The impact of ocean acidification on the gonads of three key Antarctic benthic macroinvertebrates

Dell'Acqua, Ombretta; Ferrando, Sara; Chiantore, Mariachiara; Asnaghi, Valentina

doi:10.1016/j.aquatox.2019.02.012

Cited by 26 publications

(17 citation statements)

References 86 publications

(83 reference statements)

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“…Cummings et al (2011) showed that, in L. elliptica, the expression of chitin synthase increases as pH decreases. If A. colbecki activates resilience mechanisms as well and their additional energy demand would affect other functions is not known, but this would be in agreement with Dell'Acqua et al (2019) who reported an effect of OA in the reproductive tissue of the scallop at pH 7.6.…”

Section: Vickers Indentationsupporting

confidence: 80%

“…Benedetti et al (2016) found a significant effect of the interaction among OA, temperature and cadmium exposure in digestive gland and gills of the Antarctic scallop Adamussium colbecki. Recent investigations show that the low pH exposure affects the reproductive system of adult S. neumayeri and A. colbecki, conversely to O. validus, that is able to cope with OA with no negative effects on the gonads (Dell'Acqua et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Robustness of Adamussium colbecki shell to ocean acidification in a short-term exposure

Dell'Acqua

Trębala

Chiantore

et al. 2019

Marine Environmental Research

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Atmospheric pCO2 has increased since the industrial revolution leading to a lowering of the ocean surface water pH, a phenomenon called ocean acidification (OA). OA is claimed to be a major threat for marine organisms and ecosystems and, particularly, for Polar regions. We 2 explored the impact of OA on the shell mechanical properties of the Antarctic scallop Adamussium colbecki exposed for one month to acidified (pH 7.6) and natural conditions (unmanipulated littoral water), by performing Scanning Electron Microscopy, nanoindentation and Vickers indentation on the scallop shell. No effect of pH could be detected either in crystal deposition or in the mechanical properties. A. colbecki shell was found to be resistant to OA, which suggests this species to be able to face a climate change scenario that may threat the persistence of the endemic Antarctic species. Further investigation should be carried out in order to elucidate the destiny of this key species in light of global change.

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Section: Vickers Indentationsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Robustness of Adamussium colbecki shell to ocean acidification in a short-term exposure

Dell'Acqua

Trębala

Chiantore

et al. 2019

Marine Environmental Research

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“…Across a range of species, adult life stages show effects of exposure to end-century pH levels [e.g. on survival, shell dissolution, reproductive development; Manno et al, 2017;Dell'Acqua et al, 2019)]. Other species/stages are not adversely affected, including adult Antarctic krill (Ericson et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Antarctic ecosystems in transition – life between stresses and opportunities

et al. 2020

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“…Energy stored as gametes can also be reabsorbed and act as a trade-off with fecundity (Stumpp et al, 2012;Verkaik et al, 2017;Rossin et al, 2019). However, considerable physiological resilience to ocean acidification has been demonstrated at various life-cycle stages in bivalves (Dell'Acqua et al, 2019), echinoderms (Verkaik et al, 2017), and corals (Gizzi et al, 2017), and during short incubations, appears to show no significant effects on growth and reproduction in benthic invertebrates (Dell'Acqua et al, 2019), even in food limited scenarios (Goethel et al, 2017). Laboratory experiments have shown that higher food quality and availability has a role in buffering the physiological effects of climate change and ocean acidification (Asnaghi et al, 2013), with positive effects reported in Calanus copepods (Pedersen et al, 2014), bivalves (Thomsen et al, 2013), and barnacles (Pansch et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Invariant Gametogenic Response of Dominant Infaunal Bivalves From the Arctic Under Ambient and Near-Future Climate Change Conditions

et al. 2021

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Arctic marine ecosystems are undergoing a series of major rapid adjustments to the regional amplification of climate change, but there is a paucity of knowledge about how changing environmental conditions might affect reproductive cycles of seafloor organisms. Shifts in species reproductive ecology may influence their entire life-cycle, and, ultimately, determine the persistence and distribution of taxa. Here, we investigate whether the combined effects of warming and ocean acidification based on near-future climate change projections affects the reproductive processes in benthic bivalves (Astarte crenata and Bathyarca glacialis) from the Barents Sea. Both species present large oocytes indicative of lecithotrophic or direct larval development after ∼4 months exposure to ambient [<2°C, ∼400 ppm (CO2)] and near-future [3–5°C, ∼550 ppm (CO2)] conditions, but we find no evidence that the combined effects of acidification and warming affect the size frequency distribution of oocytes. Whilst our observations are indicative of resilience of this reproductive stage to global changes, we also highlight that the successful progression of gametogenesis under standard laboratory conditions does not necessarily mean that successful development and recruitment will occur in the natural environment. This is because the metabolic costs of changing environmental conditions are likely to be offset by, as is common practice in laboratory experiments, feeding ad libitum. We discuss our findings in the context of changing food availability in the Arctic and conclude that, if we are to establish the vulnerability of species and ecosystems, there is a need for holistic approaches that incorporate multiple system responses to change.

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The impact of ocean acidification on the gonads of three key Antarctic benthic macroinvertebrates

Cited by 26 publications

References 86 publications

Robustness of Adamussium colbecki shell to ocean acidification in a short-term exposure

Robustness of Adamussium colbecki shell to ocean acidification in a short-term exposure

Antarctic ecosystems in transition – life between stresses and opportunities

Invariant Gametogenic Response of Dominant Infaunal Bivalves From the Arctic Under Ambient and Near-Future Climate Change Conditions

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