Thermal bottlenecks in the life cycle define climate vulnerability of fish

Science, Journal Year: 2020, Volume and Issue: 369(6499), P. 65 - 70

Published: July 2, 2020

Some cope better than others Increasingly, research is revealing how organisms may, or may not, adapt to a changing climate. Understanding the limitations placed by species's physiology can help determine whether it has an immediate potential deal with rapid change. Many studies have looked at physiological tolerance climate change in fishes, results indicating range of responses. Dahlke et al. conducted meta-analysis explore life stage influence ability tolerate temperature (see Perspective Sunday). They found that embryos and breeding adult fishes are much more susceptible those other stages this factor must therefore be considered evaluations susceptibility. Science , issue p. 65 ; see also 35

Language: Английский

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Combined effects of ocean warming and acidification on marine fish and shellfish: A molecule to ecosystem perspective

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 802, P. 149807 - 149807

Published: Aug. 21, 2021

Language: Английский

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The circumpolar impacts of climate change and anthropogenic stressors on Arctic cod (Boreogadus saida) and its ecosystem

Elementa Science of the Anthropocene, Journal Year: 2023, Volume and Issue: 11(1)

Published: Jan. 1, 2023

Arctic cod (Boreogadus saida) is the most abundant forage fish in Ocean. Here we review habitats, distribution, ecology, and physiology to assess how climate change other anthropogenic stressors are affecting this key species. This identifies vulnerabilities for different life stages across entire distribution range of cod. We explore impact environmental (abiotic biotic) on with a regional perspective scenario up year 2050 identify knowledge gaps constraining predictions. Epipelagic eggs larvae more vulnerable than adults. Increased water temperatures, sea-ice decline, altered freshwater input, acidification, changing prey field, increased interspecific competition, new predators, pollution principal that will affect populations. Detrimental effects likely be greater regions characterized by advection warmer Atlantic Pacific waters. In contrast, may benefit from ocean warming colder areas High Arctic. The risk fisheries moderate primarily limited bycatch. Overall, decrease suitable habitat an associated decline total biomass predicted. seas, relative abundance within community fluctuate accordance cold warm periods. A reduced negatively abundance, physiological condition certain whereas some predators successfully adapt boreal diet. Regional management measures recognize critical role required ensure activities do not exacerbate impacts marine ecosystems. Ultimately, mitigation loss only achieved through global reduction carbon emissions.

Language: Английский

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Possible future scenarios in the gateways to the Arctic for Subarctic and Arctic marine systems: II. prey resources, food webs, fish, and fisheries

ICES Journal of Marine Science, Journal Year: 2021, Volume and Issue: 78(9), P. 3017 - 3045

Published: June 8, 2021

Abstract Climate change impacts are pronounced at high latitudes, where warming, reduced sea-ice-cover, and ocean acidification affect marine ecosystems. We review climate on two major gateways into the Arctic: Bering Chukchi seas in Pacific Barents Sea Fram Strait Atlantic. present scenarios of how changes physical environment prey resources may commercial fish populations fisheries these high-latitude systems to help managers stakeholders think about possible futures. Predicted include shifts spatial distribution boreal species, a shift from larger, lipid-rich zooplankton smaller, less nutritious prey, with detrimental effects fishes that depend high-lipid for overwinter survival, benthic- pelagic-dominated food webs implications upper trophic levels, survival commercially important shellfish waters increasingly acidic. expected result disruptions existing fisheries, emergence new challenges managing transboundary stocks, conflicts among resource users. Some be irreversible, more severe, or occur frequently under anthropogenic than associated natural variability, posing additional management challenges.

Language: Английский

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Heat induces multiomic and phenotypic stress propagation in zebrafish embryos

PNAS Nexus, Journal Year: 2023, Volume and Issue: 2(5)

Published: May 1, 2023

Heat alters biology from molecular to ecological levels, but may also have unknown indirect effects. This includes the concept that animals exposed abiotic stress can induce in naive receivers. Here, we provide a comprehensive picture of signatures this process, by integrating multiomic and phenotypic data. In individual zebrafish embryos, repeated heat peaks elicited both response burst accelerated growth followed slowdown concert with reduced responses novel stimuli. Metabolomes media treated vs. untreated embryos revealed candidate metabolites including sulfur-containing compounds lipids. These transcriptomic changes receivers related immune response, extracellular signaling, glycosaminoglycan/keratan sulfate, lipid metabolism. Consequently, non-heat-exposed (exposed only) experienced catch-up swimming performance. The combination development most, mediated apelin signaling. Our results prove heat-induced propagation toward receivers, inducing phenotypes comparable those resulting direct exposure, utilizing distinct pathways. Group-exposing nonlaboratory line, independently confirm glycosaminoglycan biosynthesis-related gene chs1 mucus glycoprotein prg4a, functionally connected metabolite classes sugars phosphocholine, are differentially expressed hints at production Schreckstoff-like cues leading further within groups, which animal welfare implications for aquatic populations changing climate.

Language: Английский

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Ontogeny of the Osmoregulatory Capacity of Teleosts and the Role of Ionocytes

Frontiers in Marine Science, Journal Year: 2020, Volume and Issue: 7

Published: Aug. 21, 2020

Whilst osmoregulation in the adult teleost fish has been extensively studied and significant advances have made recent years, much less information exists regarding during early stages of development teleosts. Adult maintain their blood osmolality a narrow physiological range, i.e. ≈ 280 - 360 mOsm kg-1, through combined osmoregulatory capabilities several sites branchial chambers, skin, digestive system urinary organs. However embryonic post-embryonic range 240 540 mOsmol kg-1 capacity is restricted to cutaneous ionocytes located on tegument with transference function occurring life developing tract, organs tissues which they support. This review will discuss that occurs throughout teleosts its role conserving homeostasis, focusing form related mechanisms, ionoregulatory cell or ionocyte, outlining different roles functions ionocyte types relative environment, freshwater seawater, plasticity spatio-temporal changes distribution occur ontogeny.

Language: Английский

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Impaired hatching exacerbates the high CO2 sensitivity of embryonic sand lance Ammodytes dubius

Marine Ecology Progress Series, Journal Year: 2022, Volume and Issue: 687, P. 147 - 162

Published: Feb. 3, 2022

Rising oceanic partial pressure of CO 2 (pCO ) could affect many traits in fish early life stages, but only few species to date have shown direct -induced survival reductions. This might partly be because from less -variable, offshore environments higher latitudes are currently underrepresented the literature. We conducted new experimental work on northern sand lance Ammodytes dubius , a key forage Northwest Atlantic banks, which was recently suggested highly -sensitive. In complementary trials, we produced embryos wild, Gulf Maine spawners and reared them at several pCO levels (~400-2000 µatm) combination with static (6, 7, 10°C) dynamic (10→5°C) temperature treatments. Again, consistently observed large, reductions hatching success (-23% 1000 µatm, -61% ~2000 µatm), effects were temperature-independent. To distinguish during development potential impacts itself, some switched between high control treatments just prior hatch. indeed altered patterns, consistent -impaired hypothesis. High also delayed day first hatch one trial peak other, where later-hatched larvae similar size progressively endogenous energy reserves. For context, extracted seasonal projections for Stellwagen Bank (Gulf Maine) regional ensemble simulations, indicated reduction 71% contemporary by 2100. The species’ unusual sensitivity has large ecological scientific ramifications that warrant future in-depth research.

Language: Английский

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Social context prevents heat hormetic effects against mutagens during fish development

FEBS Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Since stress can be transmitted to congeners via social metabolites, it is paramount understand how the context of abiotic influences aquatic organisms' responses global changes. Here, we integrated transcriptomic and phenotypic zebrafish embryos a UV damage/repair assay following scenarios heat stress, its their combination. Heat preceding exposure had hormetic effect through cellular response DNA repair, rescuing and/or protecting from damage. However, experiencing within negated this molecular lowered larval fitness. We discuss basis interindividual chemical transmission animal groups as another layer complexity environmental stressors.

Language: Английский

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Acidification affects the early development of Colombian endemic fish Prochilodus magdalenae

Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology, Journal Year: 2025, Volume and Issue: unknown, P. 111875 - 111875

Published: May 1, 2025

Language: Английский

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Developmental series of gene expression clarifies maternal mRNA provisioning and maternal-to-zygotic transition in a reef-building coral

BMC Genomics, Journal Year: 2021, Volume and Issue: 22(1)

Published: Nov. 11, 2021

Abstract Background Maternal mRNA provisioning of oocytes regulates early embryogenesis. transcripts are degraded as zygotic genome activation (ZGA) intensifies, a phenomenon known the maternal-to-zygotic transition (MZT). Here, we examine gene expression over nine developmental stages in Pacific rice coral, Montipora capitata , from eggs and embryos at 1, 4, 9, 14, 22, 36 h-post-fertilization (hpf), well swimming larvae (9d), adult colonies. Results Weighted Gene Coexpression Network Analysis revealed four peaks, identifying maternal complement, two waves MZT, expression. ontology enrichment mRNAs dominated by cell division, methylation, biosynthesis, metabolism, protein/RNA processing transport functions. The first MZT wave occurs ~4-14 hpf is enriched terms related to transcription. In contrast, functional second wave, or ZGA, 22 hpf-9dpf, includes ion/peptide signaling. Finally, for functions signaling, transport. Our proposed timing further supported enzymes involved transcriptional repression (Kaiso) (Sox2), which peak 14 hpf, respectively. Further, DNA methylation writing (DNMT3a) removing (TET1) remain stable past ~4 suggesting that methylome programming before 4 hpf. Conclusions high-resolution insight into coral provides essential baseline information understand parental carryover effects sensitivity success under increasing environmental stress.

Language: Английский

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