Effects of petrogenic pollutants on North Atlantic and Arctic Calanus copepods: From molecular mechanisms to population impacts.

Autor: Hansen BH; SINTEF Ocean, Climate and Environment, 7465 Trondheim, Norway. Electronic address: bjornhenrik.hansen@sintef.no., Tarrant AM; Woods Hole Oceanographic Institution, Woods Hole, MA, 02543, United States., Lenz PH; University of Hawai'i at Mānoa, Honolulu, HI, 96822, United States., Roncalli V; Stazione Zoologica Anton Dohrn, Naples, Italy., Almeda R; EOMAR-ECOAQUA, University of Las Palmas de Gran Canaria (ULPGC), Canary Islands, Spain., Broch OJ; SINTEF Ocean, Fisheries and New Biomarine Industry, 7465 Trondheim, Norway., Altin D; BioTrix, 7020 Trondheim, Norway; Norwegian University of Science and Technology, Research Infrastructure SeaLab, 7010 Trondheim, Norway., Tollefsen KE; Norwegian Institute for Water Research (NIVA), 0579 Oslo, Norway; Norwegian University of Life Sciences (NMBU), N-1433 Ås, Norway.
Jazyk: angličtina
Zdroj: Aquatic toxicology (Amsterdam, Netherlands) [Aquat Toxicol] 2024 Feb; Vol. 267, pp. 106825. Date of Electronic Publication: 2023 Dec 28.
DOI: 10.1016/j.aquatox.2023.106825
Abstrakt: Oil and gas industries in the Northern Atlantic Ocean have gradually moved closer to the Arctic areas, a process expected to be further facilitated by sea ice withdrawal caused by global warming. Copepods of the genus Calanus hold a key position in these cold-water food webs, providing an important energetic link between primary production and higher trophic levels. Due to their ecological importance, there is a concern about how accidental oil spills and produced water discharges may impact cold-water copepods. In this review, we summarize the current knowledge of the toxicity of petroleum on North Atlantic and Arctic Calanus copepods. We also review how recent development of high-quality transcriptomes from RNA-sequencing of copepods have identified genes regulating key biological processes, like molting, diapause and reproduction in Calanus copepods, to suggest linkages between exposure, molecular mechanisms and effects on higher levels of biological organization. We found that the available ecotoxicity threshold data for these copepods provide valuable information about their sensitivity to acute petrogenic exposures; however, there is still insufficient knowledge regarding underlying mechanisms of toxicity and the potential for long-term implications of relevance for copepod ecology and phenology. Copepod transcriptomics has expanded our understanding of how key biological processes are regulated in cold-water copepods. These advances can improve our understanding of how pollutants affect biological processes, and thus provide the basis for new knowledge frameworks spanning the effect continuum from molecular initiating events to adverse effects of regulatory relevance. Such efforts, guided by concepts such as adverse outcome pathways (AOPs), enable standardized and transparent characterization and evaluation of knowledge and identifies research gaps and priorities. This review suggests enhancing mechanistic understanding of exposure-effect relationships to better understand and link biomarker responses to adverse effects to improve risk assessments assessing ecological effects of pollutant mixtures, like crude oil, in Arctic areas.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 The Author(s). Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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