Effect of CO2 driven ocean acidification on calcification, physiology and ovarian cells of tropical sea urchin Salmacis virgulata – A microcosm approach

Anand, Manoj; Rangesh, Kannan; Maruthupandy, Muthuchamy; Jayanthi, Govindarajulu; Rajeswari, B.; Priya, Radhakrishnan Jeeva

doi:10.1016/j.heliyon.2021.e05970

Cited by 12 publications

(2 citation statements)

References 92 publications

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“…OA had negative effects on gonad growth, maturation, egg size, and gamete development in some echinoderm species (Siikavuopio et al, 2007;Kurihara, 2008;Stumpp et al, 2012;Kurihara et al, 2013;Suckling et al, 2014;Suckling et al, 2015;Verkaik et al, 2016;Dworjanyn and Byrne, 2018;Hu et al, 2018;Hue et al, 2020;Marcěta et al, 2020;Anand et al, 2021), while other studies reported no change in gamete development and quality (Wood et al, 2008;Uthicke et al, 2013;Hazan et al 2014; Uthicke et al, 2014;Dell'Acqua et al, 2019;Karelitz et al, 2019;Wong et al, 2019;Hue et al, 2020;Uthicke et al, 2020).…”

Section: Gametogenesis and Gamete Qualitymentioning

confidence: 91%

Ocean acidification does not overlook sex: Review of understudied effects and implications of low pH on marine invertebrate sexual reproduction

Padilla‐Gamiño

Alma²,

Spencer³

et al. 2022

Front. Mar. Sci.

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Sexual reproduction is a fundamental process essential for species persistence, evolution, and diversity. However, unprecedented oceanographic shifts due to climate change can impact physiological processes, with important implications for sexual reproduction. Identifying bottlenecks and vulnerable stages in reproductive cycles will enable better prediction of the organism, population, community, and global-level consequences of ocean change. This article reviews how ocean acidification impacts sexual reproductive processes in marine invertebrates and highlights current research gaps. We focus on five economically and ecologically important taxonomic groups: cnidarians, crustaceans, echinoderms, molluscs and ascidians. We discuss the spatial and temporal variability of experimental designs, identify trends of performance in acidified conditions in the context of early reproductive traits (gametogenesis, fertilization, and reproductive resource allocation), and provide a quantitative meta-analysis of the published literature to assess the effects of low pH on fertilization rates across taxa. A total of 129 published studies investigated the effects of ocean acidification on 122 species in selected taxa. The impact of ocean acidification is dependent on taxa, the specific reproductive process examined, and study location. Our meta-analysis reveals that fertilization rate decreases as pH decreases, but effects are taxa-specific. Echinoderm fertilization appears more sensitive than molluscs to pH changes, and while data are limited, fertilization in cnidarians may be the most sensitive. Studies with echinoderms and bivalve molluscs are prevalent, while crustaceans and cephalopods are among the least studied species even though they constitute some of the largest fisheries worldwide. This lack of information has important implications for commercial aquaculture, wild fisheries, and conservation and restoration of wild populations. We recommend that studies expose organisms to different ocean acidification levels during the entire gametogenic cycle, and not only during the final stages before gametes or larvae are released. We argue for increased focus on fundamental reproductive processes and associated molecular mechanisms that may be vulnerable to shifts in ocean chemistry. Our recommendations for future research will allow for a better understanding of how reproduction in invertebrates will be affected in the context of a rapidly changing environment.

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Section: Gametogenesis and Gamete Qualitymentioning

confidence: 91%

Ocean acidification does not overlook sex: Review of understudied effects and implications of low pH on marine invertebrate sexual reproduction

Padilla‐Gamiño

Alma²,

Spencer³

et al. 2022

Front. Mar. Sci.

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“…Climate warming is increasingly leading to marked changes in biodiversity, including plant, animal, and microorganism (Zhou et al, 2016). Meanwhile, with the climate warming, the change of carbon dioxide in marine water will dramatically change, which could lead to Ocean acidification (Anand et al 2021). It will affect the growth of microorganisms.…”

Section: Discussionmentioning

confidence: 99%

Diversity and distribution of yeasts in intertidal zones of China

Zhu,

Han,

Guo

et al. 2023

Front. Mar. Sci.

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China has the second greatest extent of intertidal zones in the world. The intertidal zone is the most dynamic environments in the biosphere and potentially supports high biodiversity. Marine yeasts show excellent performance in various industrial, environmental and medical applications, however, the marine yeast diversity has rarely been studied in China. In this study, we collected 1241 samples including marine sediments, marine water, plants, and benthos at 161 GPS sites in different types of intertidal zones along the Chinese coastline from north to south. A total of 4436 strains were isolated from these samples using different methods and 286 species including 39 potential novel species were identified from these strains based on the internal transcribed spacer (ITS) region or the D1/D2 domain of the large subunit rRNA gene sequence analysis. The majority of the yeast species in different geographical locations belong to the five orders Serinales, Saccharomycetales, Tremellales, Sporidiobolales, and Pichiales. The yeast species diversity varied depending on sample types, depth of marine sediments, intertidal zone types and geographical locations. Mean annual temperature (MAT), salinity and pH had the greatest effect on the community structures of the yeasts isolated from the intertidal zones. This study represents one of the most comprehensive surveys of marine yeasts in China to date and provides a better understanding of marine yeast diversity and distribution.

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Investigating intraspecific variability in the biological responses of sea urchins (Paracentrotus lividus) to seawater acidification

Asnicar,

Stranci,

Monti

et al. 2024

Environ Sci Pollut Res

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Alterations in seawater chemistry posed by acidification may lead to immunological and antioxidant defence impairment in sea urchins, with differences among local populations. Here, we analyzed the effects of reduced pH on Paracentrotus lividus, with a multibiomarker approach, and the possible intraspecific variations in sea urchin responses. Two groups of animals with different ecological histories (i.e., the pattern of environmental characteristics and pressures experienced throughout the organism’s lifetime) were maintained at ambient pH and pH reduced of 0.4 units for 8 months. Changes in gonadosomatic index (GSI), immunological, and oxidative stress biomarkers were assessed in coelomic fluid, gonads, and digestive tract. Animals maintained at reduced pH showed limited impact of seawater acidification compared to the ambient pH condition. However, sea urchins from the two sites were differently influenced by the seawater pH (as shown by multivariate analyses). GSI and immunological and antioxidant status were differentially modulated between the two sexes, with generally higher values in females, but differences between sexes in relation to the pH of exposure were limited. Overall, our findings highlight that the impact of environmental stressors may differ in sea urchins from different locations. This has implications for the maintenance of P. lividus wild populations under future global change scenarios.

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Effect of CO2 driven ocean acidification on calcification, physiology and ovarian cells of tropical sea urchin Salmacis virgulata – A microcosm approach

Cited by 12 publications

References 92 publications

Ocean acidification does not overlook sex: Review of understudied effects and implications of low pH on marine invertebrate sexual reproduction

Ocean acidification does not overlook sex: Review of understudied effects and implications of low pH on marine invertebrate sexual reproduction

Diversity and distribution of yeasts in intertidal zones of China

Investigating intraspecific variability in the biological responses of sea urchins (Paracentrotus lividus) to seawater acidification

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