AI Article Synopsis
- Climate models indicate that the Arctic will experience longer periods without sea ice in the next decade, leading to more shipping and oil exploration.
- This study investigates the impact of crude oil exposure on adult polar cod's physiological traits essential for their survival and reproduction.
- Results show that while the lipid composition in liver and gonad tissues changes, polar cod do not suffer significant effects on growth and survival from the tested crude oil doses, suggesting their resilience to dietary exposure.
Article Abstract
Climate models predict extended periods with sea-ice free Arctic waters during the next decade, which will allow more shipping activity and easier access to petroleum resources. Increased industrial activities raise concerns about the biological effects of accidental petroleum release on key species of the Arctic marine ecosystem, such as the polar cod (Boreogadus saida). This study examines effects on physiological traits related to the fitness of adult polar cod, such as growth, survival, and lipid parameters. Fish were exposed to environmentally-relevant crude oil doses through their diet over an 8-month period, concurrent with reproductive development. In liver tissue, lipid class composition differed between treatments while in gonad tissue, lipid class composition varied between sexes, but not treatments. Crude oil did not affect growth and survival, which indicated that polar cod were relatively robust to dietary crude oil exposure at doses tested (0.11-1.14 μg crude oil/g fish/day) in this study.
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| http://dx.doi.org/10.1016/j.marenvres.2021.105545 | DOI Listing |
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