Physiological impacts of elevated carbon dioxide and ocean acidification on fish

AJP Regulatory Integrative and Comparative Physiology, Journal Year: 2014, Volume and Issue: 307(9), P. R1061 - R1084

Published: Aug. 28, 2014

Most fish studied to date efficiently compensate for a hypercapnic acid-base disturbance; however, many recent studies examining the effects of ocean acidification on have documented impacts at CO 2 levels predicted occur before end this century. Notable neurosensory and behavioral endpoints, otolith growth, mitochondrial function, metabolic rate demonstrate an unexpected sensitivity current-day near-future levels. explanations these seem center increases in Pco HCO 3 − that body during pH compensation balance; few measured parameters environmentally relevant or directly related them reported negative endpoints. This compensatory response is well documented, but noted variation dynamic regulation transport pathways across species, exposure levels, duration suggests multiple strategies may be utilized cope with hypercapnia. Understanding changes ion gradients extracellular intracellular compartments could provide basis predicting explaining interspecies variation. Based analysis existing literature, present review presents clear message cause significant physiological systems, suggesting does not necessarily confer tolerance as downstream consequences tradeoffs occur. It remains difficult assess if acclimation responses abrupt exposures will translate fitness over longer timescales. Nonetheless, identifying mechanisms processes subject selective pressure one important components assessing adaptive capacity.

Language: Английский

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Animal behaviour shapes the ecological effects of ocean acidification and warming: moving from individual to community‐level responses

Global Change Biology, Journal Year: 2015, Volume and Issue: 22(3), P. 974 - 989

Published: Dec. 23, 2015

Abstract Biological communities are shaped by complex interactions between organisms and their environment as well with other species. Humans rapidly changing the marine through increasing greenhouse gas emissions, resulting in ocean warming acidification. The first response animals to environmental change is predominantly modification of behaviour, which turn affects species ecological processes. Yet, many climate studies ignore animal behaviour. Furthermore, our current knowledge how global alters behaviour mostly restricted single species, life phases stressors, leading an incomplete view coinciding stressors can affect that structure biological communities. Here, we review on effects acidification animals. We demonstrate pervasive a wide range critical behaviours determine persistence success then evaluate several approaches studying acidification, identify gaps need be filled, better understand will populations altered behaviours. Our provides synthesis far‐reaching consequences behavioural changes could have for ecosystems environment. Without considering limit ability forecast impacts provide insights aid management strategies.

Language: Английский

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Are global warming and ocean acidification conspiring against marine ectotherms? A meta-analysis of the respiratory effects of elevated temperature, high CO₂and their interaction

Conservation Physiology, Journal Year: 2016, Volume and Issue: 4(1), P. cow009 - cow009

Published: Jan. 1, 2016

With the occurrence of global change, research aimed at estimating performance marine ectotherms in a warmer and acidified future has intensified. The concept oxygen- capacity-limited thermal tolerance, which is inspired by Fry paradigm bell-shaped increase–optimum–decrease-type response aerobic scope to increasing temperature, but also includes proposed negative synergistic effects elevated CO2 levels, been suggested as unifying framework. objectives this meta-analysis were assess following: (i) generality relationship between absolute (AAS) temperature; (ii) what extent affects resting oxygen uptake MO2rest AAS; (iii) whether there an interaction temperature CO2. behavioural are briefly discussed. In 31 out 73 data sets (both acutely exposed acclimated), AAS increased remained above 90% maximum, whereas clear optimum was observed remaining 42 sets. Carbon dioxide caused significant rise only 18 125 sets, decrease 25, it four increase two. analysis did not reveal evidence for overall correlation with regime or duration treatment. When had effect, additive rather than interactions most common and, interestingly, they even interacted antagonistically on AAS. could complicate experimental determination respiratory performance. Overall, reveals heterogeneity responses that accordance idea single principle cannot be ignored attempts model predict impacts warming ocean acidification ectotherms.

Language: Английский

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Marine animal behaviour in a high CO2 ocean

Marine Ecology Progress Series, Journal Year: 2015, Volume and Issue: 536, P. 259 - 279

Published: July 20, 2015

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 536:259-279 (2015) - DOI: https://doi.org/10.3354/meps11426 REVIEW animal behaviour in a high CO2 ocean Jeff C. Clements*, Heather L. Hunt Department of Biology, University New Brunswick Saint John Campus, 100 Tucker Park Road, E2L 4L5, NB, Canada *Corresponding author: [email protected] ABSTRACT: Recently, effects acidification (OA) on marine have garnered considerable attention, as they can impact biological interactions and, turn, ecosystem structure and functioning. We reviewed current published literature OA synthesize understanding how may behaviour, elucidate critical unknowns, provide suggestions for future research. Although studies focused equally vertebrates invertebrates, vertebrate primarily coral reef fishes, contrast broader diversity invertebrate taxa studied. A quantitative synthesis direction magnitude change behaviours from conditions under scenarios suggests negative impacts that vary depending species, ecosystem, behaviour. The interactive co-occurring environmental parameters with increasing elicit different those observed elevated alone. 12% incorporated multiple factors, only one study has examined carbonate system variability animal. Altered GABAA receptor functioning appears responsible many behavioural responses; however, this mechanism is unlikely be universal. recommend new focus determining context drivers variability, mechanisms governing association between acid-base regulation This knowledge could explain species-specificity responses lend unifying theory KEY WORDS: Animal · Carbon dioxide Climate ecology Ocean climate Full text pdf format PreviousCite article as: Clements JC, HL ocean. Mar Ecol Prog Ser 536:259-279. Export citation Tweet linkedIn Cited by Published Vol. 536. Online publication date: September 29, 2015 Print ISSN: 0171-8630; 1616-1599 Copyright © Inter-Research.

Language: Английский

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Living in a high CO₂ world: a global meta‐analysis shows multiple trait‐mediated fish responses to ocean acidification

Ecological Monographs, Journal Year: 2018, Volume and Issue: 88(3), P. 320 - 335

Published: Feb. 22, 2018

Abstract Understanding how marine organisms will be affected by global change is of primary importance to ensure ecosystem functioning and nature contributions people. This study meets the call for addressing life‐history traits mediate effects ocean acidification on fish. We built a database overall trait‐mediated responses teleost fish future CO 2 levels searching scientific literature. Using meta‐analytical approach, we investigated projected IPCC 2050–2070 2100 eco‐physiology behavior from 320 contrasts 42 species, stemming polar tropical regions. Moreover, since may experience mosaic carbonate chemistry in coastal environments (e.g., estuaries, upwelling zones intertidal habitats), which have higher p values than open waters, assessed additional 103 21 species using well above projections. Under mid‐century end‐of‐century emission scenarios, found multiple ‐dose‐dependent calcification, resting metabolic rate, yolk, behavioral performances, along with increased predation risk decreased foraging, particularly larvae. Importantly, many considered not confer tolerance elevated far‐reaching ecological consequences population replenishment community structure likely occur. Extreme projections showed mortality while growth, metabolism, yolk were unaffected. exposures short‐term experiments mortality, turn longer‐term exposures. Whatever considered, some key biological processes reproduction, development, habitat choice) critically understudied. Fish are an important resource livelihoods communities component stability ecosystems. Given evidenced here, stress need fill knowledge gap eco‐physiological expand number duration studies multi‐generational, stressor warming, hypoxia, fishing), interactions better elucidate complex ecosystem‐level changes these might alter provisioning services.

Language: Английский

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CO₂-induced ocean acidification increases anxiety in Rockfish via alteration of GABA_Areceptor functioning

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2013, Volume and Issue: 281(1775), P. 20132509 - 20132509

Published: Nov. 27, 2013

The average surface pH of the ocean is dropping at a rapid rate due to dissolution anthropogenic CO 2 , raising concerns for marine life. Additionally, some coastal areas periodically experience upwelling -enriched water with reduced pH. Previous research has demonstrated acidification (OA)-induced changes in behavioural and sensory systems including olfaction, which altered function neural gamma-aminobutyric acid type A (GABA ) receptors. Here, we used camera-based tracking software system examine whether OA-dependent GABA receptors affect anxiety juvenile Californian rockfish ( Sebastes diploproa ). Anxiety was estimated using tests that measure light/dark preference (scototaxis) proximity an object. After one week OA conditions projected next century California shore (1125 ± 100 µatm, 7.75), significantly increased relative controls (483 40 µatm 8.1). -receptor agonist muscimol, but not antagonist gabazine, caused significant increase consistent Cl − flux OA-exposed fish. fish remained more anxious even after 7 days back control seawater; however, they resumed their normal behaviour by day 12. These results show could severely alter behaviour; this effect reversible.

Language: Английский

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Behavioural impairment in reef fishes caused by ocean acidification at CO2 seeps

Nature Climate Change, Journal Year: 2014, Volume and Issue: 4(6), P. 487 - 492

Published: April 11, 2014

Language: Английский

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Antarctic Marine Biodiversity: Adaptations, Environments and Responses to Change

CRC Press eBooks, Journal Year: 2018, Volume and Issue: unknown, P. 105 - 236

Published: Sept. 3, 2018

Animals living in the Southern Ocean have evolved a singular environment. It shares many of its attributes with high Arctic, namely low, stable temperatures, pervading effect ice forms and extreme seasonality light phytobiont productivity. Antarctica is, however, most isolated continent on Earth is only one that lacks continental shelf connection another continent. This isolation, along millions years these conditions existed, has produced fauna both diverse, around 17,000 marine invertebrate species there, highest proportions endemic any The reasons for this are discussed. history unusual environmental resulted producing range scale adaptations to low temperature unique. best known such include channichthyid icefish lack haemoglobin transport oxygen their bodies solution, or absence, some species, what was 20 ago termed universal heat shock response. Other large size groups, tendency produce larger eggs than at lower latitudes very long gametogenic cycles, egg development (vitellogenesis) taking 18–24 months species. rates which cellular physiological processes conducted appear adapted to, least partially compensated for, as microtubule assembly cells, whereas other locomotion metabolic rate not compensated, whole-animal growth, embryonic development, limb regeneration echinoderms proceed even slower would be predicted by normal rules governing biological processes. review describes current state knowledge biodiversity majority ecophysiological cold-blooded Antarctic conditions. further evaluates impacts capacities resist, respond change environment, where resistance raised temperatures seems poor, exposure acidified end-century levels comparatively little impact.

Language: Английский

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Effects of elevated CO2 on fish behaviour undiminished by transgenerational acclimation

Nature Climate Change, Journal Year: 2014, Volume and Issue: 4(12), P. 1086 - 1089

Published: Oct. 3, 2014

Language: Английский

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Antarctica: The final frontier for marine biological invasions

Global Change Biology, Journal Year: 2019, Volume and Issue: 25(7), P. 2221 - 2241

Published: April 23, 2019

Abstract Antarctica is experiencing significant ecological and environmental change, which may facilitate the establishment of non‐native marine species. Non‐native species will interact with other anthropogenic stressors affecting Antarctic ecosystems, such as climate change (warming, ocean acidification) pollution, irreversible ramifications for biodiversity ecosystem services. We review current knowledge in region, physical physiological factors that resist species, changes to resistance under role legislation limiting introductions, effect increasing human activity on vectors pathways introduction. Evidence limited: just four one cryptogenic were likely introduced anthropogenically have been reported freely living or sub‐Antarctic waters, but no established populations reported; an additional six observed are potentially at risk becoming invasive. present estimates intensity ship across fishing, tourism research sectors: there be approximately 180 vessels 500+ voyages waters annually. However, these necessarily speculative because relevant data scarce. To well‐informed policy management, we make recommendations future into likelihood biological invasions region.

Language: Английский

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