Early-life exposure to weathered, unweathered and dispersed oil has persisting effects on ecologically relevant behaviors in sheepshead minnow

Copyright © 2020 Elsevier Inc. All rights reserved..

The Deepwater Horizon oil spill released 3.19 million barrels of crude oil into the Gulf of Mexico, making it the largest oil spill in U.S. history. Weathering and the application of dispersants can alter the solubility of compounds within crude oil, thus modifying the acute toxicity of the crude oil to aquatic life. The primary aim of our study was to determine the lasting impact of early-life stage sheepshead minnow (Cyprinodon variegatus variegatus) exposure to weathered, unweathered and dispersed crude oil on prey capture, male aggression, novel object interaction and global DNA methylation. Embryos were exposed from 1 to 10 dpf to water accommodations of crude oil and were raised to adulthood in artificial seawater. Our results suggest exposure to crude oil did not result in lasting impairment of complex behavioral responses of male sheepshead minnow. Exposure to dispersed weathered oil, however, decreased border dwelling in response to a novel object (i.e. decreased anxiety). Principal component analysis revealed that exposure to weathered oil had no overarching effect, but that unweathered crude oil increased variability in exploratory behaviors but decreased variability in anxiety-associated behaviors. Further work is needed to understand the effects of oil exposure on fish behavior and the potential ecological impact of subtle behavioral changes in fishes.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:205

Enthalten in:

Ecotoxicology and environmental safety - 205(2020) vom: 01. Dez., Seite 111289

Sprache:

Englisch

Beteiligte Personen:

Philibert, Danielle A [VerfasserIn]
Lyons, Danielle D [VerfasserIn]
Tierney, Keith B [VerfasserIn]

Links:

Volltext

Themen:

Behavior
Crude oil
Fish
Journal Article
Petroleum
Water Pollutants, Chemical

Anmerkungen:

Date Completed 23.10.2020

Date Revised 23.10.2020

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.ecoenv.2020.111289

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM315212128