The effect of elevated temperature on the toxicity of the laboratory cultured dinoflagellate Ostreopsis lenticularis (Dinophyceae)
The effect of elevated temperature on the toxicity of the laboratory cultured dinoflagellate Ostreopsis lenticularis (Dinophyceae)
| dc.creator | Ashton, Mayra | |
| dc.creator | Tosteson, Thomas | |
| dc.creator | Tosteson, Carmen | |
| dc.date | 2003-06-01 | |
| dc.date.accessioned | 2023-08-03T18:15:52Z | |
| dc.date.available | 2023-08-03T18:15:52Z | |
| dc.identifier | https://revistas.ucr.ac.cr/index.php/rbt/article/view/26399 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7899889 | |
| dc.description | Ostreopsis lenticularis Fukuyo 1981, is the major benthic dinoflagellate vector implicated in ciguatera fish poisoning in finfish on the southwest coast of Puerto Rico. Clonal laboratory cultures of O. lenticularis (clone 301) exposed to elevated temperatures (30-31°C) for 33 and 54 days showed significant increases in the quantity of ex-tractable toxin they produced as compared to their toxicities versus cells grown at temperatures of 25-26°C. O. lenticularis samples collected directly from the field following exposure to elevated temperatures for comparable pe-riods of time also showed significant increases in extractable toxin. The increased toxicity of both field sampled and laboratory grown O. lenticularis exposed to elevated temperatures may result from the effects of elevated tempera-tures on their metabolism and/or the bacterial symbionts found associated with these microalgae. The number of bacteria associated with cultured O. lenticularis exposed to elevated temperatures was significantly reduced. In-creased toxin recovery from O. lenticularis exposed to elevated temperatures may have resulted from the direct effect of temperature on toxin production and/or the reduction of Ostreopsis associated bacterial flora that consume toxin in the process of their growth. This reduction in the quantity of associated bacterial flora in temperature treated cultures may result in increased toxin recovery from O. lenticularis due to a reduction in the consumption of toxin by these symbiont bacteria. | en-US |
| dc.description | Ostreopsis lenticularis Fukuyo 1981, es un dinoflagelado bentónico y el principal vector implicado en envenenamientos por ciguatera en peces arrecifales en la costa sur-oeste de Puerto Rico. Cultivos clonales de O. lenticularis (clón 301) que fueron expuestos en el laboratorio a temperaturas elevadas (30-31°C) por 33 y 54 días demostraron aumentos signi-ficativos en la cantidad de toxinas extraíbles que produjeron al comparar su toxicidad con la de cultivos que crecieron a temperaturas de 25-26°C. Muestras de O. lenticularis recogi-das directamente del campo después de estar expuestas a temperaturas elevadas demostraron aumentos significativos en la cantidad de toxi-nas extraíbles. El aumento en toxicidad evi-dente en las muestras de campo, al igual que en las muestras del laboratorio expuestas a altas temperaturas puede ser el resultado de los efectos de las altas temperaturas actuado sobre el metabolismo o los simbiontes bacterianos asociados a estas microalgas. El número de bacterias asociadas con los cultivos de O. lenticularis expuestos a altas temperaturas se vieron significativamente reducidos. El au-mento en la cantidad de toxinas recuperadas de O. lenticularis expuestos a altas temperatu-ras pudieron resultar del efecto directo de la temperatura sobre la producción de toxinas o a la reducción en la flora bacteriana asociada a Ostreopsis. | es-ES |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Universidad de Costa Rica | en-US |
| dc.relation | https://revistas.ucr.ac.cr/index.php/rbt/article/view/26399/26587 | |
| dc.rights | Derechos de autor 2003 Revista de Biología Tropical | es-ES |
| dc.rights | http://creativecommons.org/licenses/by/4.0 | es-ES |
| dc.source | Revista de Biología Tropical; Vol. 51 No. S4 (2003): Volume 51 – Supplement 4 – June 2003: 30th Scientific Meeting of the Association of Marine Laboratories of the Caribbean (AMLC); 1–6 | en-US |
| dc.source | Revista de Biología Tropical; Vol. 51 Núm. S4 (2003): Volumen 51 – Suplemento 4 – Junio 2003: 30va Convención Científica de la Asociación de Laboratorios Marinos del Caribe (ALMC); 1–6 | es-ES |
| dc.source | Revista Biología Tropical; Vol. 51 N.º S4 (2003): Volumen 51 – Suplemento 4 – Junio 2003: 30va Convención Científica de la Asociación de Laboratorios Marinos del Caribe (ALMC); 1–6 | pt-PT |
| dc.source | 2215-2075 | |
| dc.source | 0034-7744 | |
| dc.source | 10.15517/rbt.v51i4 | |
| dc.subject | Ostreopsis lenticularis | en-US |
| dc.subject | elevated temperatures | en-US |
| dc.subject | toxin production | en-US |
| dc.subject | associated bacterial flora | en-US |
| dc.subject | ciguatera | en-US |
| dc.title | The effect of elevated temperature on the toxicity of the laboratory cultured dinoflagellate Ostreopsis lenticularis (Dinophyceae) | en-US |
| dc.title | The effect of elevated temperature on the toxicity of the laboratory cultured dinoflagellate Ostreopsis lenticularis (Dinophyceae) | es-ES |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | Article | en-US |