Artículo
DOMOIC acid, Pseudo-nitzschia spp and potential vectors at the base of the pelagic food web over the northern Patagonian coast, Southwestern Atlantic
Hoffmeyer, Mónica S.; Dutto, María Sofía
; Berasategui, Anabela Anhi
; Garcia, Maximiliano Darío
; Pettigrosso, Rosa Elsa; Almandoz, Gastón O.; D'agostino, Valeria Carina
; García, Tami Mailén
; Fabro Cerreia Fus, Elena Ines
; Paparazzo, Flavio Emiliano
; Solís, Miriam; Williams, Gabriela Noemí
; Esteves, José Luis; Krock, Bernd
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Fecha de publicación:
09/2020
Editorial:
Elsevier Science
Revista:
Journal Of Marine Systems
ISSN:
0924-7963
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Plankton composition and density, and domoic acid (DA) content in microplankton and mesozooplankton were assessed over the northern Patagonian coastal shelf in late austral summer 2013. Maximum values of DA in these two plankton fractions as well as maximum densities of both Pseudo-nitzschia spp. (mainly the toxigenic P. australis) and DA potential vectors were only detected on the southern coast of San Matías Gulf and the eastern coast of Valdés Peninsula. In this zone, waters were characterized by low temperature, high nitrate, and intermediate values of silicic acid and phosphate. Based on the high association between the DA values recorded and the values of either microand mesozooplankton grazer density or biomass, we inferred that DA transfer from Pseudo-nitzschia spp. occurred largely through the small copepods Euterpina acutifrons and Oithona nana, Calanidae nauplii and Calanidae copepodites, Noctiluca scintillans, and euphausiid developmental stages. Small copepods, Calanidae nauplii and copepodites, and cladocerans were proposed as novel DA vectors although this suggestion requires experimental confirmation. This study provides the first lines of evidence of the co-occurrence of Pseudo-nitzschia spp. blooms with DA production and accumulation in mesozooplanktonic grazers at the base of the food web and of the environmental and oceanographic conditions that seem to favor these processes over the northern Patagonian shelf coasts.
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Articulos(CESIMAR)
Articulos de CENTRO PARA EL ESTUDIO DE SISTEMAS MARINOS
Articulos de CENTRO PARA EL ESTUDIO DE SISTEMAS MARINOS
Citación
Hoffmeyer, Mónica S.; Dutto, María Sofía; Berasategui, Anabela Anhi; Garcia, Maximiliano Darío; Pettigrosso, Rosa Elsa; et al.; DOMOIC acid, Pseudo-nitzschia spp and potential vectors at the base of the pelagic food web over the northern Patagonian coast, Southwestern Atlantic; Elsevier Science; Journal Of Marine Systems; 212; 9-2020
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