气候变化领域集成服务门户(CCPortal): Sclerochronological basis for growth band counting: A reliable technique for life-span determination of Crassostrea virginica from the mid-Atlantic United States

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DOI	10.1016/j.palaeo.2018.11.029
	Sclerochronological basis for growth band counting: A reliable technique for life-span determination of Crassostrea virginica from the mid-Atlantic United States
	Zimmt J.B.; Lockwood R.; Andrus C.F.T.; Herbert G.S.
发表日期	2019
ISSN	0031-0182
起始页码	54
结束页码	63
卷号	516
英文摘要	Widely used sclerochronological methods for biologically aging fossilized oysters, such as δ18O and Mg/Ca analyses, are costly, time-consuming, and not always practical for population-level analyses. A method that relies on visible morphological features, such as growth bands, to determine the lifespan of Crassostrea virginica would provide a cost-efficient and reliable alternative. Previous studies have assessed whether counting growth bands can be used to biologically age C. virginica from the southeastern U.S. but have produced conflicting results. For this study, we conducted subseasonal sclerochronological analyses on Pleistocene C. virginica from the mid-Atlantic U.S. to determine whether growth band counting could be used to reliably measure oyster lifespan. A highly significant correlation exists between δ18O peaks and major (annual) grey growth bands in these oysters. Major grey and white growth bands differ significantly with respect to δ18O values. These data suggest that, for C. virginica from the Pleistocene of the mid-Atlantic U.S., major grey growth bands are accreted during the colder months of the year and can be used as annual markers to biologically age specimens. The results presented here differ from previous studies that reported no link between growth bands and δ18O values, possibly because the latter focused on lower latitude regions with different seasonal temperature regimes and sampled only the early stages of growth, which contain morphological features that could be confused with major growth bands. While growth band counting of oysters shows promise as a method for biologically aging oysters that experience high seasonal temperature variability, future studies are needed to assess its applicability over a broader geographic range. © 2018 Elsevier B.V.
英文关键词	Conservation paleobiology; Life history; Oysters; Sclerochronology; Stable oxygen isotopes
语种	英语
scopus关键词	biochronology; bivalve; conservation; growth; life history; morphology; oxygen isotope; paleobiology; Pleistocene; sclerite; stable isotope; temperature; Mid-Atlantic States; United States; Crassostrea virginica; Ostreidae
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151110
作者单位	Department of Geology, The College of William and Mary, P.O. Box 8795, Williamsburg, VA 23187, United States; Department of Integrative Biology, University of California, Berkeley, CA 94720, United States; Department of Geological Sciences, University of Alabama, Tuscaloosa, AL 35487, United States; School of Geosciences, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL 33620, United States
推荐引用方式 GB/T 7714	Zimmt J.B.,Lockwood R.,Andrus C.F.T.,et al. Sclerochronological basis for growth band counting: A reliable technique for life-span determination of Crassostrea virginica from the mid-Atlantic United States[J],2019,516.
APA	Zimmt J.B.,Lockwood R.,Andrus C.F.T.,&Herbert G.S..(2019).Sclerochronological basis for growth band counting: A reliable technique for life-span determination of Crassostrea virginica from the mid-Atlantic United States.Palaeogeography, Palaeoclimatology, Palaeoecology,516.
MLA	Zimmt J.B.,et al."Sclerochronological basis for growth band counting: A reliable technique for life-span determination of Crassostrea virginica from the mid-Atlantic United States".Palaeogeography, Palaeoclimatology, Palaeoecology 516(2019).