TITLE

INFECTION OF CERATIUM FURCA BY THE PARASITIC DINOFLAGELLATE AMOEBOPHRYA CERATII (AMOEBOPHRYIDAE) IN THE MEXICAN PACIFIC

AUTHOR(S)
Gárate Lizárraga, Ismael; Siqueiros Beltrones, David A.
PUB. DATE
December 2003
SOURCE
Acta Botanica Mexicana;2003, Issue 65, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Parasitism within dinoflagellates is a widespread and well-documented phenomenon. Parasitic dinoflagellates of the genus Amoebophrya commonly infect free-living toxic, and nontoxic dinoflagellates species which may cause harmful red tides. Infections of Ceratium furca by A. ceratii were observed in red tides samples collected in the northwest coast of Baja California between 30°01′05″ N, 115°51′16″ W and 31°09′33″ N, 116°31′09″ W. This is the first record of this particular parasitic dinoflagellate in Mexican Pacific waters. There were mainly three dinoflagellate species causing this particular seawater discoloration: a Gymnodiniumlike dinoflagellate, Ceratium furca, and Akashiwo sanguinea. These reached concentrations as high as 560 000, 762 600, and 395 400 cells L-1, respectively. During the bloom, surface water temperature ranged between 13 and 17°C. Seawater salinity ranged from 33.2 to 33.8 psu. About 1.5% of the individuals of C. furca observed were infected by the intracellular parasite dinoflagellate Amoebophrya ceratii. This parasite was observed mainly inside specimens of Ceratium furca and very few specimens of Ceratium macroceros. In general, individuals of C. furca were partially or totally deformed. Infections by A. ceratii could delay or inhibit the dinoflagellate blooms as infected dinoflagellates become reproductively incompetent.
ACCESSION #
20234350

 

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