Is Ocean Acidification Really a Threat to Marine Calcifiers? A Systematic Review and Meta‐Analysis of 980+ Studies Spanning Two Decades

Small, Год журнала: 2022, Номер 18(35)

Опубликована: Авг. 7, 2022

Abstract Ocean acidification is considered detrimental to marine calcifiers, but mounting contradictory evidence suggests a need revisit this concept. This systematic review and meta‐analysis aim critically re‐evaluate the prevailing paradigm of negative effects ocean on calcifiers. Based 5153 observations from 985 studies, many calcifiers (e.g., echinoderms, crustaceans, cephalopods) are found be tolerant near‐future (pH ≈ 7.8 by year 2100), coccolithophores, calcifying algae, corals appear sensitive. Calcifiers generally more sensitive at larval stage than adult stage. Over 70% in growth calcification non‐negative, implying acclimation capacity acidification. can mediated phenotypic plasticity physiological, mineralogical, structural, molecular adjustments), transgenerational plasticity, increased food availability, or species interactions. The results suggest that impacts less deleterious initially thought as their adaptability has been underestimated. Therefore, forthcoming era research, it advocated studying how organisms persist important they perish, future hypotheses experimental designs not constrained within effects.

Язык: Английский

---

Epigenetic plasticity enables copepods to cope with ocean acidification

Nature Climate Change, Год журнала: 2022, Номер 12(10), С. 918 - 927

Опубликована: Сен. 29, 2022

Abstract Plasticity enhances species fitness and survival under climate change. Ocean acidification poses a potential threat to copepods, major zooplankton group that serves as key link between the lower higher trophic levels in marine environment, yet mechanisms underlying different adaptive responses remain poorly understood. Here we show although elevated CO 2 can exert negative effects on reproduction of Paracyclopina nana , multigenerational plasticity enable recovery after three generations. By integrating methylome transcriptome with draft genome undertaking DNA methylation treatments, demonstrate vital role epigenetic modifications ocean identify regions associated reproductive resilience. Our results might play an important enhancing copepods failing consider phenotypic could lead overestimation species’ vulnerabilities.

Язык: Английский

---

Transgenerational effects of intertidal environment on physiological phenotypes and DNA methylation in Pacific oysters

The Science of The Total Environment, Год журнала: 2023, Номер 871, С. 162112 - 162112

Опубликована: Фев. 9, 2023

Язык: Английский

---

Ocean acidification drives gut microbiome changes linked to species-specific immune defence

Aquatic Toxicology, Год журнала: 2023, Номер 256, С. 106413 - 106413

Опубликована: Фев. 19, 2023

Язык: Английский

---

The prokaryotic and eukaryotic microbiome of Pacific oyster spat is shaped by ocean warming but not acidification

Applied and Environmental Microbiology, Год журнала: 2024, Номер 90(4)

Опубликована: Март 11, 2024

ABSTRACT Pacific oysters ( Magallana gigas, a.k.a. Crassostrea gigas ), the most widely farmed oysters, are under threat from climate change and emerging pathogens. In part, their resilience may be affected by microbiome, which, in turn, influenced ocean warming acidification. To understand these impacts, we exposed early-development oyster spat to different temperatures (18°C 24°C) p CO 2 levels (800, 1,600, 2,800 µatm) a fully crossed design for 3 weeks. Under all conditions, microbiome changed over time, with large decrease relative abundance of potentially pathogenic ciliates Uronema marinum ) treatments time. The composition differed significantly temperature, but not acidification, indicating that microbiomes can altered is resilient acidification our experiments. Microbial taxa implying adaptive strategies ecological specializations among microorganisms. Additionally, small proportion (~0.2% total taxa) relatively abundant microbial were core constituents (>50% occurrence samples) across temperatures, levels, or Some taxa, including A4b bacteria members family Saprospiraceae phyla Chloroflexi (syn. Chloroflexota Bacteroidetes Bacteroidota respectively, as well protists genera Labyrinthula Aplanochytrium class Labyrinthulomycetes , Pseudoperkinsus tapetis Ichthyosporea suggesting they play an important, albeit unknown, role maintaining structural functional stability response These findings highlight flexibility environmental changes. IMPORTANCE economically important species oyster, production depends on healthy spat. health productivity associated microbiota; yet, studies have scrutinized effects temperature prokaryotic eukaryotic Here, show both and, first surprisingly changes sensitive warming. potential implications survival amid underscore need cascading productivity.

Язык: Английский

---

Epigenetic‐associated phenotypic plasticity of the ocean acidification‐acclimated edible oyster in the mariculture environment

Molecular Ecology, Год журнала: 2022, Номер 32(2), С. 412 - 427

Опубликована: Окт. 31, 2022

For marine invertebrates with a pelagic-benthic life cycle, larval exposure to ocean acidification (OA) can affect adult performance in response another environmental stressor. This carry-over effect has the potential alter phenotypic traits. However, molecular mechanisms that mediate "OA"-triggered effects have not been explored despite such information being key improving species fitness and management strategies for aquafarming. study integrated genome-wide DNA methylome transcriptome examine epigenetic modification-mediated OA impacts on traits of ecologically commercially important oyster Crassostrea hongkongensis under field conditions. Larvae C. were exposed control pH 8.0 low 7.4 conditions, mimicking near future scenario their habitat, before outplanted as post-metamorphic juveniles at two mariculture sites contrasting stressors 9 months. The was found persistent growth survival trade-off juveniles, although beneficial or adverse depended conditions sites. Site-specific plasticity demonstrated diverse methylation-associated gene expression profile, signal transduction endocrine system most common highly enriched functions. Highly methylated exons prevailed genes related general metabolic endocytic responses these are evolutionarily conserved various OA. These results suggest oysters prior history had ability trigger rapid local adaptive via modification cope multiple field.

Язык: Английский

---

Transcriptomic insights into cessation of clam embryonic development following transgenerational exposure to ocean acidity extreme

Marine Environmental Research, Год журнала: 2024, Номер 198, С. 106561 - 106561

Опубликована: Май 21, 2024

Язык: Английский

---

Ocean acidification in the Gulf of Mexico: Drivers, impacts, and unknowns

Progress In Oceanography, Год журнала: 2022, Номер 209, С. 102882 - 102882

Опубликована: Окт. 4, 2022

Ocean acidification (OA) has resulted in global-scale changes ocean chemistry, which can disturb marine organisms and ecosystems. Despite its extensively populated coastline, many marine-dependent communities, valuable economies, the Gulf of Mexico (GOM) remains a relatively understudied region with respect to acidification. In general, warm waters GOM are better buffered from compared higher latitude seas, yet long-term been documented several regions. OA within is recognized as spatially variable, particularly coastal zone where numerous physical biogeochemical processes contribute carbonate chemistry dynamics. The historical progression entire difficult assess because only few dedicated monitoring sites have recently established, full-water column observations limited. However, environmental drivers on smaller scales that affect were found include freshwater, nutrient, discharge large rivers; warming, circulation residence times; episodic extreme weather events. ecosystems provide essential services, including coastline protection carbon dioxide removal, habitats for species economically ecologically important. organismal ecosystem responses not well constrained due lack studies examining specific effects regionally relevant under contemporary projected conditions. Tackling vast number remaining scientific unknowns this be coordinated through regional capacity networks, such Coastal Acidification Network (GCAN), working achieve system-wide understanding impacts. Here we synthesize current peer-reviewed literature across ocean-estuarine continuum identify critical knowledge, research, gaps limit our environmental, ecological, socioeconomic impacts

Язык: Английский

---

Surviving the Anthropocene: The Resilience of Marine Animals to Climate Change

CRC Press eBooks, Год журнала: 2023, Номер unknown, С. 35 - 80

Опубликована: Авг. 11, 2023

If marine organisms are to persist through the Anthropocene, they will need be resilient, but what is resilience, and can resilience of build within a single lifetime or over generations?The aim this review evaluate capacity animals in time unprecedented global climate change.Resilience an ecosystem, society, organism recover from stress.Marine change phenotypic plasticity adaptation.Phenotypic involves changes physiology, morphology, behaviour which improve response new environment without altering their genotype.Adaptation evolutionary longer process, occurring many generations selection tolerant genotypes shift average phenotype population towards fitness peak.Research on has concentrated responses specific species stressors.It unknown whether adaptation including molluscs, echinoderms, polychaetes, crustaceans, corals, fish rapid enough for pace change.

Язык: Английский

---

Ocean Acidification Triggers Cell Signaling, Suppress Immune and Calcification in the Pacific Oyster Larvae

Frontiers in Marine Science, Год журнала: 2021, Номер 8

Опубликована: Дек. 13, 2021

Elevated carbon dioxide levels in ocean waters, an anthropogenic stressor, can alter the chemical equilibrium of seawater through a process called acidification (OA). The resultant reduction pH be detrimental during early developmental stages commercially important edible Pacific oyster Crassostrea gigas ; ability larvae to join population is likely compromised by declining pH. Given this threat, it study molecular mechanisms that these organisms use overcome OA stress at gene expression level. Here, we performed transcriptome profiling following exposure ambient (8.1) and reduced (7.4) pre-settlement growth period (i.e., 18 d post fertilization) using RNA-seq with Illumina sequencing technology. In total, 1,808 differentially expressed genes (DEGs) were identified, 1,410 which matched BLAST against Swiss-Prot database. Gene ontology classification showed most DEGs related ribosomal, calcium ion binding, cell adhesion apoptotic processes. Pathway enrichment analysis revealed low enhanced energy production organelle biogenesis but prominently suppressed several immune response pathways. Moreover, activation MAPK signaling pathway was observed along inhibition Wnt, VEGF, ErbB pathways, highlighting fact initiation responses given priority over larval development or shell when cope conclusion, our demonstrated unique approach studying OA, not only provides comprehensive insights into underlying tolerance CO 2 -driven decreases also supplies valuable genomic resource for further studies species.

Язык: Английский

---