Impacts of hypoxic events surpass those of future ocean warming and acidification

Nature Ecology & Evolution, Journal Year: 2021, Volume and Issue: 5(3), P. 311 - 321

Published: Jan. 11, 2021

Language: Английский

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Ocean acidification adversely influences metabolism, extracellular pH and calcification of an economically important marine bivalve, Tegillarca granosa

Marine Environmental Research, Journal Year: 2017, Volume and Issue: 125, P. 82 - 89

Published: Feb. 2, 2017

Language: Английский

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The impact of environmental acidification on the microstructure and mechanical integrity of marine invertebrate skeletons

Conservation Physiology, Journal Year: 2019, Volume and Issue: 7(1)

Published: Jan. 1, 2019

Abstract Ocean acidification (OA), from seawater uptake of anthropogenic CO2, has a suite negative effects on the ability marine invertebrates to produce and maintain their skeletons. Increased organism pCO2 causes hypercapnia, an energetically costly physiological stress. OA alters carbonate chemistry, limiting available form calcium (CaCO3) minerals used build The reduced saturation state CaCO3 also corrosion structures. Global change is accelerating coastal driven by land-run off (e.g. acid soil leachates, tannic acid). Building maintaining biomaterials in face changing climate will depend balance between calcification dissolution. Overall, response environmental acidification, many calcifiers less biomineral so have smaller body size. Studies skeleton development echinoderms molluscs across life stages show stunting effect OA. For corals, linear extension may be maintained, but at expense dense biomineral. Conventional metrics quantify growth need augmented characterisation changes structure mechanical integrity caused acidification. Scanning electron microscopy microcomputed tomography tube worms sea urchins exposed experimental (laboratory) natural (vents, run off) with greater porosity larger void space. bivalves, crystal deposition more chaotic both ocean Biomechanics tests reveal that these result weaker, fragile skeletons, compromising vital protective roles. Vulnerabilities differ among taxa level. Climate warming potential ameliorate some make matters worse. integrative morphology-ecomechanics approach key understanding how biominerals perform climate.

Language: Английский

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CO2-driven ocean acidification weakens mussel shell defense capacity and induces global molecular compensatory responses

Chemosphere, Journal Year: 2019, Volume and Issue: 243, P. 125415 - 125415

Published: Nov. 19, 2019

Language: Английский

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Climate Change and Bivalve Mass Mortality in Temperate Regions

Reviews of Environmental Contamination and Toxicology, Journal Year: 2019, Volume and Issue: unknown, P. 109 - 129

Published: Jan. 1, 2019

Language: Английский

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Metabolomic and transcriptomic profiling reveals the alteration of energy metabolism in oyster larvae during initial shell formation and under experimental ocean acidification

Scientific Reports, Journal Year: 2020, Volume and Issue: 10(1)

Published: April 9, 2020

Abstract Marine bivalves secrete calcified shells to protect their soft bodies from predation and damages, which is of great importance for survival, the safety coastal ecosystem. In recent years, larval shell formation marine has been severely affected by ocean acidification (OA), previous study indicated that OA might affect such process disrupting endogenous energy metabolism. Developmental stages trochophore D-shape larvae are extremely important initial in oyster since a was formed cover chitin one. present study, metabolomic transcriptomic approaches were employed investigate metabolism during (prodissoconch I, PDI shell) under experimental treatment. Totally 230 chemical compounds identified dataset, most highly expressed “middle” stage (early larvae) critical Several as glucose, glutarylcarnitine (C5), β-hydroxyisovaleroylcarnitine, 5-methylthioadenosine (MTA), myristoleate (14:1n5) palmitoleate (16:1n7) identified, involved metabolic processes including amino acid oxidation, glycolysis, pentose phosphate pathway fatty addition, mRNA expressions genes related protein metabolism, lipid degradation, calcium transport organic matrix activities significantly down-regulated upon OA. These results collectively suggested required coming could be inhibited OA, alter allocation energy. Insufficient supply then suppressed mobilization resulted failure or delay formation.

Language: Английский

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Transcriptomic profiling of adaptive responses to ocean acidification

Molecular Ecology, Journal Year: 2017, Volume and Issue: 26(21), P. 5974 - 5988

Published: Aug. 21, 2017

Abstract Some populations of marine organisms appear to have inherent tolerance or the capacity for acclimation stressful environmental conditions, including those associated with climate change. Sydney rock oysters from B2 breeding line exhibit resilience ocean acidification ( OA ) at physiological level. To understand molecular basis this resilience, we analysed gill transcriptome that had been exposed near‐future projected pH over two consecutive generations. Our results suggest distinctive performance in face is mediated by selective expression genes involved multiple cellular processes. Subsequent high‐throughput qPCR revealed some these transcriptional changes are exclusive and so may be their . The intracellular processes differentially abundant primarily involve control cell cycle maintenance homeostasis. These enable prevent apoptosis resulting oxidative damage alleviate effects through regulation cycle. Comparative analysis conditioning across sequential generations supported contention wild‐type different trajectories changing gene responding findings reveal broad set underlying transgenerational potential a calcifier. Identifying mechanisms stress can uncover survive thrive rapidly ocean.

Language: Английский

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Ocean acidification and warming effects on the physiology, skeletal properties, and microbiome of the purple-hinge rock scallop

Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology, Journal Year: 2019, Volume and Issue: 240, P. 110579 - 110579

Published: Sept. 16, 2019

Language: Английский

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Climate change stressors cause metabolic depression in the blue mussel,Mytilus edulis, from the Gulf of Maine

Limnology and Oceanography, Journal Year: 2016, Volume and Issue: 61(5), P. 1705 - 1717

Published: May 19, 2016

The interactive effects of multiple stressors associated with global climate change will expose marine organisms to physiological challenges potentially exceeding their current abilities acclimatize. As a result the ecological rapidly increasing magnitude, and variability, environmental combined unknown capacity acclimatize (= phenotypic plasticity) or genetically adapt, remains uncertain for many organisms. In Gulf Maine (GOM), rocky intertidal harbors blue mussel, Mytilus edulis, an important ecosystem engineer in these communities. Using mussel collections Southwest GOM from different tidal heights common garden experiment, mussels show significant, phenotypically plastic, height parameters related metabolic stress tolerance. When are then experimentally exposed independent thermal ocean acidification, several biomarkers (e.g., oxidative stress, HSP70, protein synthesis) elevated treatments higher temperatures, but when lower pH consistent future predictions markers evidence depression. ecosystems, exposure acidification has been hypothesized as factor that would narrow window tolerance invertebrates such mussels. data presented here provide supporting hypothesis GOM, facing one greatest rates environment.

Language: Английский

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Random forest assessment of correlation between environmental factors and genetic differentiation of populations: Case of marine mussels Mytilus

Oceanologia, Journal Year: 2018, Volume and Issue: 61(1), P. 131 - 142

Published: Aug. 30, 2018

The novel machine learning technique Random Forest (RF) was used to test if the genetic differentiation of populations marine species may be related any key environmental variables known shape distributions. study performed in North and Baltic Sea characterized by strong gradients factors almost continuous distributions Mytilus mussel populations. Assessment identity using four nuclear DNA markers, previously published single nucleotide polymorphism (SNP) data. A general pattern cline variation observed with increasing trossulus share towards eastern Sea. Average allele rose 61% Höga Kusten, Gulf Bothnia. All samples revealed a introgression edulis limited M. through Danish Straits. studied described 67 68% variability frequencies trossulus. Salinity defined over 50% gene spp. Changes along this gradient were not gradual but instead significant shift from dominance found at salinity 12 PSU. Water temperature trophic status sea area had only moderate association frequencies. obtained results showed that can successfully for finding correlations between defining functional form these linkages.

Language: Английский

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