Alexandrium monilatum (Howell) Balech, 1995

Hernández-Becerril, David U., Pichardo-Velarde, Jorge G., Alonso-Rodríguez, Rosalba, Maciel-Baltazar, Ebodio, Morquecho, Lourdes, Esqueda-Lara, Karina, Barón-Campis, Sofía A. & Quiroz-González, Nataly, 2023, Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean, Botanica Marina (Warsaw, Poland) 66 (6), pp. 539-557 : 545

publication ID

https://doi.org/ 10.1515/bot-2023-0037

DOI

https://doi.org/10.5281/zenodo.11000328

persistent identifier

https://treatment.plazi.org/id/03E50944-FFB1-2A1E-4D24-E0CBFB63F815

treatment provided by

Felipe

scientific name

Alexandrium monilatum (Howell) Balech
status

 

3.1.7 Alexandrium monilatum (Howell) Balech ( Figures 28–37 View Figures 28–37 )

References: Balech 1995, 67, pl. XV, figs 1–16; Faust and Gulledge 2002, pl. 4 fig. 1; Taylor et al. 2003, 406, fig. 15.16; Lassus et al. 2016, 50; Hernández-Becerril et al. 2021, 70, 71.

Chain-forming species ( Figures 28–30 View Figures 28–37 ), with medium to long chains (up to 8 cells per chain), cells strongly depressed, longer than wide, with an evident apical pore ( Figures 31 and 32 View Figures 28–37 ). Convex epitheca, wide and excavated cingulum and concave hypotheca ( Figure 31 View Figures 28–37 ). The first apical plate (1′) is not in connection with Po ( Figures 32–34 View Figures 28–37 ), which is a large structure, with a comma-shape and a large connecting pore ( Figures 34 and 36 View Figures 28–37 ). The posterior sulcal plate (Sp) is rhomboid and has a large pore ( Figures 35 and 37 View Figures 28–37 ).

Measurements: 38–46 μm L, 45–63 μm W (Table 1).

Toxicity: this species produces gonoidomin A, toxin that causes hemolysis to erythrocytes in mammalian species, including humans ( May et al. 2010).

Distribution: in the Gulf of Tehuantepec.

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