Diversity and morphology of the species of Pseudo-nitzschia (Bacillariophyta) of the national park Sistema Arrecifal Veracruzano, SW Gulf of Mexico
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 annua...
| Hoofdauteurs: | , , |
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| Formaat: | Online |
| Taal: | eng |
| Gepubliceerd in: |
Instituto de Ecología, A.C.
2022
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| Online toegang: | https://abm.ojs.inecol.mx/index.php/abm/article/view/1140 |
| _version_ | 1799771311790096384 |
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| author | Parsons, Michael L. Okolodkov, Yuri B. Aké-Castillo, José A. |
| author_facet | Parsons, Michael L. Okolodkov, Yuri B. Aké-Castillo, José A. |
| author_sort | Parsons, Michael L. |
| collection | ABM |
| description | 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 oC). |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-1140 |
| institution | Acta Botanica Mexicana |
| language | eng |
| publishDate | 2022 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-11402022-12-23T05:22:20Z Diversity and morphology of the species of Pseudo-nitzschia (Bacillariophyta) of the national park Sistema Arrecifal Veracruzano, SW Gulf of Mexico Diversidad y morfología de las especies de Pseudo-nitzschia (Bacillariophyta) del parque nacional Sistema Arrecifal Veracruzano, suroeste del Golfo de México Parsons, Michael L. Okolodkov, Yuri B. Aké-Castillo, José A. amnesic shellfish poisoning diatoms Gulf of Mexico morphology new records Pseudo-nitzschia taxonomy Veracruz diatomeas Golfo de México intoxicación amnésica por consumo de mariscos morfología nuevos registros Pseudo-nitzschia taxonomía Veracruz 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 oC). 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 Pseudo-nitzschia 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 oC). Instituto de Ecología, A.C. 2022-11-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf text/html https://abm.ojs.inecol.mx/index.php/abm/article/view/1140 10.21829/abm98.2012.1140 Acta Botanica Mexicana; No. 98 (2012); 51-72 Acta Botanica Mexicana; Núm. 98 (2012); 51-72 2448-7589 0187-7151 eng https://abm.ojs.inecol.mx/index.php/abm/article/view/1140/1358 https://abm.ojs.inecol.mx/index.php/abm/article/view/1140/html Derechos de autor 2016 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Parsons, Michael L. Okolodkov, Yuri B. Aké-Castillo, José A. Diversity and morphology of the species of Pseudo-nitzschia (Bacillariophyta) of the national park Sistema Arrecifal Veracruzano, SW Gulf of Mexico |
| title | Diversity and morphology of the species of Pseudo-nitzschia (Bacillariophyta) of the national park Sistema Arrecifal Veracruzano, SW Gulf of Mexico |
| title_full | Diversity and morphology of the species of Pseudo-nitzschia (Bacillariophyta) of the national park Sistema Arrecifal Veracruzano, SW Gulf of Mexico |
| title_fullStr | Diversity and morphology of the species of Pseudo-nitzschia (Bacillariophyta) of the national park Sistema Arrecifal Veracruzano, SW Gulf of Mexico |
| title_full_unstemmed | Diversity and morphology of the species of Pseudo-nitzschia (Bacillariophyta) of the national park Sistema Arrecifal Veracruzano, SW Gulf of Mexico |
| title_short | Diversity and morphology of the species of Pseudo-nitzschia (Bacillariophyta) of the national park Sistema Arrecifal Veracruzano, SW Gulf of Mexico |
| title_sort | diversity and morphology of the species of pseudo-nitzschia (bacillariophyta) of the national park sistema arrecifal veracruzano, sw gulf of mexico |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/1140 |
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