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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
Lei, Yanli1,6; Li, Tiegang2,5,6; Nigam, Rajiv4; Holzmann, Maria3; Lyu, Man1,6
2017-10-01
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
Volume483Pages:49-57
SubtypeArticle
AbstractAmmonia 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 of A. aomoriensis exhibiting different morphologies (dextral vs. sinistral, microspheric vs. megalospheric). Our results show that A. aomoriensis from 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 in A. aomoriensis can be used to infer past salinity conditions (and thus fresh water influx) in study areas off China. (C) 2016 The Authors. Published by Elsevier B.V.
KeywordPaleoclimate Paleoenvironment Reconstruction Salinity Temperature The Yellow Sea
DOI10.1016/j.palaeo.2016.05.010
Indexed BySCI
Language英语
WOS IDWOS:000411547300005
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/135988
Collection海洋生物分类与系统演化实验室
海洋生物标本馆
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.SOA, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China
3.Univ Geneva, Dept Genet & Evolut, Geneva, Switzerland
4.Natl Inst Oceanog, Panaji 403004, Goa, India
5.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Lei, Yanli,Li, Tiegang,Nigam, Rajiv,et al. 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[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2017,483:49-57.
APA Lei, Yanli,Li, Tiegang,Nigam, Rajiv,Holzmann, Maria,&Lyu, Man.(2017).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.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,483,49-57.
MLA Lei, Yanli,et al."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".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 483(2017):49-57.
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