Titel
Impact of pesticides on marine coral reef foraminifera
Autor*in
Bianca Lintner
ING PAN - Institute of Geological Sciences, Polish Academy of Sciences
... show all
Abstract
Our laboratory study looked into how pesticides affect the foraminifera species Heterostegina depressa and their obligatory algal endosymbionts. We incubated the foraminifera separately with different types of pesticides at varying concentrations (1 %, 0.01 % and 0.0001 %); we included the insecticide Confidor© (active substance: imidacloprid), the fungicide Pronto©Plus (tebuconazole), and the herbicide Roundup© (glyphosate). Our evaluation focused on the symbiont's photosynthetically active area (PA), and the uptake of dissolved inorganic carbon (DIC) and nitrogen (nitrate) to determine the vitality of the foraminifera. Our findings showed that even the lowest doses of the fungicide and herbicide caused irreparable damage to the foraminifera and their symbionts. While the insecticide only deactivated the symbionts (PA = 0) at the highest concentration (1 %), the fungicide, and herbicide caused complete deactivation even at the lowest levels provided (0.0001 %). The fungicide had the strongest toxic effect on the foraminiferal host regarding reduced isotope uptake. In conclusion, all pesticides had a negative impact on the holosymbiont, with the host showing varying degrees of sensitivity towards different types of pesticides.
Stichwort
ForaminiferaPesticidesMarine pollutionLaboratory experiments
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
https://phaidra.univie.ac.at/o:2084203
Erschienen in
Titel
Marine Pollution Bulletin
Band
201
ISSN
0025-326X
Erscheinungsdatum
2024
Verlag
Elsevier BV
Projektnummer
945339 – European Union (all programmes)
Erscheinungsdatum
2024
Zugänglichkeit
Rechteangabe
© 2024 The Authors

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