Contrasting responses to salinity and future ocean acidification in arctic populations of the amphipod Gammarus setosus

Brown, James O.; Whiteley, N.M.; Bailey, Allison; Graham, Helen; Hop, Haakon; Rastrick, Samuel P. S.

doi:10.1016/j.marenvres.2020.105176

Cited by 9 publications

(8 citation statements)

References 66 publications

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“…This strong influence of salinity on amphipod performance is also illustrated by the results of Egilsdottir et al ( 2009 ) who found out that lowering the salt content, more than lowering pH, has a negative impact on embryonic development in a (temperate) intertidal amphipod species. Similarly, Brown et al ( 2020 ) found lower salinity to reduce energy budgets (and thus in the longer term growth and reproduction) in an Arctic amphipod species.…”

Section: Discussionmentioning

confidence: 81%

“…There are several studies that investigated effects of decreasing pH on marine amphipods (Benítez et al, 2016 ; Brown et al, 2020 ; Egilsdottir et al, 2009 ; Goulding et al, 2017 ; Hauton et al, 2009 ; Passarelli et al, 2017 ; Schram et al, 2016 ), but some species appear to be more resilient than others (Passarelli et al, 2017 ). Crustaceans may not be as much affected by ocean acidification as mollusks or echinoderms, because their exoskeletal CaCO 3 is mostly in the more stable form of calcite rather than the more soluble aragonite form (Whiteley, 2011 and citations therein).…”

Section: Discussionmentioning

confidence: 99%

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Niche breadth and biodiversity change derived from marine Amphipoda species off Iceland

Lörz

Oldeland²,

Kaiser

2022

Ecology and Evolution

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Understanding the ecological requirements and thresholds of individual species is crucial to better predict potential outcomes of climate change on species distribution. In particular, species optima and lower and upper limits along resource gradients require attention. Based on Huisman‐Olff‐Fresco (HOF) models, we determined species‐specific responses along gradients of nine environmental parameters including depth in order to estimate niche attributes of 30 deep‐sea benthic amphipods occurring around Iceland. We, furthermore, examined the relationships between niche breadth, occupancy, and geographic range assuming that species with a wider niche are spatially more widely dispersed and vice versa. Overall, our results reveal that species react very differently to environmental gradients, which is independent of the family affiliation of the respective species. We could infer a strong relationship between occupancy and geographic range and also relate this to differences in niche breadth; that is specialist species with a narrow niche had a more limited distribution and may thus be more threatened by changing environmental conditions than generalist species, which are more widespread. Given the preponderance of rare species in the deep sea, this implies that many species could be at risk. However, this must be carefully weighed against geographical data gaps in this area, given that many deep‐sea areas are severely undersampled and the true distribution of most species is unknown. After all, our results underline that an accurate taxonomic classification is of crucial importance, without which ecological niche properties cannot be determined and which is hence fundamental for the assessment and understanding of changes in biodiversity in the face of increasing human perturbations.

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Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Niche breadth and biodiversity change derived from marine Amphipoda species off Iceland

Lörz

Oldeland²,

Kaiser

2022

Ecology and Evolution

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“…Finally, C. glacialis nauplii have shown upregulation of Na + /H + -antiporters independent of ATPase as a response to OA 16 , which one could hypothesise also may be the case in the copepodites. Arctic populations of the amphipod Gammarus setosus also do not experience increased ATPase activity during OA conditions 46 . It seems that C. glacialis faces OA without any ATP dependent acid/base regulation activity.…”

Section: Discussionmentioning

confidence: 99%

Ocean acidification causes fundamental changes in the cellular metabolism of the Arctic copepod Calanus glacialis as detected by metabolomic analysis

Thor

Vermandele

Bailey

et al. 2022

Sci Rep

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Using a targeted metabolomic approach we investigated the effects of low seawater pH on energy metabolism in two late copepodite stages (CIV and CV) of the keystone Arctic copepod species Calanus glacialis. Exposure to decreasing seawater pH (from 8.0 to 7.0) caused increased ATP, ADP and NAD+ and decreased AMP concentrations in stage CIV, and increased ATP and phospho-L-arginine and decreased AMP concentrations in stage CV. Metabolic pathway enrichment analysis showed enrichment of the TCA cycle and a range of amino acid metabolic pathways in both stages. Concentrations of lactate, malate, fumarate and alpha-ketoglutarate (all involved in the TCA cycle) increased in stage CIV, whereas only alpha-ketoglutarate increased in stage CV. Based on the pattern of concentration changes in glucose, pyruvate, TCA cycle metabolites, and free amino acids, we hypothesise that ocean acidification will lead to a shift in energy production from carbohydrate metabolism in the glycolysis toward amino acid metabolism in the TCA cycle and oxidative phosphorylation in stage CIV. In stage CV, concentrations of most of the analysed free fatty acids increased, suggesting in particular that ocean acidification increases the metabolism of stored wax esters in this stage. Moreover, aminoacyl-tRNA biosynthesis was enriched in both stages indicating increased enzyme production to handle low pH stress.

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“…Long-term exposure to salinity stimulation can result in disorders in immune and antioxidant capacity of organisms. [ 19 ]. Numerous reports have been published on the impact of salinity on the immune defense and physiological and biochemical indices in crustaceans.…”

Section: Introductionmentioning

confidence: 99%

Regulation and Response Mechanism of Acute Low-Salinity Stress during Larval Stages in Macrobrachium rosenbergii Based on Multi-Omics Analysis

Li,

Xu,

Shen

et al. 2024

IJMS

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Macrobrachium rosenbergii is an essential species for freshwater economic aquaculture in China, but in the larval process, their salinity requirement is high, which leads to salinity stress in the water. In order to elucidate the mechanisms regulating the response of M. rosenbergii to acute low-salinity exposure, we conducted a comprehensive study of the response of M. rosenbergii exposed to different salinities’ (0‰, 6‰, and 12‰) data for 120 h. The activities of catalase, superoxide dismutase, and glutathione peroxidase were found to be significantly inhibited in the hepatopancreas and muscle following low-salinity exposure, resulting in oxidative damage and immune deficits in M. rosenbergii. Differential gene enrichment in transcriptomics indicated that low-salinity stress induced metabolic differences and immune and inflammatory dysfunction in M. rosenbergii. The differential expressions of MIH, JHEH, and EcR genes indicated the inhibition of growth, development, and molting ability of M. rosenbergii. At the proteomic level, low salinity induced metabolic differences and affected biological and cellular regulation, as well as the immune response. Tyramine, trans-1,2-Cyclohexanediol, sorbitol, acetylcholine chloride, and chloroquine were screened by metabolomics as differential metabolic markers. In addition, combined multi-omics analysis revealed that metabolite chloroquine was highly correlated with low-salt stress.

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Contrasting responses to salinity and future ocean acidification in arctic populations of the amphipod Gammarus setosus

Cited by 9 publications

References 66 publications

Niche breadth and biodiversity change derived from marine Amphipoda species off Iceland

Niche breadth and biodiversity change derived from marine Amphipoda species off Iceland

Ocean acidification causes fundamental changes in the cellular metabolism of the Arctic copepod Calanus glacialis as detected by metabolomic analysis

Regulation and Response Mechanism of Acute Low-Salinity Stress during Larval Stages in Macrobrachium rosenbergii Based on Multi-Omics Analysis

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