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Boletim do Instituto Oceanográfico

versão impressa ISSN 0373-5524

Bol. Inst. Oceanogr. vol.35 no.1 São Paulo  1987

http://dx.doi.org/10.1590/S0373-55241987000100004 

ARTIGOS

 

Quistes planctonicos de dinoficeas en areas de plataforma del Atlantico Sudoccidental. I. Reporte taxonomico de la família Peridiniaceae Ehrenberg

 

Planktonic dinoflagellates cysts in areas from the southwestern Atlantic shelf. I. Taxonomic report on the Peridiniaceae Ehrenberg

 

 

Rut Akselman

(Instituto Nacional de Investigacion y Desarrollo Pesquero, C.C. 175, 7600 Mar del Plata, Argentina)

 

 


Descritores: Dinoflagellata, Cistos, Taxonomia, Distribuição geográfica, Protoperidinium, Zygabikodinium, Atlântico Sul Ocidental.


ABSTRACT

This work constitutes a first contribution to the taxonomy of dinoflagellate resting cysts in planktonic samples of this region, being studied nine species of Protoperidinium Bergh and Zybabikodinium Loeblich Jr. et Loeblich III of the family Peridiniaceae. Incubation experiments with living material and parental thecae containing resting cysts in fixed samples allowed setting up of the cyst-theca relationship in P. obtusum (Karst.) Parke et Dodge, and also that verification for P. excentricum (Pauls.) Bal., P. claudicans (Pauls.) Bal., P. oblongum (Aur.) Parke et Dodge and Z. lanticalatum Loeb. Jr. et Loeb. III. P. conicides (Pauls.) Bal., P. antcuiciticum (Schimp.) Bal. P. pentagonum (Gran) Bal. and P. compressum (Abe) Bal. cysts were ' studied offering also an analysis for thecal sulcal plates for the latter species. Geographic distribution and temperature and salinity data for samples with living cysts are given.

Descriptors: Dinoflagellata, Cysts, Taxonomy, Geographical distribution, Protoperidinium, Zygabikodinium, Southwestern Atlantic.


 

 

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(Recibido en 08-04-1987; aceptado en 04-08-1987)

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