Ocean acidification dampens physiological stress response to warming and contamination in a commercially-important fish (Argyrosomus regius)

Sampaio, Eduardo; Lopes, Ana Rita; Francisco, Samuel; Paula, José Ricardo; Pimentel, Marta S.; Maulvault, Ana Luísa; Repolho, Tiago; Grilo, Tiago F.; Pousão-Ferreira, Pedro; Marques, António; Rosa, Rui

doi:10.1016/j.scitotenv.2017.11.059

Cited by 64 publications

(47 citation statements)

References 76 publications

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“…They are above recommended regulatory standards for human health. However, in contrast to previous data that showed high concentrations of Hg in A. regius muscles, a recent study by [52] revealed that under heat stress, meager would be weakly concentrated in mercury, which would induce a relatively moderate effect of the contaminant on human health. The fact that meager is a very resilient species that adapts easily to environmental changes [53] may explain these lower effects following exposure.…”

Section: Trace Elementscontrasting

confidence: 72%

Trace Elements and Fatty Acid Profile of Argyrosomus regius (Asso, 1801) from Mediterranean Aquaculture

Amoussou

Marengo

Durieux

et al. 2019

Biol Trace Elem Res

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Although Argyrosomus regius (Asso, 1801) counts among the most appreciated and increasingly consumed fish species in Europe, little information is available on its flesh quality. This research concerns both healthy aquatic resource diversification and good nutritional quality. It is the first study to evaluate the quality of A. regius flesh from Mediterranean aquaculture. It aims to assess the concentration of 19 trace elements and to determine the fatty acid profile of this fish farmed in the Mediterranean Sea and to discuss human exposure risks. The nutritional intake of oligoelements (selenium (Se), zinc (Zn), and chromium (Cr)) and the mean concentrations of contaminants (arsenic (As), barium (Ba), cadmium (Cd), lead (Pb), and tin (Sn)) in A. regius muscles are, respectively, above and below recommended regulatory standards set by the international legislation. Additionally, the low fat content in its muscle mass and its high level of docosahexaenoic acid (C22: 6 n-3; DHA) and, to a lesser extent, eicosapentaenoic acid (C20: 5 n-3; EPA) confers satisfying nutritional qualities. This study allowed to conclude that meager can be considered as a source of seafood with good nutritional qualities for human health.

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Section: Trace Elementscontrasting

confidence: 72%

Trace Elements and Fatty Acid Profile of Argyrosomus regius (Asso, 1801) from Mediterranean Aquaculture

Amoussou

Marengo

Durieux

et al. 2019

Biol Trace Elem Res

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“…Co-occurring acidification (CO 2 + Hg) decreased the accumulation of Hg in Argyrosomus regius and decreased the activity of oxidative stress markers i.e. catalase, superoxide dismutase (SOD), and glutathione S-transferase activities in the gills [43]. These findings may give insights into the adaptive mechanisms of the gills to pollution in relation to projected ocean acidification, and consequently, on the future of marine cage culture.…”

Section: Carbon Dioxidementioning

confidence: 85%

Mucosal Barrier Functions of Fish under Changing Environmental Conditions

Cabillon¹,

Lazado

2019

Fishes

108

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The skin, gills, and gut are the most extensively studied mucosal organs in fish. These mucosal structures provide the intimate interface between the internal and external milieus and serve as the indispensable first line of defense. They have highly diverse physiological functions. Their role in defense can be highlighted in three shared similarities: their microanatomical structures that serve as the physical barrier and hold the immune cells and the effector molecules; the mucus layer, also a physical barrier, contains an array of potent bioactive molecules; and the resident microbiota. Mucosal surfaces are responsive and plastic to the different changes in the aquatic environment. The direct interaction of the mucosa with the environment offers some important information on both the physiological status of the host and the conditions of the aquatic environment. Increasing attention has been directed to these features in the last year, particularly on how to improve the overall health of the fish through manipulation of mucosal functions and on how the changes in the mucosa, in response to varying environmental factors, can be harnessed to improve husbandry. In this short review, we highlight the current knowledge on how mucosal surfaces respond to various environmental factors relevant to aquaculture and how they may be exploited in fostering sustainable fish farming practices, especially in controlled aquaculture environments.

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“…Considering that, after seven days of elimination, EF values were approximately or below zero in the brain and muscle, only the EF values obtained in the liver were considered in data analysis. The percentage of Hg tolerable weekly intake (TWI) achieved with the consumption of contaminated fish species was estimated under the present and future climate conditions, using the empirical data acquired in the present study, as well as data reported in previous studies using two ecologically distinct pelagic species (Argyrososmus regius [25] and Dicentrachus labrax [43]). To do so, the TWI value of 4 µg•kg −1 body weight (bw) [4] was used, and a weekly consumption of 150 g of fish by adults with an average body weight, bw, of 70 kg [4] was considered.…”

Section: Discussionmentioning

confidence: 99%

“…In line with these impacts, previous studies on marine species exposed to MeHg reported altered molecular responses, including enhanced oxidative stress, tissue damage [21], endocrine disruption, and genotoxicity [22]. Furthermore, since brain tissues are relatively permeable to MeHg [23], this compound is neurotoxic, promoting negative impacts in vertebrate species cholinergic systems, including alterations of acetylcholinesterase (AchE) activity [24,25], as well as sensory and cognitive impairments [26].…”

Section: Introductionmentioning

confidence: 85%

“…Total mercury (THg) extraction from samples (fish tissues and feed, n = 3), as well as methylmercury (MeHg), was performed according to the methodologies previously described [25,26,43]. Both THg and MeHg concentrations were determined by atomic absorption spectrometry, using an automatic Hg analyzer (Leco apparatus AMA 254, LECO, St. Joseph, MI, USA).…”

Section: Total Hg and Mehg Determinationmentioning

confidence: 99%

See 1 more Smart Citation

Mercury in Juvenile Solea senegalensis: Linking Bioaccumulation, Seafood Safety, and Neuro-Oxidative Responses under Climate Change-Related Stressors

et al. 2020

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Mercury (Hg) is globally recognized as a persistent chemical contaminant that accumulates in marine biota, thus constituting an ecological hazard, as well as a health risk to seafood consumers. Climate change-related stressors may influence the bioaccumulation, detoxification, and toxicity of chemical contaminants, such as Hg. Yet, the potential interactions between environmental stressors and contaminants, as well as their impacts on marine organisms and seafood safety, are still unclear. Hence, the aim of this work was to assess the bioaccumulation of Hg and neuro-oxidative responses on the commercial flat fish species Solea senegalensis (muscle, liver, and brain) co-exposed to dietary Hg in its most toxic form (i.e., MeHg), seawater warming (ΔT°C = +4 °C), and acidification (pCO2 = +1000 µatm, equivalent to ΔpH = −0.4 units). In general, fish liver exhibited the highest Hg concentration, followed by brain and muscle. Warming enhanced Hg bioaccumulation, whereas acidification decreased this element’s levels. Neuro-oxidative responses to stressors were affected by both climate change-related stressors and Hg dietary exposure. Hazard quotient (HQ) estimations evidenced that human exposure to Hg through the consumption of fish species may be aggravated in tomorrow’s ocean, thus raising concerns from the seafood safety perspective.

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Ocean acidification dampens physiological stress response to warming and contamination in a commercially-important fish (Argyrosomus regius)

Cited by 64 publications

References 76 publications

Trace Elements and Fatty Acid Profile of Argyrosomus regius (Asso, 1801) from Mediterranean Aquaculture

Trace Elements and Fatty Acid Profile of Argyrosomus regius (Asso, 1801) from Mediterranean Aquaculture

Mucosal Barrier Functions of Fish under Changing Environmental Conditions

Mercury in Juvenile Solea senegalensis: Linking Bioaccumulation, Seafood Safety, and Neuro-Oxidative Responses under Climate Change-Related Stressors

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