Species and gamete-specific fertilization success of two sea urchins under near future levels of pCO2

Sung, Chan-Gyung; Kim, Tae Won; Park, Young-Gyu; Kang, Seong-Gil; Inaba, Kazuo; Shiba, Kogiku; Choi, Tae Seob; Moon, Seong-Dae; Litvin, Steven Y.; Lee, Kyu‐Tae; Lee, Jung-Suk

doi:10.1016/j.jmarsys.2014.04.013

Cited by 23 publications

(9 citation statements)

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“…More evidence of the negative effects of decreasing pH on fertilization success of invertebrates has been found (Sewell et al, 2013;Bögner et al, 2014;Frieder, 2014;Scanes et al, 2014;Sung et al, 2014) and RCP8.5 acidification has been shown to have negative effects on clam larval dispersal (Clements and Hunt, 2014).…”

Section: Updates To Ar5mentioning

confidence: 99%

An updated synthesis of the observed and projected impacts of climate change on the chemical, physical and biological processes in the oceans

et al. 2015

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The 5th Assessment Report (AR5) of the Intergovernmental Panel on Climate Change (IPCC) states with very high certainty that anthropogenic emissions have caused measurable changes in the physical ocean environment. These changes are summarized with special focus on those that are predicted to have the strongest, most direct effects on ocean biological processes; namely, ocean warming and associated phenomena (including stratification and sea level rise) as well as deoxygenation and ocean acidification. The biological effects of these changes are then discussed for microbes (including phytoplankton), plants, animals, warm and cold-water corals, and ecosystems. The IPCC AR5 highlighted several areas related to both the physical and biological processes that required further research. As a rapidly developing field, there have been many pertinent studies published since the cut off dates for the AR5, which have increased our understanding of the processes at work. This study undertook an extensive review of recently published literature to update the findings of the AR5 and provide a synthesized review on the main issues facing future oceans. The level of detail provided in the AR5 and subsequent work provided a basis for constructing projections of the state of ocean ecosystems in 2100 under two the Representative Concentration Pathways RCP4.5 and 8.5. Finally the review highlights notable additions, clarifications and points of departure from AR5 provided by subsequent studies.

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Section: Updates To Ar5mentioning

confidence: 99%

An updated synthesis of the observed and projected impacts of climate change on the chemical, physical and biological processes in the oceans

et al. 2015

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“…Based on these studies and the importance of the flagellum for sperm movement, down-regulation of tektin, CCDC135 and CCDC65 in the S. glomerata of our study could mean a potential impairment of sperm motility in the affected oysters. While some research has examined sperm motility, contradictory results have been obtained in these studies, with C. gigas sperm exposed to elevated CO 2 for 48 h showing a decrease in motility and Strongylocentrotus nudus sperm (20 min exposure) not affected by elevated CO 2 [117,118]. Although knowledge regarding the effect of increased pCO 2 on gametes is important, exposure of the adult before it reaches gravid stage could already potentially impact on the gametes before they are released into the water column.…”

Section: Ciliary Functionmentioning

confidence: 99%

Molecular analysis of the Sydney rock oyster (Saccostrea glomerata) CO2 stress response

Ertl

O’Connor

Wiegand

et al. 2016

Clim Chang Responses

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Background: Human activities have led to a substantial increase in carbon dioxide (CO 2 ) emission, with further increases predicted. A RNA-Seq study on adult Saccostrea glomerata was carried out to examine the molecular response of this bivalve species to elevated pCO 2 . Results: A total of 1626 S. glomerata transcripts were found to be differentially expressed in oysters exposed to elevated pCO 2 when compared to control oysters. These transcripts cover a range of functions, from immunity (e.g. pattern recognition receptors, antimicrobial peptides), to respiration (e.g. antioxidants, mitochondrial respiratory chain proteins) and biomineralisation (e.g. carbonic anhydrase). Overall, elevated levels of CO 2 appear to have resulted in a priming of the immune system and in producing countermeasures to potential oxidative stress. CO 2 exposure also seems to have resulted in an increase in the expression of proteins involved in protein synthesis, whereas transcripts putatively coding for proteins with a role in cilia and flagella function were down-regulated in response to the stressor. In addition, while some of the transcripts related to biomineralisation were up-regulated (e.g. carbonic anhydrase 2, alkaline phosphatase), a small group was down-regulated (e.g. perlucin). Conclusions: This study highlighted the complex molecular response of the bivalve S. glomerata to expected near-future ocean acidification levels. While there are indications that the oyster attempted to adapt to the stressor, gauged by immune system priming and the increase in protein synthesis, some processes such cilia function appear to have been negatively affected by the elevated levels of CO 2 .

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“…Similar to major calcifying groups, calcareous mollusks increased their shell dissolution rates and reduced their calcification rates when subjected to higher CO 2 . Developmental stages of sea urchins were also affected by increasing CO 2 concentrations, which changed fertilization rates, mortality, developmental rates, larvae size, and growth Shirayama and Thornton, 2005;Miles et al, 2007;Sung et al, 2014).…”

Section: Marine Invertebratesmentioning

confidence: 99%

Development of environmental impact monitoring protocol for offshore carbon capture and storage (CCS): A biological perspective

Kim

Kang³

et al. 2016

Environmental Impact Assessment Review

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Species and gamete-specific fertilization success of two sea urchins under near future levels of pCO2

Cited by 23 publications

References 50 publications

An updated synthesis of the observed and projected impacts of climate change on the chemical, physical and biological processes in the oceans

An updated synthesis of the observed and projected impacts of climate change on the chemical, physical and biological processes in the oceans

Molecular analysis of the Sydney rock oyster (Saccostrea glomerata) CO2 stress response

Development of environmental impact monitoring protocol for offshore carbon capture and storage (CCS): A biological perspective

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