AUSTRALIAN SECTOR OF THE SOUTHERN OCEAN¹

Salas

Laza‐Martínez

Hallegraeff

2008

Journal of Phycology

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Six new species of unarmored dinoflagellates in the family Kareniaceae were isolated from the Australian sector of the Southern Ocean in March 2006: Takayama tuberculata de Salas sp. nov, Karlodinium antarcticum de Salas sp. nov., Karl. ballantinum de Salas sp. nov., Karl. conicum de Salas sp. nov., Karl. corrugatum de Salas sp. nov., and Karl. decipiens de Salas et Laza-Martínez sp. nov. These new taxa were characterized using light and electron microscopy and sequencing of the LSU rDNA and are well supported based either on their morphology or molecular phylogeny. Takayama tuberculata, isolated just north of the polar front (55°-57° S), is genetically close to T. tasmanica, but smaller, with a significantly reduced number of amphiesmal vesicles. Medium-sized Karl. antarcticum, also isolated from near the polar front, is characterized by its long ovoid cell outline and very long apical groove. The small Karl. ballantinum has a very short apical groove. The large Karl. conicum has a distinct conical epicone and spherical posterior nucleus. The small Karl. corrugatum, from just south of the polar front, has distinctive parallel striations on the epicone surface and a distinctively shaped and placed ventral pore. The large and widespread Karl. decipiens, distributed through Southern Ocean waters from the polar front to Tasmanian coastal waters, and coastal Spain, has a helicoidal chloroplast arrangement and a large central nucleus. This study represents the first description of species in the potentially ichthyotoxic family Kareniaceae recorded from the Southern Ocean.

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Karenia longicanalis sp. nov. (Dinophyceae): a New Bloom-Forming Species Isolated from Hong Kong, May 1998

Cited by 34 publications

References 8 publications

Planktonic algal blooms from 2000 to 2015 in Acapulco Bay, Guerrero, Mexico

Planktonic algal blooms from 2000 to 2015 in Acapulco Bay, Guerrero, Mexico

The Dinoflagellate Genera Brachidinium, Asterodinium, Microceratium and Karenia in the Open SE Pacific Ocean

NOVEL UNARMORED DINOFLAGELLATES FROM THE TOXIGENIC FAMILY KARENIACEAE (GYMNODINIALES): FIVE NEW SPECIES OF KARLODINIUM AND ONE NEW TAKAYAMA FROM THE AUSTRALIAN SECTOR OF THE SOUTHERN OCEAN¹

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Karenia longicanalis sp. nov. (Dinophyceae): a New Bloom-Forming Species Isolated from Hong Kong, May 1998

Cited by 34 publications

References 8 publications

Planktonic algal blooms from 2000 to 2015 in Acapulco Bay, Guerrero, Mexico

Planktonic algal blooms from 2000 to 2015 in Acapulco Bay, Guerrero, Mexico

The Dinoflagellate Genera Brachidinium, Asterodinium, Microceratium and Karenia in the Open SE Pacific Ocean

NOVEL UNARMORED DINOFLAGELLATES FROM THE TOXIGENIC FAMILY KARENIACEAE (GYMNODINIALES): FIVE NEW SPECIES OF KARLODINIUM AND ONE NEW TAKAYAMA FROM THE AUSTRALIAN SECTOR OF THE SOUTHERN OCEAN1

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NOVEL UNARMORED DINOFLAGELLATES FROM THE TOXIGENIC FAMILY KARENIACEAE (GYMNODINIALES): FIVE NEW SPECIES OF KARLODINIUM AND ONE NEW TAKAYAMA FROM THE AUSTRALIAN SECTOR OF THE SOUTHERN OCEAN¹