Impacts of ocean acidification on development of the meroplanktonic larval stage of the sea urchin Centrostephanus rodgersii
Impacts of ocean acidification on development of the meroplanktonic larval stage of the sea urchin Centrostephanus rodgersii
复制标题
DOI：
10.1093/icesjms/fsr123
复制
发表时间：
2012-05-01
影响因子：
3.3
通讯作者：
Byrne, Maria
中科院分区：
文献类型：
--
作者：
Doo, Steve S.;Dworjanyn, Symon A.;Byrne, Maria
研究人员在海胆 Centrostephanus rodgersii（一种来自澳大利亚东部的栖息地改变物种）中研究了近期海洋酸化/高碳酸血症对幼虫发育的影响。 pH 值降低（-0.3 至-0.5 pH 单位）或pCO(2) 增加会显着降低正常幼虫的百分比。在 pH 7.6/1800 ppm 处理中，幼虫生长受到较小幼虫的负面影响。酸化对发育的影响在第 3 天和第 5 天相似，表明在发育早期存在有害影响。第 3 天，在异常棱柱期幼虫和停滞/死亡胚胎中发现 pH 7.6/1600 ppm 处理的异常增加。到第 5 天，接受这种治疗的刺头鱼的臂杆变小了。对 C. rodgersii 较小幼虫的观察对该物种具有重要意义，因为幼虫的成功可能是在不断变化的海洋中持续存在的潜在瓶颈。
The effects of near-future ocean acidification/hypercapnia on larval development were investigated in the sea urchin Centrostephanus rodgersii, a habitat-modifying species from eastern Australia. Decreased pH (-0.3 to -0.5 pH units) or increased pCO(2) significantly reduced the percentage of normal larvae. Larval growth was negatively impacted with smaller larvae in the pH 7.6/1800 ppm treatments. The impact of acidification on development was similar on days 3 and 5, indicating deleterious effects early in development. On day 3, increased abnormalities in the pH 7.6/1600 ppm treatment were seen in aberrant prism stage larvae and arrested/dead embryos. By day 5, echinoplutei in this treatment had smaller arm rods. Observations of smaller larvae in C. rodgersii have significant implications for this species because larval success may be a potential bottleneck for persistence in a changing ocean.