Irreversible behavioural impairment of fish starts early: Embryonic exposure to ocean acidification

Rodriguez-Dominguez, Almendra; Connell, Sean D.; Baziret, Clement; Nagelkerken, Ivan

doi:10.1016/j.marpolbul.2018.06.004

Cited by 15 publications

(7 citation statements)

References 41 publications

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“…Many marine species are likely to be affected by projected OA conditions in 2050. Evidence supporting the effects of OA on commercially important marine bivalves is clear (Gazeau et al, 2013;Waldbusser and Salisbury, 2014), and more information continuously becomes available for other groups such as crustaceans and fish (e.g., Dixson et al, 2010;Keppel et al, 2012;Long et al, 2016a;Rodriguez-Dominguez et al, 2018). These data indicate that acute or chronic responses are observed between O a of 1.0 and 2.0.…”

Section: Sensitivity Of Gom Fauna To Oamentioning

confidence: 94%

Projecting ocean acidification impacts for the Gulf of Maine to 2050

Siedlecki

Salisbury

Gledhill³

et al. 2021

Elementa: Science of the Anthropocene

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Ocean acidification (OA) is increasing predictably in the global ocean as rising levels of atmospheric carbon dioxide lead to higher oceanic concentrations of inorganic carbon. The Gulf of Maine (GOM) is a seasonally varying region of confluence for many processes that further affect the carbonate system including freshwater influences and high productivity, particularly near the coast where local processes impart a strong influence. Two main regions within the GOM currently experience carbonate conditions that are suboptimal for many organisms—the nearshore and subsurface deep shelf. OA trends over the past 15 years have been masked in the GOM by recent warming and changes to the regional circulation that locally supply more Gulf Stream waters. The region is home to many commercially important shellfish that are vulnerable to OA conditions, as well as to the human populations whose dependence on shellfish species in the fishery has continued to increase over the past decade. Through a review of the sensitivity of the regional marine ecosystem inhabitants, we identified a critical threshold of 1.5 for the aragonite saturation state (Ωa). A combination of regional high-resolution simulations that include coastal processes were used to project OA conditions for the GOM into 2050. By 2050, the Ωa declines everywhere in the GOM with most pronounced impacts near the coast, in subsurface waters, and associated with freshening. Under the RCP 8.5 projected climate scenario, the entire GOM will experience conditions below the critical Ωa threshold of 1.5 for most of the year by 2050. Despite these declines, the projected warming in the GOM imparts a partial compensatory effect to Ωa by elevating saturation states considerably above what would result from acidification alone and preserving some important fisheries locations, including much of Georges Bank, above the critical threshold.

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Section: Sensitivity Of Gom Fauna To Oamentioning

confidence: 94%

Projecting ocean acidification impacts for the Gulf of Maine to 2050

Siedlecki

Salisbury

Gledhill³

et al. 2021

Elementa: Science of the Anthropocene

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“…Again, these data were not obtainable from five papers, due to either the nature of the data (i.e., no variance associated with the response variable measured, or directional response variables measured in degrees; the latter due to computational issues arising from such metrics) [40][41][42] or from the paper reporting an effect of ocean acidification but not adequately providing the means and/or variance in neither the paper or supplementary material [43,44]. Where means and variance were measurable but observed to be zero, we estimated both as 0.0001 in order to calculate effect size [8][9][10]17,[45][46][47][48][49]. The data were used to generate effect sizes and variance estimates for each observation.…”

Section: Qualitative Data Collectionmentioning

confidence: 99%

Meta-analysis reveals an extreme “decline effect” in the impacts of ocean acidification on fish behaviour

Clements¹,

Sundin²,

Jutfelt³

2020

Preprint

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Ocean acidification – deceasing oceanic pH resulting from the uptake of excess atmospheric CO2 – is expected to affect marine life in the future. Among the possible consequences, a series of studies on coral reef fishes suggested that the direct effects of acidification on fish behaviour will be the most catastrophic. Recent studies documenting a lack of effect of experimental ocean acidification on fish behaviour, however, call this dire prediction into question. Here, we critically assess the past decade of ocean acidification research regarding direct effects on fish behaviour. Using a meta-analysis, we provide quantitative evidence that the research to date on this topic is strongly characterized by a phenomenon known as the “decline effect”, where large effects have all but disappeared over a decade. The decline effect in this field cannot be explained biologically, but is strongly associated with well-known biases to which the process of science is generally prone. We contend that ocean acidification does not have as much of a direct impact on fish behaviour as previously thought, and we advocate for improved approaches to minimize the potential for a decline effect in future avenues of research.

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“…It is unclear if increased reproductive investment alone will ultimately lead to higher species population replenishment in a future ocean, because young life stages are particularly vulnerable to environmental change [36]. The greater vulnerabilities of earlier life stages of larvae to CO 2 enrichment have been shown in the laboratory and natural upwelling areas, particularly for fitness-related traits of growth and condition [37], survival [38], hiding behaviour [39], and the antioxidant defence system [21]. Indeed, an integrative model (incorporating laboratory results on egg fertilisation, egg and larval survival, and development time) forecasts recruitment failure for Atlantic cod under ocean acidification and warming, but also suggests that future reductions in recruitment success might be mitigated via increased food availability, adaptation, and increased egg production (through fisheries stock management), with egg production having the strongest buffering effect [40].…”

Section: Plos Biologymentioning

confidence: 99%

Ocean acidification boosts reproduction in fish via indirect effects

et al. 2021

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Ocean acidification affects species populations and biodiversity through direct negative effects on physiology and behaviour. The indirect effects of elevated CO2 are less well known and can sometimes be counterintuitive. Reproduction lies at the crux of species population replenishment, but we do not know how ocean acidification affects reproduction in the wild. Here, we use natural CO2 vents at a temperate rocky reef and show that even though ocean acidification acts as a direct stressor, it can indirectly increase energy budgets of fish to stimulate reproduction at no cost to physiological homeostasis. Female fish maintained energy levels by compensation: They reduced activity (foraging and aggression) to increase reproduction. In male fish, increased reproductive investment was linked to increased energy intake as mediated by intensified foraging on more abundant prey. Greater biomass of prey at the vents was linked to greater biomass of algae, as mediated by a fertilisation effect of elevated CO2 on primary production. Additionally, the abundance and aggression of paternal carers were elevated at the CO2 vents, which may further boost reproductive success. These positive indirect effects of elevated CO2 were only observed for the species of fish that was generalistic and competitively dominant, but not for 3 species of subordinate and more specialised fishes. Hence, species that capitalise on future resource enrichment can accelerate their reproduction and increase their populations, thereby altering species communities in a future ocean.

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Irreversible behavioural impairment of fish starts early: Embryonic exposure to ocean acidification

Cited by 15 publications

References 41 publications

Projecting ocean acidification impacts for the Gulf of Maine to 2050

Projecting ocean acidification impacts for the Gulf of Maine to 2050

Meta-analysis reveals an extreme “decline effect” in the impacts of ocean acidification on fish behaviour

Ocean acidification boosts reproduction in fish via indirect effects

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