Descripción
Ciguatera fish poisoning (CFP) has been reported for many years in Rarotonga, Cook Islands, and has had the world’s highest reported incidence of this illness for the last 20 years. Following intensive sampling to understand the distribution of the causative organisms of CFP, an undescribed Gambierdiscus species was isolated from the Rarotongan lagoon. Gambierdiscus cheloniae sp. nov. has the common Gambierdiscus Kofoidian plate formula (except for a variability in the number of precingular plates in aberrant cells): Po, 30 , 600 (700), 6C?, 6 or 7S, 50 00 , 1p and 200 00 . The 20 plate is hatchet shaped and the dorsal end of 1p is pointed and the relatively narrow 1p plate. Morphologically G. cheloniae is similar to the genetically closely related species G. pacificus, G. toxicus and G. belizeanus, although smaller (depth and length) than G. toxicus. The apical pore plate varies from those of G. belizeanus and G. pacificus, which are shorter and narrower, and from G. toxicus, which is larger. G. cheloniae also differs from G. pacificus in the shape of the 20 plate. The description of this new species is supported by phylogenetic analyses using three different gene regions. G. cheloniae produced the putative maitotoxin-3 analogue, MTX-3, but neither maitotoxin or monitored ciguatoxin. Extracts of G. cheloniae were shown to be highly toxic to mice by intraperitoneal (i.p.) injection, although they were less toxic by gavage. It is possible that this species produces toxins other than putative MTX-3.
Registros
Los datos en este recurso de evento de muestreo han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 6 registros.
también existen 2 tablas de datos de extensiones. Un registro en una extensión provee información adicional sobre un registro en el core. El número de registros en cada tabla de datos de la extensión se ilustra a continuación.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
Smith K F, Rhodes L, Verma A, Curley B G, Harwood D T, Kohli G S, Solomona D, Rongo T, Munday R, Murray S A (2024). A Gambierdiscus species (Dinophyceae) from Rarotonga, Cook Islands: Gambierdiscus cheloniae. Version 1.0. Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Samplingevent dataset. https://nzobisipt.niwa.co.nz/resource?r=gambierdiscus_rarotonga&v=1.0
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento (CC-BY 4.0).
Registro GBIF
Este recurso no ha sido registrado en GBIF
Palabras clave
Samplingevent
Contactos
- Proveedor De Los Metadatos ●
- Originador ●
- Punto De Contacto
- Originador
- Originador
- Originador
- Originador
- Originador
- Originador
- Originador
- Originador
- Originador
Cobertura geográfica
Rarotonga, Cook Islands
| Coordenadas límite | Latitud Mínima Longitud Mínima [-21,273, -159,826], Latitud Máxima Longitud Máxima [-21,211, -159,729] |
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Cobertura temporal
| Fecha Inicial / Fecha Final | 2014-11-01 / 2014-11-30 |
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Métodos de muestreo
Sampling was carried out in November 2014 at six selected sample sites: Muri Lagoon, Titikaveka Beach, adjacent to the Queen’s Representative residence (near Turoa Beach), the Papua Passage, adjacent to the Highland Paradise Cultural Centre and Black Rock Beach
| Área de Estudio | Rarotonga, Cook Islands |
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Descripción de la metodología paso a paso:
- Dinoflagellate cells were shaken from macro-algae into sealable plastic containers containing local sea water (approx. 500 mL each). Sub-samples were transferred to 50 mL Falcon tubes (BD Biosciences, USA) and germanium dioxide (approx. 1% final conc.) was added on arrival at the temporary laboratory (Muri Beachcomber Motel, Rarotonga, Cook Islands) in order to suppress diatom growth. Cells were isolated under a light microscope (Olympus CK2) using modified pickers (fine glass tubing with one end drawn to a fine tip under flame and the other end attached to fine silicone tubing so as suction can be applied) and transferred into 24-well tissue culture plates (Becton Dickinson, USA) containing sea water and f2 medium (Guillard, 1975; final conc. 5%) to support dinoflagellate growth. Uni-algal isolates were transported back to the laboratory at the Cawthron Institute, Nelson, New Zealand for culturing and determination of their DNA sequencing data, morphological characteristics and toxin production. On return to the Cawthron Institute, cultures were grown at 25 C +- 2 C with 40–70 mmol m-2 s-1 photon irradiance (12:12 h L:D). Selected clonal cultures were deposited in the Cawthron Institute Culture Collection of Micro-algae (CICCM).
Datos de la colección
| Nombre de la Colección | Cawthron Institute, Nelson, New Zealand |
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| Identificador de la Colección | CAWD |
Referencias bibliográficas
- Smith, K.F., Rhodes, L., Verma, A., Curley, B.G., Harwood, D.T., Kohli, G.S., Solomona, D., Rongo, T., Munday, R. and Murray, S.A., 2016. A new Gambierdiscus species (Dinophyceae) from Rarotonga, Cook Islands: Gambierdiscus cheloniae sp. nov. Harmful Algae, 60, pp.45-56.
Metadatos adicionales
marine, harvested by iOBIS
| Identificadores alternativos | https://nzobisipt.niwa.co.nz/resource?r=gambierdiscus_rarotonga |
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