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Risso, Antonella

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Risso
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Antonella
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2018 - 20202
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Author: Lavigne, Andrea S. ×

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    Monitoreo de microalgas nocivas y monitoreo de ficotoxinas en moluscos en la costa bonaerense
    (2018) Tardivo Kubis, Jonas A.; Lavigne, Andrea S.; Aguiar Juárez, Delfina; Risso, Antonella; Sar, Eugenia Alicia; Sunesen, Inés
    Nuestro grupo de trabajo ejecuta desde 2008 un monitoreo de microalgas y monitoreo de toxinas en moluscos de ambientes costeros bonaerenses, en conjunto con la Dirección Provincial de Pesca (DPP) del Ministerio de Agroindustria de la Provincia de Buenos Aires y el Servicio Nacional de Sanidad y Calidad Agroalimentaria (SENASA). El objetivo del proyecto es detectar tempranamente especies de microalgas nocivas toxígenas o no toxígenas capaces de producir efectos adversos para la salud humana, el medioambiente, la acuicultura y las actividades recreativas en zonas costeras y detectar toxinas en moluscos. Durante el período hemos determinado toxinas PSP asociadas a la presencia en el agua de las microalgas Alexandrium catenella y Gymnodinium catenatum y toxinas DSP asociadas a las microalgas Dinophysis acuminata y D. caudata. La información de estos eventos fue transferida a la DPP, encargada de imponer vedas a la extracción y consumo de moluscos en áreas costeras.
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    Morphological and molecular characterization of Heterocapsa claromecoensis sp. nov. (Peridiniales, Dinophyceae) from Buenos Aires coastal waters (Argentina)
    (2020) Sunesen, Inés; Rodríguez Hernández, Francisco; Tardivo Kubis, Jonas A.; Aguiar Juárez, Delfina; Risso, Antonella; Lavigne, Andrea S.; Tillmann, Urban; Sar, Eugenia Alicia; Wietkamp, Stephan
    A new species of the marine dinophyte genus Heterocapsa Stein is described. Two clonal strains originating from Argentinean coastal waters were examined with light and electron microscopy and LSU and ITS rDNA sequence data were obtained. Heterocapsa claromecoensis sp. nov. is described as a distinctive species with a conical epitheca, a similar sized and rounded hypotheca, a single reticulate chloroplast situated in the periphery of the cell, and a large pyrenoid in the episome, above an ellipsoidal to rounded nucleus in the hyposome. The plate tabulation pattern of Po (pore plate), cp (cover plate), X (X-plate or canal plate), 5ꞌ, 3a, 7ꞌꞌ, 6c, 5s, 5ꞌꞌꞌ, 2ꞌꞌꞌꞌ was as for most other species of Heterocapsa. H. claromecoensis sp. nov. differs from all other species of Heterocapsa by the microarchitecture of two different types of organic body scales, which uniquely were different in height. Phylogenetic trees based on LSU and ITS rDNA sequences placed H. claromecoensis in a separate branch, with a sequence assigned to H. orientalis being the closest match based on LSU rDNA.