Occurrence patterns of Alexandrium tamarense (Lebour) Balech populations in the Golfo Nuevo (Patagonia, Argentina), with observations on ventral pore occurrence in natural and cultured cells

Improved phylogenetic resolution of toxic and non-toxic Alexandrium strains using a concatenated rDNA approach

“…Multiple sequencing of the strain confirmed a monoculture, with no discrepancies from the A. catenella ribotype. Morphological intermediates within the tamarense complex have been reported previously (Gayoso and Fulco, 2006;Orlova et al, 2007). Congruent with our result Kim et al (2002) also found the ventral pore in the first apical plate of A. catenella ribotypes (Kim et al, 2002).…”

Comparative studies on morphology, ITS sequence and protein profile of Alexandrium tamarense and A. catenella isolated from the China Sea

“…However, recently, Kim et al (2002) reported that the ventral pore was present in the first apical plate of A. catenella, and thus challenged the previous taxonomic criterion for A. catenella and A. tamarense. Similarly, A. tamarense cells collected from field populations and in clones grown under different conditions displayed great variability in terms of the presence/absence of the ventral pore (Gayoso and Fulco, 2006). In our study, we also noted the absence of the ventral pore in some cells of A. tamarense (Fig.…”

A reinvestigation of saxitoxin production and sxtA in the ‘non-toxic’ Alexandrium tamarense Group V clade

“…fundyense) (Balech, 1995). Some forms with morphologies intermediate between these three species have also been observed (Cembella et al, 1988;Gayoso and Fulco, 2006;Orlova et al, 2007;Sako et al, 1990;Orr et al, 2011).…”