Social competition in red drum (Sciaenops ocellatus) is influenced by crude oil exposure

Aquatic Toxicology
Alexis J KhursigaraAndrew J Esbaugh

Abstract

The present study examined impacts of crude oil exposure on dyad competition in juvenile red drum. Following the 2010 Deepwater Horizon oil spill, it has become well established that oil exposure can constrain maximum metabolic rate, reduce aerobic scope and exercise performance in marine fish. Aerobic scope is one of the physiological characteristics that is a known determinant of dominance in fish social hierarchy formation. As such, oil exposure may predispose individuals to subordinate social status, complete with the concomitant ecological costs. We tested this hypothesis on the gregarious Gulf of Mexico species, the red drum (Sciaenops ocellatus). Using a standard dyad, one-on-one, test design, we first assessed the parameters - including size and aerobic scope- that predict social dominance. Of the tested parameters, only aerobic scope was predictive of social dominance, with dominant individuals consistently having higher aerobic scopes than subordinates. Hierarchy formation between individuals exposed to one of two oil concentrations (5.7 ± 0.5 and 9.0 ± 0.2 μg l-1 ΣPAH50) and unexposed conspecifics were then investigated. As hypothesized, fish exposed to both oil concentrations were more likely to be subordinate than ...Continue Reading

Citations

Sep 4, 2020·The Science of the Total Environment·Alexis J KhursigaraAndrew J Esbaugh
Aug 14, 2020·The Science of the Total Environment·Kerri Lynn Ackerly, Andrew J Esbaugh
Jul 13, 2021·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Angelina M DichieraAndrew J Esbaugh
Aug 27, 2019·Environmental Science & Technology·Lela S SchlenkerMartin Grosell
Mar 1, 2019·Environmental Science & Technology·Elvis Genbo XuDaniel Schlenk
Sep 21, 2021·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Ryan TakeshitaAilsa J Hall

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