Environmental significance of morphological variations in the foraminifer Ammonia aomoriensis (Asano, 1951) and its molecular identification: A study from the Yellow Sea and East China Sea, PR China
Environmental significance of morphological variations in the foraminifer Ammonia aomoriensis (Asano, 1951) and its molecular identification: A study from the Yellow Sea and East China Sea, PR China
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有孔虫 Ammonia aomoriensis 形态变异的环境意义（Asano，1951）及其分子鉴定：来自中国黄海和东海的研究
DOI：
10.1016/j.palaeo.2016.05.010
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发表时间：
2017-10
影响因子：
3
通讯作者：
Lyu Man
中科院分区：
文献类型：
--
作者：
Lei Yanli;Li Tiegang;Nigam Rajiv;Holzmann Maria;Lyu Man
从2010年至2014年从黄海和东海采集的78个样品中分离到Aomoriensis（Asano 1951）。该物种表现出二型性（微球和巨球形式）和不同的卷曲方向（右旋和左旋）。测定了4份A.非晶组织具有不同的形态（右旋与左旋，微球形与巨球形）。结果表明，A. aomorientation是从我们的研究站点分支内先前获得的序列相同的物种。为了检验形态差异是否受环境控制，我们调查了青岛和胶州湾的667个标本，其中290个为右卷曲（右旋），377个为左卷曲（左旋）。同样，525个是微球体，142个是巨球体。计算相关系数，以评估有孔虫形态（二型性和卷曲方向）和环境参数（温度和盐度）之间的关系。微球/巨球型比值与盐度呈显著正相关（r = 0.719，p <0.001）。形态变异与温度无相关性。我们的研究结果表明，A. aomoriensiscan被用来推断过去的盐度条件（从而淡水流入量）在中国研究区。
Ammonia aomoriensis(Asano 1951) was isolated from 78 samples collected from the Yellow Sea and East China Sea during 2010 to 2014. The species exhibits dimorphism (microspheric and megalospheric forms) and different coiling directions (dextral and sinistral). A fragment of SSU rDNA was sequenced for four specimens ofA. aomoriensisexhibiting different morphologies (dextral vs. sinistral, microspheric vs. megalospheric). Our results show thatA. aomoriensisfrom our study sites branch within previously obtained sequences of the same species. In order to test whether morphological differences are environmentally controlled we investigated 667 specimens from Qingdao and Jiaozhou Bay among which 290 were right coiled (dextral) and 377 were left coiled (sinistral). Similarly, 525 were microspheric and 142 were megalospheric. A correlation coefficient was computed to evaluate the relationship between foraminiferal morphology (dimorphism and coiling direction) and environmental parameters (temperature and salinity). A significant positive correlation was detected between the ratio of microspheric/megalospheric forms and salinity (r = 0.719,p< 0.001). No correlation was detected between morphological variations and temperature. Our findings suggest that the ratio of microspheric/megalospheric forms inA. aomoriensiscan be used to infer past salinity conditions (and thus fresh water influx) in study areas off China.
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影响因子：
5.8
作者：
Yan-Li Lei;Tiegang Li;Hongsheng Bi;W. Cui;W. Song;J. Li;C. Li
通讯作者：
Yan-Li Lei;Tiegang Li;Hongsheng Bi;W. Cui;W. Song;J. Li;C. Li
影响因子：
1.1
作者：
M. Holzmann;J. Pawłowski
通讯作者：
M. Holzmann;J. Pawłowski
影响因子：
2
作者：
Holzmann, M;Pawlowski, J
通讯作者：
Pawlowski, J
影响因子：
6.1
作者：
H. Hartley;Sir Ronald A. Fisher;F. Yates
通讯作者：
H. Hartley;Sir Ronald A. Fisher;F. Yates
影响因子：
1.9
作者：
Pawlowski, Jan;Holzmann, Maria;Tyszka, Jaroslaw
通讯作者：
Tyszka, Jaroslaw