Morphology, phylogeny and toxin analysis of <i>Pseudo-nitzschia pseudodelicatissima</i> (Bacillariophyceae) isolated from the Thermaikos Gulf, Greece

Moschandreou, Kimon K.; Papaefthimiou, Dimitra; Katikou, Panagiota; Kalopesa, Eleni; Panou, Alexandra; Nikolaidis, Georgios

doi:10.2216/ph09-42.1

Cited by 34 publications

(20 citation statements)

References 63 publications

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“…obs. ]; Bates & Trainer, 2006;Moschandreou et al, 2010), although more often non-toxic strains have been reported (see references in Moschandreou et al, 2010). Plate 1.…”

Section: Pseudo-nitzschia Pseudodelicatissimamentioning

confidence: 99%

Diversidad y morfología de las especies de Pseudo-nitzschia (Bacillariophyta) del parque nacional Sistema Arrecifal Veracruzano, suroeste del Golfo de México

2022

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In order to evaluate the risk for marine ecosystem and human health, the diversity and morphology of diatoms of the genus Pseudo-nitzschia were studied. Weekly sampling was performed at seven geo-referenced sites in the National Park Sistema Arrecifal Veracruzano, SW Gulf of Mexico, during the annual cycle from May 2005 to May 2006. Samples were taken in the 30-cm surface layer of the water column with a phytoplankton net of 20-µm mesh size. With the use of light, transmission and scanning electron microscopy, seven Pseudo-nitzschia species were identified: non-toxic P. cf. subcurvata (examined only by light microscopy) and P. brasiliana, and potentially toxic, causative agents of amnesic shellfish poisoning (ASP) due to domoic acid: P. calliantha, P. cuspidata, P. delicatissima, P. pseudodelicatissima and P. pungens. It is concluded that there is a potential risk of ASP in the study area. P. brasiliana and P. calliantha are new records for the SW Gulf of Mexico. Comparisons with studies conducted in the northern Gulf of Mexico indicate that the diversity of Pseudo-nitzschia in the Gulf of Mexico may be greater than currently documented and that some species (e.g., P. multiseries) may have biogeographic limitations (e.g., temperatures below 27 o C).Key words: amnesic shellfish poisoning, diatoms, Gulf of Mexico, morphology, new records, Pseudo-nitzschia, taxonomy, Veracruz. 98: 51-72 (2012) 52 RESUMEN Con el fin de evaluar el riesgo para el ecosistema marino y la salud humana, se estudió la diversidad y la morfología de las diatomeas del género Pseudo-nitzschia del Parque Nacional Sistema Arrecifal Veracruzano, en el suroeste del Golfo de México. Se realizaron muestreos semanalmente en siete sitios georeferenciados durante un ciclo anual de mayo de 2005 a mayo de 2006. Las muestras se tomaron de la capa superficial de 30 cm de la columna de agua con una red fitoplanctónica de 20 µm de tamaño de malla. Con ayuda de los microscopios fotónico, electrónico de transmisión y electrónico de barrido se identificaron siete especies de Pseudo-nitzschia: las no tóxicas P. cf. subcurvata (estudiada solamente en el microscopio fotónico) y P. brasiliana, y las potencialmente venenosas, causantes de la intoxicación amnésica por consumo de mariscos (ASP) debido al ácido domoico: P. calliantha, P. cuspidata, P. delicatissima, P. pseudodelicatissima y P. pungens. Se concluye que existe riesgo potencial de ASP en el área de estudio. P. brasiliana y P. calliantha son nuevos registros para el suroeste del Golfo de México. Las comparaciones con los estudios en el norte del mismo cuerpo marino indican que la diversidad de Pseudonitzschia en el Golfo de México puede ser más alta que la documentada en el presente, y que algunas especies (e.g., P. multiseries) pueden tener limitaciones ecológicas y biogeográficas (e.g., temperaturas menores de 27 o C). Acta Botanica MexicanaPalabras clave: diatomeas, Golfo de México, intoxicación amnésica por consumo de mariscos, morfología, nuevos registros, Pseudo-nitzschia, taxonomía, Verac...

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“…obs. ]; Bates & Trainer, 2006;Moschandreou et al, 2010), although more often non-toxic strains have been reported (see references in Moschandreou et al, 2010). Plate 1.…”

Section: Pseudo-nitzschia Pseudodelicatissimamentioning

confidence: 99%

Diversidad y morfología de las especies de Pseudo-nitzschia (Bacillariophyta) del parque nacional Sistema Arrecifal Veracruzano, suroeste del Golfo de México

2022

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“…The toxin has now been detected in shellfish from many European countries, particularly UK, Ireland and France (EFSA, 2009). European strains of several Pseudo-nitzschia species have been found to be toxic: P. australis, P. calliantha, P. galaxiae, P. multiseries, P. multistriata, P. pseudodelicatissima, P. pungens and P. seriata (Table 3; Lundholm et al, 1994;Sarno and Dahlmann, 2000;Cusack et al, 2002;Orsini et al, 2002;Fehling et al, 2004a,b;Moschandreou et al, 2010;E. Keady, pers.…”

Section: Europementioning

confidence: 99%

“…Moreover, in all phylogenetic studies, P. pseudodelicatissima and P. cuspidata strains cluster within one highly supported clade (e.g. Lundholm et al, 2003, in press;Amato and Montresor, 2008;Moschandreou et al, 2010). Studies on the secondary structure of strains from the clade have revealed that CBCs and hemi-CBCs exist among the strains in the group (Amato et al, 2007;Moschandreou et al, 2010), but any subdivision of the clade is premature (Lundholm et al, 2003, in press;Amato and Montresor, 2008;Moschandreou et al, 2010).…”

Section: Phylogenymentioning

confidence: 99%

“…Lundholm et al, 2003, in press;Amato and Montresor, 2008;Moschandreou et al, 2010). Studies on the secondary structure of strains from the clade have revealed that CBCs and hemi-CBCs exist among the strains in the group (Amato et al, 2007;Moschandreou et al, 2010), but any subdivision of the clade is premature (Lundholm et al, 2003, in press;Amato and Montresor, 2008;Moschandreou et al, 2010). The type locality of P. cuspidata is Gran Canary (most closely represented by the strain ''Tenerife8''), whereas the type locality of P. pseudodelicatissima is the subarctic Denmark Strait (Hasle, 1965), for which no strains are available.…”

Section: Phylogenymentioning

confidence: 99%

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Pseudo-nitzschia physiological ecology, phylogeny, toxicity, monitoring and impacts on ecosystem health

et al. 2012

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“…Pseudonitzschia pseudodelicatissima can produce domoic acid, a causative agent of amnesic shellfish poisoning, notably some strains isolated from the Gulf of Mexico and Greece (Pan et al 2001, Moschandreou et al 2010. However, domoic acid has not been detected in strains of P. pseudodelicatissima from Gafahna, Portugal, Denmark Strait (northwest of Iceland), and Bizerte Lagoon, Tunisia (Lundholm et al 2003, Sahraoui et al 2011.…”

Section: Resultsmentioning

confidence: 99%

Proliferation of Pseudo-nitzschia brasiliana and P. cf. pseudodelicatissima (Bacillariophyceae) in the Estero Santa Cruz, northern Gulf of California, Mexico

Gárate-Lizárraga

Poot-Delgado

Ramírez-Castillo

et al. 2013

Rev. biol. mar. oceanogr.

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Morphology, phylogeny and toxin analysis of Pseudo-nitzschia pseudodelicatissima (Bacillariophyceae) isolated from the Thermaikos Gulf, Greece

Cited by 34 publications

References 63 publications

Diversidad y morfología de las especies de Pseudo-nitzschia (Bacillariophyta) del parque nacional Sistema Arrecifal Veracruzano, suroeste del Golfo de México

Diversidad y morfología de las especies de Pseudo-nitzschia (Bacillariophyta) del parque nacional Sistema Arrecifal Veracruzano, suroeste del Golfo de México

Pseudo-nitzschia physiological ecology, phylogeny, toxicity, monitoring and impacts on ecosystem health

Proliferation of Pseudo-nitzschia brasiliana and P. cf. pseudodelicatissima (Bacillariophyceae) in the Estero Santa Cruz, northern Gulf of California, Mexico

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