Sensitivity of a Large and Representative Sample of Antarctic Marine Invertebrates to Metals

Ben J. Kefford, Catherine K. King, Jane Wasley, Martin J. Riddle, Dayanthi Nugegoda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

There are limited data on the sensitivity to contaminants of marine organisms in polar regions. Consequently, assessments of the risk of contaminants to marine biota in polar environments typically include extrapolations from temperate and/or tropical species. This is problematic because the taxonomic composition of organisms differs between polar and temperate/tropical waters, and both the toxicity of chemicals and the physiology of organisms are very different at the stable low temperatures experienced in polar marine systems. Collecting high-quality sensitivity data for a wide range of marine polar organisms using traditional toxicity assessment approaches is a time-consuming and difficult process, especially in remote and hostile environments. We applied a rapid toxicity testing approach, which allowed a much larger number of species to be tested than would be possible with traditional toxicity test methods, albeit with lower replications and fewer exposure concentrations. With this rapid approach, sensitivity estimates are less precise, but more numerous. This is important when constructing species sensitivity distributions (SSDs), which aim to represent the sensitivity of communities. We determined the approximate sensitivity (4- and 10-d median lethal concentration [LC50] values) of a large and representative sample of Antarctic marine invertebrates to copper (Cu), zinc (Zn), and cadmium (Cd). Up to 88 LC50 values (from 88 different taxa) were used in the construction of SSDs. The hazardous concentrations for 1% of taxa (HC1) based on 10-d LC50 values were 37, 346, and 792 μg/L for Cu, Zn, and Cd, respectively. Our results provide a basis for estimating the risk of exposure to metals for a large representative sample of marine polar invertebrates. 

Original languageEnglish
Pages (from-to)1560-1568
Number of pages9
JournalEnvironmental Toxicology and Chemistry
Volume38
Issue number7
Early online date22 Mar 2019
DOIs
Publication statusPublished - Jul 2019

Fingerprint

Aquatic Organisms
Invertebrates
Cadmium
Toxicity
Zinc
invertebrate
Metals
Cold Climate
Toxicity Tests
Biota
metal
toxicity
Copper
cadmium
zinc
Impurities
Temperature
pollutant
Water
Physiology

Cite this

Kefford, Ben J. ; King, Catherine K. ; Wasley, Jane ; Riddle, Martin J. ; Nugegoda, Dayanthi. / Sensitivity of a Large and Representative Sample of Antarctic Marine Invertebrates to Metals. In: Environmental Toxicology and Chemistry. 2019 ; Vol. 38, No. 7. pp. 1560-1568.
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Sensitivity of a Large and Representative Sample of Antarctic Marine Invertebrates to Metals. / Kefford, Ben J.; King, Catherine K.; Wasley, Jane; Riddle, Martin J.; Nugegoda, Dayanthi.

In: Environmental Toxicology and Chemistry, Vol. 38, No. 7, 07.2019, p. 1560-1568.

Research output: Contribution to journalArticle

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KW - Aquatic invertebrates

KW - Invertebrate toxicology

KW - Marine toxicity test

KW - Metal toxicity

KW - Species sensitivity distribution

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