Ocean acidification increases polyspermy of a broadcast spawning bivalve species by hampering membrane depolarization and cortical granule exocytosis

Han, Yu; Shi, Wei; Tang, Yu; Zhao, Xinguo; Du, Xueying; Sun, Suwan; Zhou, Weicheng; Liu, Guangxu

doi:10.1016/j.aquatox.2020.105740

Cited by 11 publications

(11 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…OA can affect multiple early developmental processes in corals and other marine invertebrates. Specifically, lower pH impacts sperm motility (Albright, 2011; Havenhand et al, 2008; Morita et al, 2010), fertilization success (Albright, 2011; Albright and Mason, 2013; Albright et al, 2010; Byrne, 2012; Han et al, 2021; Havenhand et al, 2008; Kurihara and Shirayama, 2004), larval settlement (Albright, 2011; Albright and Langdon, 2011; Albright et al, 2010), and post-settlement growth (Albright and Langdon, 2011; Albright et al, 2008; Albright et al, 2010; Scucchia et al, 2021a). In corals, decreased fertilization efficiency has been observed, which may be explained by decreased sperm flagellar motility and increased polyspermy under low pH (Albright and Mason, 2013; Albright et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Energetics but not development is impacted in coral embryos exposed to ocean acidification

Chille

Strand

Scucchia

et al. 2021

Preprint

View full text Add to dashboard Cite

In light of the chronic stress and mass mortality reef-building corals face under climate change, it is critical to understand the processes essential to reef persistence and replenishment, including coral reproduction and development. Here we quantify gene expression and size sensitivity to ocean acidification across a set of developmental stages in the rice coral, Montipora capitata. Gametes and then embryos and swimming larvae were exposed to three pH treatments ranging from 7.8 (Ambient), 7.6 (Low) and 7.3 (Xlow) from fertilization to 9 days post-fertilization. Embryo development and size, planula volume, and stage-specific gene expression were compared between treatments at each stage to determine the effects of acidified seawater on early development. While there was no measurable size differentiation between fertilized eggs and embryos at the prawn chip stage exposed to ambient, low, and extreme low pH, early gastrula and planula raised in reduced pH treatments were significantly smaller than those raised in ambient seawater, suggesting an energetic cost to developing under low pH. However, no differentially expressed genes emerged between treatments at any time point, except swimming larvae. Larvae from pH 7.6 showed upregulation of genes involved in cell division, regulation of transcription, lipid metabolism, and oxidative stress in comparison to the other two treatments, and smallest sizes in this treatment. While low pH appears to increase energetic demands and trigger oxidative stress, the developmental process is robust to this at a molecular level, with swimming larval stage reached in all pH treatments.

show abstract

Section: Introductionmentioning

confidence: 99%

Energetics but not development is impacted in coral embryos exposed to ocean acidification

Chille

Strand

Scucchia

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…(DIC) (µmol•kg −1 ), and the saturation state of aragonite and calcite, respectively Ωara and Ωcal, were all calculated from the measured salinity, measured pH, measured temperature, and measured total alkalinity TA, at an atmospheric pressure of 1atm = 1013.25 kilobar, using the open-source software "CO2cal 1.2.0". CO2cal 1.2.0 is the updated version of CO2SYS, previously used by many other articles [3,29,36]. The following picture displays the stabilization of the pH value in treatment 3, in the Predict_B group, where the desired pH value is 7.40.…”

Section: Experimental Design and Procedure Seawater Parametersmentioning

confidence: 99%

“…The full report of the Intergovernmental Panel on Climate Change (IPCC) published in 2019 [ 1 ] informed that from the pre-industrial period (1850–1900) until the present time, 2021, the Industrial Revolution involving the anthropogenic emission of CO 2 into the atmosphere has led to climate change, causing ocean warming and acidification [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Considering the land-based greenhouse gas (GHGs), the fifth assessment report on climate change (AR5) conveyed with medium confidence that the annual net CO 2 emissions from anthropogenic land-use change were 0.9 (0.1–1.7) gigaton of carbon per year (GtC∙yr –1 ), on average, from 2002 to 2011.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream (Acanthopagrus schlegelii), Physiological and Histological Studies

Tegomo

Zhong

Njomoue

et al. 2021

Animals

View full text Add to dashboard Cite

Acidification (OA), a global threat to the world’s oceans, is projected to significantly grow if CO2 continues to be emitted into the atmosphere at high levels. This will result in a slight decrease in pH. Since the latter is a logarithmic scale of acidity, the higher acidic seawater is expected to have a tremendous impact on marine living resources in the long-term. An 8-week laboratory experiment was designed to assess the impact of the projected pH in 2100 and beyond on fish survival, health, growth, and fish meat quality. Two projected scenarios were simulated with the control treatment, in triplicates. The control treatment had a pH of 8.10, corresponding to a pCO2 of 321.37 ± 11.48 µatm. The two projected scenarios, named Predict_A and Predict_B, had pH values of 7.80-pCO2 = 749.12 ± 27.03 and 7.40-pCO2 = 321.37 ± 11.48 µatm, respectively. The experiment was preceded by 2 weeks of acclimation. After the acclimation, 20 juvenile black sea breams (Acanthopagrus schlegelii) of 2.72 ± 0.01 g were used per tank. This species has been selected mainly due to its very high resistance to diseases and environmental changes, assuming that a weaker fish resistance will also be susceptibly affected. In all tanks, the fish were fed with the same commercial diet. The seawater’s physicochemical parameters were measured daily. Fish samples were subjected to physiological, histological, and biochemical analyses. Fish growth, feeding efficiency, protein efficiency ratio, and crude protein content were significantly decreased with a lower pH. Scanning electron microscopy revealed multiple atrophies of microvilli throughout the small intestine’s brush border in samples from Predict_A and Predict_B. This significantly reduced nutrient absorption, resulting in significantly lower feed efficiency, lower fish growth, and lower meat quality. As a result of an elevated pCO2 in seawater, the fish eat more than normal but grow less than normal. Liver observation showed blood congestion, hemorrhage, necrosis, vacuolation of hepatocytes, and an increased number of Kupffer cells, which characterize liver damage. Transmission electron microscopy revealed an elongated and angular shape of the mitochondrion in the liver cell, with an abundance of peroxisomes, symptomatic of metabolic acidosis.

show abstract

“…The average seawater surface pH has declined by approximately 0.1units compared with pre-industrial levels, and it is predicted to decline by an additional 0.3–0.4units by the end of this century ( Fabry et al, 2008 ; Gattuso et al, 2015 ). OA has been reported to exerted adverse effects on marine organisms, including fertilization ( Shi et al, 2017 ; Han et al, 2021 ), physiological responses ( Peng et al, 2017 ; Zhao et al, 2017a , b , 2020 ), immune responses ( Liu et al, 2016 ; Su et al, 2018 ), behavioral responses ( Peng et al, 2017 ; Rong et al, 2018 , 2020 ), and so on ( Liu, 2021 ). Kroeker et al (2011) findings indicated that OA decreased the diversity, biomass, and trophic complexity of benthic marine communities in reduced pH zones, with the highest reduction seen in the key calcifying species.…”

Section: Introductionmentioning

confidence: 99%

An Explanation Based on Energy-Related Changes for Blue Mussel Mytilus edulis Coping With Seawater Acidification

Guo

Zhou

Sun³

et al. 2021

Front. Physiol.

View full text Add to dashboard Cite

As ocean acidification (OA) is gradually increasing, concerns regarding its ecological impacts on marine organisms are growing. Our previous studies have shown that seawater acidification exerted adverse effects on physiological processes of the blue mussel Mytilus edulis, and the aim of the present study was to obtain energy-related evidence to verify and explain our previous findings. Thus, the same acidification system (pH: 7.7 or 7.1; acidification method: HCl addition or CO2 enrichment; experimental period: 21d) was set up, and the energy-related changes were assessed. The results showed that the energy charge (EC) and the gene expressions of cytochrome C oxidase (COX) reflecting the ATP synthesis rate increased significantly after acidification treatments. What’s more, the mussels exposed to acidification allocated more energy to gills and hemocytes. However, the total adenylate pool (TAP) and the final adenosine triphosphate (ATP) in M. edulis decreased significantly, especially in CO2 treatment group at pH 7.1. It was interesting to note that, TAP, ATP, and COXs gene expressions in CO2 treatment groups were all significantly lower than that in HCl treatment groups at the same pH, verifying that CO2-induced acidification exhibited more deleterious impacts on M. edulis, and ions besides H+ produced by CO2 dissolution were possible causes. In conclusion, energy-related changes in M. edulis responded actively to seawater acidification and varied with different acidification conditions, while the constraints they had at higher acidification levels suggest that M. edulis will have a limited tolerance to increasing OA in the future.

show abstract

Ocean acidification increases polyspermy of a broadcast spawning bivalve species by hampering membrane depolarization and cortical granule exocytosis

Cited by 11 publications

References 67 publications

Energetics but not development is impacted in coral embryos exposed to ocean acidification

Energetics but not development is impacted in coral embryos exposed to ocean acidification

Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream (Acanthopagrus schlegelii), Physiological and Histological Studies

An Explanation Based on Energy-Related Changes for Blue Mussel Mytilus edulis Coping With Seawater Acidification

Contact Info

Product

Resources

About