Ocean acidification alters foraging behaviour in Dungeness crab through impairment of the olfactory pathway

Durant, Andrea; Khodikian, Elissa; Porteus, Cosima S.

doi:10.1111/gcb.16738

Cited by 10 publications

(4 citation statements)

References 111 publications

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“…Chronic stress reflected in monthly anomalies is ecologically impactful, but stressor events of shorter duration are known to impact organisms. For instance, Dungeness crab exposed to 10-day acidification treatments were shown to have impacted food sensing capability (Durant et al, 2023), and short episodes of hypoxia driven by synoptic weather events have been identified on the Oregon shelf (Siedlecki et al, 2015). Observationally, spatially heterogeneous levels of variability have been described in pH on timescales smaller than a month (Hofmann et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Site‐Specific Multiple Stressor Assessments Based on High Frequency Surface Observations and an Earth System Model

Olson,

John,

Dunne

et al. 2024

Earth and Space Science

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Global Earth system models are often enlisted to assess the impacts of climate variability and change on marine ecosystems. In this study, we compare high frequency (daily) outputs of potential ecosystem stressors, such as sea surface temperature and surface pH, and associated variables from an Earth system model (GFDL ESM4.1) with high frequency time series from a global network of moorings to directly assess the capacity of the model to resolve local biogeochemical variability on time scales from daily to interannual. Our analysis indicates variability in surface temperature is most consistent between ESM4.1 and observations, with a Pearson correlation coefficient of 0.93 and bias of 0.40°C, followed by variability in surface salinity. Physical variability is reproduced with greater accuracy than biogeochemical variability, and variability on seasonal and longer time scales is more consistent between the model and observations than higher frequency variability. At the same time, the well‐resolved seasonal and longer timescale variability is a reasonably good predictor, in many cases, of the likelihood of extreme events. Despite limited model representation of high frequency variability, model and observation‐based assessments of the fraction of days experiencing surface T‐pH and T‐Ωarag multistressor conditions show reasonable agreement, depending on the stressor combination and threshold definition. We also identify circumstances in which some errors could be reduced by accounting for model biases.

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Section: Introductionmentioning

confidence: 99%

Site‐Specific Multiple Stressor Assessments Based on High Frequency Surface Observations and an Earth System Model

Olson,

John,

Dunne

et al. 2024

Earth and Space Science

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“…These chemical changes can fundamentally affect marine organisms and the ecosystems they inhabit (Doney et al, 2009). OA affects a wide variety of physiological processes, life history traits and behaviours of marine invertebrates (Durant et al, 2023;Kroeker et al, 2010;Nagelkerken & Connell, 2015;Pörtner et al, 2004;Thomas et al, 2020). Invertebrates are vital components of marine ecosystems, comprising over 92% of species in the ocean, are essential to the function of ecosystem processes, and support the livelihoods of human societies across the globe (Bertness et al, 2001;.…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic responses in the nervous system and correlated behavioural changes of a cephalopod exposed to ocean acidification

Thomas,

Huerlimann,

Schunter

et al. 2023

Preprint

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The nervous system is central to coordinating behavioural responses to environmental change, likely including ocean acidification (OA). However, a clear understanding of neurobiological responses to OA is lacking, especially for marine invertebrates. We evaluated the transcriptomic response of the central nervous system (CNS) and eyes of the two-toned pygmy squid (Idiosepius pygmaeus) to OA conditions, using a de novo transcriptome assembly created with long read PacBio ISO-sequencing data. We then correlated patterns of gene expression with CO treatment levels and OA-affected behaviours in the same individuals. OA induced transcriptomic responses within the nervous system related to various different types of neurotransmission, neuroplasticity, immune function and oxidative stress. These molecular changes may contribute to OA-induced behavioural changes, as suggested by correlations between gene expression profiles, CO treatment and OA-affected behaviours. This study provides the first molecular insights into the neurobiological effects of OA on a cephalopod and correlates molecular changes with whole animal behavioural responses, helping to bridge the gap in our knowledge between environmental change and animal responses.

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“…For example, decreased feeding rates have been reported in the heterotrophic coral Stylophora pistillata under low-pH conditions (Houlbrèque et al 2015). A decrease in seawater pH has been shown to have negative effects on the predation behavior of marine fishes and invertebrates by impairing their olfactory systems (Porteus et al 2018;Schunter et al 2018;Durant et al 2023). Moreover, a decrease in pH increases the vulnerability of native oysters (Ostrea lurida) to predation by invasive snails (Urosalpinx cinerea) in California estuaries (Sanford et al 2014).…”

mentioning

confidence: 99%

“…Predation plays a crucial role in mediating community structure and function. Low pH has been found to modify predation behavior in a broad range of marine taxa (Houlbrèque et al 2015;Durant et al 2023). For example, decreased feeding rates have been reported in the heterotrophic coral Stylophora pistillata under low-pH conditions (Houlbrèque et al 2015).…”

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confidence: 99%

CO₂‐induced seawater acidification impairs the stinging cells of a jellyfish

Sun,

Li,

Peng

et al. 2024

Limnology & Oceanography

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CO2‐induced seawater acidification has been shown to modify predator–prey interactions in many marine taxa. Scyphozoans play an important role in the trophic dynamics of marine ecosystems during their blooms in coastal waters; however, the impacts of seawater acidification on the predation behavior of these animals are poorly understood. Here, we aimed to examine the impact of a decrease in seawater pH on the feeding behavior and growth of ephyrae (juvenile medusae) of the scyphozoan Aurelia coerulea. Combining bulk and single‐cell RNA sequencing approaches, we assessed transcriptomic changes of ephyrae under a laboratory‐based pH 7.6 condition. We found that the feeding rates and growth of ephyrae were significantly inhibited by a decrease in seawater pH. Furthermore, transcriptome analysis showed that a decline in pH significantly reduced the expression of genes related to toxins and nematocyst structure in ephyrae. These findings were further confirmed by single‐cell transcriptomic analyses and revealed that low pH impaired the toxin activity and energy metabolism of stinging cells. The pH recovery experiment indicated that moving ephyrae from seawater with pH 7.6 into seawater with pH 8.1 greatly restored their feeding, growth, and toxin‐related and nematocyst structure–related gene expression. However, exposure to pH 7.6 for 23 d could not recover the decrease in the feeding and growth of ephyrae. Together, these findings indicate that CO2‐induced acidification compromised the stinging cells of A. coerulea ephyrae, with concomitant negative consequences on predation and growth that are likely to alter predator–prey interactions, with consequent effects on community structure and ecosystem.

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Ocean acidification alters foraging behaviour in Dungeness crab through impairment of the olfactory pathway

Abstract: The accelerated increase in atmospheric carbon dioxide (CO 2 ) is predicted to have biologically significant impacts on marine organisms

Cited by 10 publications

References 111 publications

Site‐Specific Multiple Stressor Assessments Based on High Frequency Surface Observations and an Earth System Model

Site‐Specific Multiple Stressor Assessments Based on High Frequency Surface Observations and an Earth System Model

Transcriptomic responses in the nervous system and correlated behavioural changes of a cephalopod exposed to ocean acidification

CO₂‐induced seawater acidification impairs the stinging cells of a jellyfish

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Ocean acidification alters foraging behaviour in Dungeness crab through impairment of the olfactory pathway

Abstract: The accelerated increase in atmospheric carbon dioxide (CO 2 ) is predicted to have biologically significant impacts on marine organisms

Cited by 10 publications

References 111 publications

Site‐Specific Multiple Stressor Assessments Based on High Frequency Surface Observations and an Earth System Model

Site‐Specific Multiple Stressor Assessments Based on High Frequency Surface Observations and an Earth System Model

Transcriptomic responses in the nervous system and correlated behavioural changes of a cephalopod exposed to ocean acidification

CO2‐induced seawater acidification impairs the stinging cells of a jellyfish

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CO₂‐induced seawater acidification impairs the stinging cells of a jellyfish