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    Benthic foraminiferal ultrastructural alteration induced by heavy metals

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    Frontalini et al 2017 final version with Figs and table.pdf (2.542Mb)
    Date
    2017-10
    Author
    Frontalini, Fabrizio  Concept link
    Nardelli, Maria Pia  Concept link
    Curzi, Davide  Concept link
    Martín-González, Ana  Concept link
    Sabbatini, Anna  Concept link
    Negri, Alessandra  Concept link
    Losada, Maria Teresa  Concept link
    Gobbi, Pietro  Concept link
    Coccioni, Rodolfo  Concept link
    Bernhard, Joan M.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/9454
    As published
    https://doi.org/10.1016/j.marmicro.2017.10.009
    Keyword
     Protist; Pollution; Miliolid; Ultrastructure; Cytoplasm; Ammonia; Pseudotriloculina 
    Abstract
    Heavy metals are known to cause deleterious effects on biota because of their toxicity, persistence and bioaccumulation. Here, we briefly document the ultrastructural changes observed in the miliolid foraminifer Pseudotriloculina rotunda (d'Orbigny in Schlumberger, 1893) and in the perforate calcareous species Ammonia parkinsoniana (d'Orbigny, 1839) induced by exposure to one of three heavy metals (zinc, lead, or mercury). The exposure of these two benthic foraminiferal species to the selected heavy metals appear to promote cytological alterations and organelle degeneration. These alterations include a thickening of the inner organic lining, an increase in number and size of lipid droplets, mitochondrial degeneration, and degradation vacuoles and residual body proliferation. Some of these alterations, including the thickening of the inner organic lining and the proliferation of lipids, might represent defense mechanisms against heavy metal-induced stress.
    Description
    © The Author(s), 2017. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Marine Micropaleontology 138 (2018): 83-89, doi:10.1016/j.marmicro.2017.10.009.
    Collections
    • Geology and Geophysics (G&G)
    Suggested Citation
    Preprint: Frontalini, Fabrizio, Nardelli, Maria Pia, Curzi, Davide, Martín-González, Ana, Sabbatini, Anna, Negri, Alessandra, Losada, Maria Teresa, Gobbi, Pietro, Coccioni, Rodolfo, Bernhard, Joan M., "Benthic foraminiferal ultrastructural alteration induced by heavy metals", 2017-10, https://doi.org/10.1016/j.marmicro.2017.10.009, https://hdl.handle.net/1912/9454
     

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