Rev. biol. mar. oceanogr. 46(3): 495-498
Nota Científica

First record of Cochlodinium convolutum and C. helicoides

(Gymnodiniales: Dinophyceae) in the Gulf of California

Ismael Gárate-Lizárraga¹, Federico García-Domínguez¹,
Beatriz Pérez-Cruz² & Jesús Antonio Díaz-Ortiz²

¹Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacional, Apartado postal 592, C.P. 23096, La Paz, B.C.S., México

²Laboratorio Estatal de Salud Pública 'Dr. Galo Soberón y Parra', Boulevard Vicente Guerrero, Esq. Juan R. Escudero s/n, Ciudad Renacimiento, Acapulco, Guerrero, México

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The naked marine dinoflagellates Cochlodinium convolutum and C. helicoides are reported for the first time in the Gulf of California. They occurred in seawater at 21-24.5°C. Cochlodinium convolutum was found in both bottle and net samples; its abundance ranged from 400-2200 cells L^–1. A total of 96 specimens of C. convolutum and 23 specimens of C. helicoides were examined from the net phytoplankton samples. A short description is given for each species, and photomicrographs provide information about the main morphological characteristics. 

Key words: Dinoflagellates, phytoplankton, Mexico 

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