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Revista de biología marina y oceanografía

On-line version ISSN 0718-1957

Abstract

GARATE-LIZARRAGA, Ismael. Unarmored dinoflagellates present during a bloom of Ceratoperidinium falcatum in Bahía de La Paz, Gulf of California. Rev. biol. mar. oceanogr. [online]. 2014, vol.49, n.3, pp.577-587. ISSN 0718-1957.  http://dx.doi.org/10.4067/S0718-19572014000300014.

During a sampling on 16-17 January 2013 in the southwest part of Bahía de La Paz, a moderate bloom of the dinoflagellate Ceratoperidinium falcatum was detected. Its abundance varied from 11,200 to 145,400 cells L_1 during this period in seawater temperature at 23°C and salinity of 35.42. The specimens were solitary cells. Few two-celled chains were observed. Young cells were relatively small, 30-70 µm long; 17-36 µm wide, from ovately elongate to fusiform. Mature individuals were 40-190 µm long and 20-36 µm wide. Including C. falcatum, 21 species belonging to 5 orders of unarmored dinoflagellates were identified during this bloom. Four species are new records for the Gulf of California and three are new records for the Pacific coast of Mexico.

Keywords : Unarmored dinoflagellates; proliferation; Ceratoperidinium falcatum; Gulf of California.

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