Coastal acidification impacts on shell mineral structure of bivalve mollusks.
Coastal acidification impacts on shell mineral structure of bivalve mollusks.
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DOI：
10.1002/ece3.4416
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发表时间：
2018-09
影响因子：
2.6
通讯作者：
Byrne M
中科院分区：
文献类型：
--
作者：
Fitzer SC;Torres Gabarda S;Daly L;Hughes B;Dove M;O'Connor W;Potts J;Scanes P;Byrne M
全球海洋酸化的发生是由于海洋吸收的二氧化碳增加，引起对钙化物种的特别关注。除了海洋酸化外，海岸附近的海洋栖息地还受到酸性硫酸盐土壤径流的有害影响，这也降低了环境pH值。气候变化导致的海平面上升和流域洪水加剧了沿海酸化。为了应对海洋和沿海酸化导致的栖息地pH值降低，预计软体动物会产生结构完整性较低的较薄外壳，并降低机械性能，威胁软体动物水产养殖。在这里，我们提出了第一项研究，研究牡蛎生物矿化下的酸性硫酸盐土壤酸化的地区，商业双壳类物种的增长在最近几十年下降。悉尼岩牡蛎，Saccostrea glomerata，通过电子背散射衍射分析的壳的晶体学检查显示，环境酸化的信号是明显的生物矿物的结构。Saccostrea glomerata，表现出表型可塑性，这在生活在沿海酸化地点的种群中对生物矿化的晶体学控制的破坏中是显而易见的。我们的研究结果表明，减少这些牡蛎的商业销售的大小可能是由于有限的能力，牡蛎生物矿化酸化条件下。由于气候变化将继续加剧这一集水区源酸化的影响，并可能对地球仪许多地方的沿海水产养殖产生影响，因此需要制定管理战略，以维持这些关键资源的可持续养殖。
Ocean acidification is occurring globally through increasing CO 2 absorption into the oceans creating particular concern for calcifying species. In addition to ocean acidification, near shore marine habitats are exposed to the deleterious effects of runoff from acid sulfate soils which also decreases environmental pH. This coastal acidification is being exacerbated by climate change‐driven sea‐level rise and catchment‐driven flooding. In response to reduction in habitat pH by ocean and coastal acidification, mollusks are predicted to produce thinner shells of lower structural integrity and reduced mechanical properties threatening mollusk aquaculture. Here, we present the first study to examine oyster biomineralization under acid sulfate soil acidification in a region where growth of commercial bivalve species has declined in recent decades. Examination of the crystallography of the shells of the Sydney rock oyster, Saccostrea glomerata, by electron back scatter diffraction analyses revealed that the signal of environmental acidification is evident in the structure of the biomineral. Saccostrea glomerata, shows phenotypic plasticity, as evident in the disruption of crystallographic control over biomineralization in populations living in coastal acidification sites. Our results indicate that reduced sizes of these oysters for commercial sale may be due to the limited capacity of oysters to biomineralize under acidification conditions. As the impact of this catchment source acidification will continue to be exacerbated by climate change with likely effects on coastal aquaculture in many places across the globe, management strategies will be required to maintain the sustainable culture of these key resources.
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影响因子：
11.6
作者：
Ellis RP;Urbina MA;Wilson RW
通讯作者：
Wilson RW
影响因子：
2.5
作者：
Beniash, Elia;Ivanina, Anna;Sokolova, Inna M.
通讯作者：
Sokolova, Inna M.
影响因子：
2.7
作者：
Gobler CJ;Talmage SC
通讯作者：
Talmage SC
影响因子：
2.8
作者：
Barton, Alan;Waldbusser, George G.;McLaughlin, Karen
通讯作者：
McLaughlin, Karen
影响因子：
2.7
作者：
Duarte, Carlos M.;Hendriks, Iris E.;McCulloch, Malcolm
通讯作者：
McCulloch, Malcolm