Protistology • 14 (2) 58–69 (2020) |
A Kryptoperidiniaceae species (Dinophyceae: Peridiniales) blooming in coastal Yucatan waters, Gulf of Mexico |
Yuri B. Okolodkov1, Fany del Carmen Merino-Virgilio2, Dora A. Huerta-Quintanilla2, Ismael Gárate-Lizárraga3, Karen A. Steidinger4, Ana C. Aguilar-Trujillo2, Jorge A. Herrera-Silveira2, Silvia Espinosa-Matías5, and Alejandro Martínez-Mena5
1 Instituto de Ciencias Marinas y Pesquerías, Universidad Veracruzana (ICIMAP-UV), Laboratorio de Botánica Marina y Planctología, Boca del Río,
Veracruz, Mexico
| Submitted February 27, 2020 | Accepted April 15, 2020 | Summary A small, photosynthetic Peridiniales species caused an intense bloom (up to 3.75×107 cells-1) in the marina of Sisal on the northern Yucatan Peninsula coast, SE Gulf of Mexico, in August 2010. The salinity was 32.4, and the water temperature was 29.5 oC. The cells were 12.5–23.7 µm long (19.02 ± 2.03 µm), 8.7–18.7 µm wide (15.45 ± 2.19 µm) and 7.5–12.5 µm deep (dorsoventral length; 9.63 ± 1.21 µm), the length/width ratio was 1.17±0.13 and the width/depth ratio 1.83±0.22 (n= 00). The species had a thecal plate formula of Po, X, cp, 4’, 2a, 6”, 5c, PC, 4s, 5”’, 2””. The taxon was assigned to the family Kryptoperidiniaceae, although a second (eukaryotic) nucleus was not observed, sharing its thecal features with both Kryptoperidinium and Durinskia. In subsequent years, it was occasionally found at other sites along the Yucatan coast and possibly represents a recent invasion of the southern Gulf of Mexico, preferring semi-enclosed water bodies.
Key words: algal blooms, dinoflagellates, Kryptoperidiniaceae, microalgae, phytoplankton, scanning electron microscopy, thecal morphology
Address for correspondence: Yuri B. Okolodkov. Instituto de Ciencias Marinas y Pesquerías, Universidad Veracruzana, Calle Mar Mediterraneo 314, Fracc. Costa Verde, C.P. 94294, Boca del Río, Veracruz, Mexico; e-mail: yuriokolodkov@yahoo.com |
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