Los fenómenos de marea roja y toxicidad de moluscos bivalvos en el Mar Argentino

Carreto, J.I. and Lasta, M.L. and Negri, R.M. and Benavides, H.R. (1981) Los fenómenos de marea roja y toxicidad de moluscos bivalvos en el Mar Argentino. Mar del Plata, Argentina, Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), (Contribuciones INIDEP, 399)

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Abstract

Two unusual blooms of dinoflagellates appeared in the Argentine Continental Shelf in spring/summer period of 1980 and 1981, but these differed, one from the other. The first was an intense red-tide with which were associated no signs of toxicity, whereas the second, although; not showing special coloration, was associated with (and doubtless the cause of) intense toxicity in bivalves of the Gulfs of San Matías and San José and of the shelf waters off Península Valdés; the death of two fishermen was atributed to the latter. The first bloom developed as an unusual surface concentration of the predatory dinoflagellate Noctiluca scintillans. It was supposed that this concentration was produced by a particular combination of processes of circulation of water masses. The second bloom was characterizaed by high concentrations of Gonyalax excavata. Investigations at the time determined that toxins in molluscs of the area correasponded to what is called "paralytic shellfish poison". The bloom of G. excavata was associated with a front between well mixed and well stratified water masses. The maximum toxicity centre occured in the mussel bank "Constanza" (42°23'27"S and 62°45'66"W) which coincides with the front referred to above. (PDF contains 93 pages)

Item Type: Monograph or Serial Issue
Title: Los fenómenos de marea roja y toxicidad de moluscos bivalvos en el Mar Argentino
Personal Creator/Author:
CreatorsEmail
Carreto, J.I.jcarreto@inidep.edu.ar
Lasta, M.L.
Negri, R.M.
Benavides, H.R.
Series Name: Contribuciones INIDEP
Number: 399
Date: 1981
Publisher: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
Place of Publication: Mar del Plata, Argentina
Issuing Agency: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Mar del Plata, Argentina
Uncontrolled Keywords: red tides, marea roja, Argentina
Subjects: Biology
Oceanography
Item ID: 4779
Depositing User: Librarian Gabriela Silvoni
Date Deposited: 08 Feb 2011 13:07
Last Modified: 29 Sep 2011 15:54
URI: http://aquaticcommons.org/id/eprint/4779

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