Reduced pH increases mortality and genotoxicity in an Arctic coastal copepod, Acartia longiremis.

Animals Copepoda DNA Damage Hydrogen-Ion Concentration Seawater Water Pollutants, Chemical / toxicity
Crustacea DNA damage fast micromethod oxidative stress zooplankton

Journal

Aquatic toxicology (Amsterdam, Netherlands)
ISSN: 1879-1514
Titre abrégé: Aquat Toxicol
Pays: Netherlands
ID NLM: 8500246

Informations de publication

Date de publication:
Oct 2021
Historique:
received: 23 07 2021
revised: 29 08 2021
accepted: 30 08 2021
pubmed: 14 9 2021
medline: 29 9 2021
entrez: 13 9 2021
Statut: ppublish

Résumé

This study investigates DNA damage and mortality in an Arctic marine copepod after long-term exposure to lowered pH. Acartia longiremis were collected from northern Norway and incubated in ambient pH 8.1, and reduced pH 7.6 and 7.2 over 3-4 weeks. Cumulative mortality was significantly elevated in the lowered pH treatments in all exposures. The fluorescence-based fast micromethod for analysis of DNA strand breaks and alkali-labile sites was modified for use on crustaceous zooplankton. DNA damage initially increased in the lowered pH treatments, decreasing after >14 days, and DNA damage was significantly higher in lowered pH conditions. This method is ideal for investigating oxidative stress and genotoxicity response to low pH in Arctic marine copepods exposed to future ocean acidification conditions.

Identifiants

DOI: 10.1016/j.aquatox.2021.105961 PMID: 34517224
pubmed: 34517224
pii: S0166-445X(21)00220-4
doi: 10.1016/j.aquatox.2021.105961
pii:
doi:

Substances chimiques

Water Pollutants, Chemical 0

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

105961

Informations de copyright

Copyright © 2021. Published by Elsevier B.V.

Auteurs

Claudia Halsband (C)

Akvaplan-niva, Fram Centre, Tromsø, Norway.

Mascha F Dix (MF)

Scottish Association for Marine Science, PA37 1QA, Dunstaffnage, UK.

Kristine Hopland Sperre (KH)

Akvaplan-niva, Fram Centre, Tromsø, Norway.

Helena C Reinardy (HC)

Scottish Association for Marine Science, PA37 1QA, Dunstaffnage, UK; University Centre in Svalbard, P.O. Box 156, Longyearbyen, Svalbard, Norway. Electronic address: helena.reinardy@sams.ac.uk.

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Classifications MeSH

questionsmedicales.fr › Eucaryotes › Animaux › Reduced pH increases mortality and...
questionsmedicales.fr › Eucaryotes › Animaux › Invertébrés › Arthropodes › Crustacea › Copepoda › Reduced pH increases mortality and...
questionsmedicales.fr › Phénomènes génétiques › Altération de l'ADN › Reduced pH increases mortality and...
questionsmedicales.fr › Phénomènes chimiques › Concentration en ions d'hydrogène › Reduced pH increases mortality and...
questionsmedicales.fr › Phénomènes biologiques › Phénomènes écologiques et environnementaux › Eaux salées › Eau de mer › Reduced pH increases mortality and...
questionsmedicales.fr › Actions chimiques et utilisations › Actions toxiques › Polluants environnementaux › Polluants de l'eau › Polluants chimiques de l'eau › Reduced pH increases mortality and...