Marine animal behaviour in a high CO2 ocean

Marine Ecology Progress Series, Год журнала: 2015, Номер 536, С. 259 - 279

Опубликована: Июль 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.

Язык: Английский

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Ocean acidification as a multiple driver: how interactions between changing seawater carbonate parameters affect marine life

Marine and Freshwater Research, Год журнала: 2019, Номер 71(3), С. 263 - 263

Опубликована: Ноя. 29, 2019

‘Multiple drivers’ (also termed ‘multiple stressors’) is the term used to describe cumulative effects of multiple environmental factors on organisms or ecosystems. Here, we consider ocean acidification as a driver because many inorganic carbon parameters are changing simultaneously, including total dissolved carbon, CO2, HCO3–, CO32–, H+ and CaCO3 saturation state. With rapid expansion research has come greater understanding complexity intricacies how these simultaneous changes seawater carbonate system affecting marine life. We start by clarifying key terms chemists biologists system. Then, using groups non-calcifying (fish, seaweeds, diatoms) calcifying (coralline algae, coccolithophores, corals, molluscs) organisms, various physiological processes affected different components

Язык: Английский

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Sperm Motility, Oxidative Status, and Mitochondrial Activity: Exploring Correlation in Different Species

Antioxidants, Год журнала: 2021, Номер 10(7), С. 1131 - 1131

Опубликована: Июль 16, 2021

Sperm quality assessment is the first step for evaluating male fertility and includes estimation of sperm concentration, motility, morphology. Nevertheless, other parameters can be assessed providing additional information on reproductive potential. This study aimed to evaluate correlate oxidative status, mitochondrial functionality, motility in spermatozoa two marine invertebrate (Ciona robusta Mytilus galloprovincialis) one mammalian (Bos taurus) species. By combining fluorescent staining spectrofluorometer, status was evaluated through intracellular reactive oxygen species (ROS) plasma membrane lipid peroxidation (LPO) analysis. Mitochondrial functionality potential (MMP). In three examined species, a negative correlation emerged between vs ROS levels LPO. positively correlated with MMP bovine, whereas these were not related ascidian or even negatively mussel spermatozoa. LPO ascidians, only These results suggest that energy sources vary causes decline via damage lipids. Overall, this validates use probes combination spectrofluorometer as simple powerful methodology supplementary evaluation shedding light new markers provided relevant energetic metabolism.

Язык: Английский

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Ocean acidification hampers sperm-egg collisions, gamete fusion, and generation of Ca2+ oscillations of a broadcast spawning bivalve, Tegillarca granosa

Marine Environmental Research, Год журнала: 2017, Номер 130, С. 106 - 112

Опубликована: Июль 20, 2017

Язык: Английский

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Dynamic changes in the sperm quality ofMytilus galloprovincialisunder continuous thermal stress

Molecular Reproduction and Development, Год журнала: 2015, Номер 83(2), С. 162 - 173

Опубликована: Дек. 11, 2015

Global warming is an increasingly serious problem underlying ecological change in marine flora and fauna. Mytilus galloprovincialis intertidal species that colonizes coasts moderate warm climates, can thus withstand extreme climatic conditions; however, it successfully reproduces only within a certain temperature range. The effects of prolonged exposure to 28 °C, unsuitable for breeding activity, on sperm quality were evaluated this study. Such heat stress induced the following: significant reduction concentration; biphasic pattern motility mitochondrial membrane potential first increased, then collapsed; decrease intracellular calcium rapid increase lipid peroxidation was normalized after third week stress; DNA fragmentation atypical morphology (i.e., with globular head, asymmetrical tail, acrosome loss). Currently, these elevated-temperature conditions are achieved along Mediterranean coast during late summer, when reproductive activity M. suspended massive spawning spring. increasing global temperature, may shift their season, significantly impacting ecosystems mussel production.

Язык: Английский

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Marine gametes in a changing ocean: Impacts of climate change stressors on fecundity and the egg

Marine Environmental Research, Год журнала: 2017, Номер 128, С. 12 - 24

Опубликована: Фев. 17, 2017

Язык: Английский

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Sperm Motility Impairment in Free Spawning Invertebrates Under Near-Future Level of Ocean Acidification: Uncovering the Mechanism

Frontiers in Marine Science, Год журнала: 2020, Номер 6

Опубликована: Янв. 8, 2020

Ocean acidification (OA) refers to the decrease in ocean water pH resulting from increasing absorption of atmospheric CO2. This will cause changes ocean's carbonate chemistry system with a impact on reproduction marine organisms. Reproduction is fundamental process that allows conservation species; free-spawning invertebrates, this highly sensitive seawater quality and chemistry. To date, majority studies concerned OA effects has been focused embryo larval development. Despite several evidence for impairment reproductive success by environmental perturbations through altering gamete quality, sperm physiological responses are poorly investigated. In study, we evaluated exposure acidified (pH 7.8), which approximate predicted global averages oceanic surface waters at end century, mussel Mytilus galloprovincialis ascidian Ciona robusta evaluating endpoints, such as motility, vitality, mitochondrial activity, oxidative state, intracellular (pHi). Following seawater, percentage motile spermatozoa, activity pHi decreased comparison current 8.1, whereas vitality state were unaffected low external both species. broadcast spawners, relationship between initiation motility well known. Spermatozoa immotile testes induced after spermatozoa released into seawater; alkaline fact, increases activating respiration. The results study suggest lowering occur 2100, inhibition increase, prevent activation. Sperm key determinant fertilization success; consequently, corresponding drop would be expected important implications fitness survival invertebrates.

Язык: Английский

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Behavioral responses to ocean acidification in marine invertebrates: new insights and future directions

Journal of Oceanology and Limnology, Год журнала: 2019, Номер 38(3), С. 759 - 772

Опубликована: Ноя. 27, 2019

Язык: Английский

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Molecular mechanisms of sperm motility are conserved in an early-branching metazoan

Proceedings of the National Academy of Sciences, Год журнала: 2021, Номер 118(48)

Опубликована: Ноя. 22, 2021

Significance Reef-building corals are the keystone species of world’s most biodiverse yet threatened marine ecosystems. Coral reproduction, critical for reef resilience, requires that coral sperm swim through water column to reach egg. However, little is known about mechanisms regulate motility. We found here motility pH dependent and activation signaling via pH-sensing enzyme soluble adenylyl cyclase. This study reveals deep conservation a pathway from humans corals, presenting first comprehensive examination molecular regulating in an early-diverging animal. These results understanding resilience this sensitive life stage changing environment.

Язык: Английский

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Hypoxia Disrupts Sex‐Specific Physiology and Gene Expression Leading to Decreased Fitness in the Estuarine Sea Anemone Nematostella vectensis

Molecular Ecology, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

ABSTRACT Coastal seawater hypoxia is increasing in temperate estuaries under global climate change, yet it unknown how low oxygen conditions affect most estuarine species. We found that has increased since the 1990s an estuary hosting sea anemone Nematostella vectensis (Jacques Cousteau National Estuarine Research Reserve, New Jersey, USA). Adult N. bred from anemones collected this exposed to three consecutive nights of (dissolved = 0.5–1.5 mg L −1 for ~12 h night ) during gametogenesis displayed decreased aerobic respiration rates and biomass, indicating metabolic disruption. Physiological declines were correlated with changes expression genes related oxygen‐dependent processes, many which are targets hypoxia‐inducible factor 1α (HIF1α), demonstrating activity transcription first time early‐diverging metazoan. The upregulation involved unfolded protein response endoplasmic reticulum Golgi apparatus homeostasis suggested misfolded proteins contributed disrupted physiology. Notably, these responses more pronounced females, sex‐specific sensitivity was also observed reproductive outcomes, female but not male fecundity following exposure. However, sperm males had higher mitochondrial membrane potential, altered spermatogenesis. Further, crosses performed gametes hypoxia‐exposed adults yielded strikingly developmental success (~2%), larvae did develop similar accelerated settlement compared controls. Overall, depressed fitness by over 95%, suggesting even stress‐tolerant species may be threatened coastal deoxygenation.

Язык: Английский

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