The difference between temperate and tropical saltwater species’ acute sensitivity to chemicals is relatively small

Wang, Zhen; Kwok, Kevin W.H.; Lui, Gilbert C.S.; Zhou, Guang‐Jie; Lee, Jae‐Seong; Lam, Michael; Leung, Kenneth M.Y.

doi:10.1016/j.chemosphere.2013.10.066

Cited by 59 publications

(41 citation statements)

References 32 publications

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“…Water temperature interacting with other physiochemical, biological, and anthropogenic factors is generally deemed as the primary threat to marine organisms (Boeckman and Bidwell 2006;Heugens et al 2001Heugens et al , 2003. However, water quality criteria (WQC) of chemicals are primarily derived from laboratory-driven toxicity data obtained at a fixed temperature (i.e., an optimal or an annual average water temperature; Lau et al 2014;Wang et al 2014) which may underestimate the potential impact of other temperatures on chemical toxicity to the aquatic organisms. It is, therefore, questionable if the current WQC could adequately protect marine organisms from chemical exposure under various temperature scenarios.…”

Section: Introductionmentioning

confidence: 99%

Temperature-dependent toxicities of four common chemical pollutants to the marine medaka fish, copepod and rotifer

Leung

Bao

et al. 2014

Ecotoxicology

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We hypothesize that chemical toxicity to marine ectotherms is the lowest at an optimum temperature (OT) and it exacerbates with increasing or decreasing temperature from the OT. This study aimed to verify this hypothetical temperature-dependent chemical toxicity (TDCT) model through laboratory experiments. Acute toxicity over a range of temperatures was tested on four commonly used chemicals to three marine ectotherms. Our results confirmed that toxicities, in terms of 96-h LC50 (median lethal concentration; for the marine medaka fish Oryzias melastigma and the copepod Tigriopus japonicus) and 24-h LC50 (for the rotifer Brachionus koreanus), were highly temperature-dependent, and varied between test species and between study chemicals. The LC50 value of the fish peaked at 20 °C for copper (II) sulphate pentahydrate and triphenyltin chloride, and at 25 °C for dichlorophenyltrichloroethane and copper pyrithione, and decreased with temperature increase or decrease from the peak (i.e., OT). However, LC50 values of the copepod and the rotifer generally showed a negative relationship with temperature across all test chemicals. Both copepod and rotifer entered dormancy at the lowest temperature of 4 °C. Such metabolic depression responses in these zooplanktons could reduce their uptake of the chemical and hence minimize the chemical toxicity at low temperatures. Our TDCT model is supported by the fish data only, whereas a simple linear model fits better to the zooplankton data. Such species-specific TDCT patterns may be jointly ascribed to temperature-mediated changes in (1) the physiological response and susceptibility of the marine ectotherms to the chemical, (2) speciation and bioavailability of the chemical, and (3) toxicokinetics of the chemical in the organisms.

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Section: Introductionmentioning

confidence: 99%

Temperature-dependent toxicities of four common chemical pollutants to the marine medaka fish, copepod and rotifer

Leung

Bao

et al. 2014

Ecotoxicology

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“…Water quality guideline ( rely on extrapolation from temperate information, despite this the regulatory standards are widely thought to be geographic-specific (Kwok et al, 2007;Wang et al, 2014). However, there is a high uncertainty on whether or not such an extrapolation from the temperate information to generate tropical WQGs can adequately protect tropical ecosystems.…”

Section: Country/regionmentioning

confidence: 97%

“…The SSDs were then constructed following the procedures described in Wheeler et al (2002a) and Wang et al (2014). In brief, toxicity data were ranked in ascending order and assigned percentiles, and then fitted with seven parametric regression models including log-normal, log-logistic, Gompertz, FishereTippett, Weibull, log-triangular and Burr Type III.…”

Section: Construction Of Temperate and Tropical Ssdsmentioning

confidence: 99%

Effects of unionised ammonia on tropical freshwater organisms: Implications on temperate-to-tropic extrapolation and water quality guidelines

Wang

Leung

2015

Environmental Pollution

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“…Whilst these observations of temperature-mediated toxicity are not new (e.g., Lewis and Horning, 1991;Heugens et al, 2003;Khan et al, 2006;Prato et al, 2008;Barbieri et al, 2013), to the extent that authors have suggested the use of a correction factor in applying LC 50 values for different temperature environments (Wang et al, 2014), the moderating effects of temperature may not be consistent within the real world (see Chapman et al, 2006). Moreover data indicate that the determination of any "temperature correction factor" will be different at high hydrostatic pressure for each metal in question and would have to be empirically determined for each case, and potentially for each biological species (see also: Kiffney and Clements, 1996;Gonzalez-Rey et al, 2007;Wang et al, 2014;for example).…”

Section: Mineral Resource Toxicity To Individual Organisms Cannot Be mentioning

confidence: 99%

“…Moreover data indicate that the determination of any "temperature correction factor" will be different at high hydrostatic pressure for each metal in question and would have to be empirically determined for each case, and potentially for each biological species (see also: Kiffney and Clements, 1996;Gonzalez-Rey et al, 2007;Wang et al, 2014;for example).…”

Section: Mineral Resource Toxicity To Individual Organisms Cannot Be mentioning

confidence: 99%

Identifying Toxic Impacts of Metals Potentially Released during Deep-Sea Mining—A Synthesis of the Challenges to Quantifying Risk

et al. 2017

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In January 2017, the International Seabed Authority released a discussion paper on the development of Environmental Regulations for deep-sea mining (DSM) within the Area Beyond National Jurisdiction (the "Area"). With the release of this paper, the prospect for commercial mining in the Area within the next decade has become very real. Moreover, within nations' Exclusive Economic Zones, the exploitation of deep-sea mineral ore resources could take place on very much shorter time scales and, indeed, may have already started. However, potentially toxic metal mixtures may be released at sea during different stages of the mining process and in different physical phases (dissolved or particulate). As toxicants, metals can disrupt organism physiology and performance, and therefore may impact whole populations, leading to ecosystem scale effects. A challenge to the prediction of toxicity is that deep-sea ore deposits include complex mixtures of minerals, including potentially toxic metals such as copper, cadmium, zinc, and lead, as well as rare earth elements. Whereas the individual toxicity of some of these dissolved metals has been established in laboratory studies, the complex and variable mineral composition of seabed resources makes the a priori prediction of the toxic risk of DSM extremely challenging. Furthermore, although extensive data quantify the toxicity of metals in solution in shallow-water organisms, these may not be representative of the toxicity in deep-sea organisms, which may differ biochemically and physiologically and which will experience those toxicants under conditions of low temperature, high hydrostatic pressure, and potentially altered pH. In this synthesis, we present a summation of recent advances in our understanding of the potential toxic impacts of metal exposure to deep-sea meio-to megafauna at low temperature and high pressure, and consider the limitation of deriving lethal limits based on the paradigm Hauton et al.Identifying Toxic Impacts of Deep-Sea Mining of exposure to single metals in solution. We consider the potential for long-term and farfield impacts to key benthic invertebrates, including the very real prospect of sub-lethal impacts and behavioral perturbation of exposed species. In conclusion, we advocate the adoption of an existing practical framework for characterizing bulk resource toxicity in advance of exploitation.

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The difference between temperate and tropical saltwater species’ acute sensitivity to chemicals is relatively small

Cited by 59 publications

References 32 publications

Temperature-dependent toxicities of four common chemical pollutants to the marine medaka fish, copepod and rotifer

Temperature-dependent toxicities of four common chemical pollutants to the marine medaka fish, copepod and rotifer

Effects of unionised ammonia on tropical freshwater organisms: Implications on temperate-to-tropic extrapolation and water quality guidelines

Identifying Toxic Impacts of Metals Potentially Released during Deep-Sea Mining—A Synthesis of the Challenges to Quantifying Risk

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