Gambierdiscus excentricus sp. nov. (Dinophyceae), a benthic toxic dinoflagellate from the Canary Islands (NE Atlantic Ocean)
By S. Fraga, F. Rodríguez, A. Caillaud, Jorge Diogene, Nicolás Raho, M. Zapata. 2011
169 citations recorded by the source corpus.
A new benthic toxic dinoflagellate is described from the Canary Islands, Spain. Gambierdiscus excentricus sp. nov. was isolated from seaweeds growing in tidal ponds and was observed in winter and summer. Its morphology was studied by means of light microscopy (LM) and scanning electron microscopy (SEM); G. excentricus is a lenticular species having a Po plate ventrally displaced in relation to other species of the genus Gambierdiscus. Phylogenetic trees from large subunit (LSU) of ribosomal RNA gene sequences displayed a topology confirming that G. excentricus clustered in its’ own group, separated from the rest of Gambierdiscus species and with Gambierdiscus australes as its closest relative. Pigment composition studied from G. excentricus cultures, included peridinin, as the major carotenoid, chlorophyll a and the accessory chlorophylls c1 and c2. The Neuroblastoma cell-based assays for ciguatoxins (CTX) and maitotoxin (MTX) confirmed G. excentricus as a CTX- and MTX-like compounds producer. The finding of a toxic species of Gambierdiscus in the Canary Islands may explain the recent reported cases of ciguatera in the area.
Subfields: Ecology, Environmental Chemistry, Oceanography
View Paper: https://www.semanticscholar.org/paper/d7f1f0c5d184efe09cc55a4ed312595494b7a18c
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In Environmental Chemistry
In Oceanography
Citations in the corpus
- Growth of eight Gambierdiscus (Dinophyceae) species: Effects of temperature, salinity and irradiance § (2012, background): “2010; Fraga et al., 2011; Parsons et al., 2011). The current study was undertaken in order to determine how variations in temperature, salinity and light affect the growth of Gambierdiscus. The goal was to gain insight on how these environmental variables may affect the distribution and relative abu”
- Sampling harmful benthic dinoflagellates: Comparison of artificial and natural substrate methods (2014, unknown): “The resurgence of interest in the biodiversity of harmful benthic dinoflagellates, most notably the ciguatera-associated genus Gambierdiscus (Fraga et al., 2011; Nishimura et al., 2013; Tester et al., 2013) has been facilitated by recent advances in taxonomy (Litaker et al., 2009) and molecular…”
- Pigment-based chloroplast types in dinoflagellates (2012, background): “Information on chloroplast pigments has usually been reported in new descriptions of dinoflagellates (e.g. Fraga et al. 1995, 2008, 2011, Elbrächter & Schnepf 1996, Bolch et al. 1999, Daug - bjerg et al. 2000, Montresor et al. 2003, de Salas et al. 2003, 2004, 2005, Garcés et al. 2006, Tillmann et…”