Water, not food, contributes the majority of strontium and barium deposited in the otoliths of a marine fish
MetadataShow full item record
We quantified the relative contributions of water and food to strontium (Sr) and barium (Ba) deposited in otoliths of juvenile mummichogs Fundulus heteroclitus. Fish were reared in seawater spiked with 86Sr and 137Ba significantly beyond natural values to obtain distinct isotopic signatures for water and food. Element abundances (Sr:Ca and Ba:Ca) and isotope ratios (88Sr:86Sr and 138Ba:137Ba) were quantified in water samples using solution-based inductively coupled plasma-mass spectrometry (ICP-MS), and 88Sr:86Sr and 138Ba:137Ba ratios in otoliths were quantified using laser ablation ICP-MS. The relative contributions of water and food sources to otolith aragonite were assessed using a simple linear isotope mixing model. Water sources contributed 83% of Sr and 98% of Ba in otoliths formed in spiked seawater. Our results indicate that water chemistry is the dominant factor controlling the uptake of Sr and Ba in the otoliths of marine fishes. Thus, chemical signatures recorded in the otoliths of marine fishes should reflect the ambient water composition of these elements at the time of deposition.
Author Posting. © Inter-Research, 2006. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 311 (2006): 125-130, doi:10.3354/meps311125.
Suggested CitationArticle: Walther, Benjamin D., Thorrold, Simon R., "Water, not food, contributes the majority of strontium and barium deposited in the otoliths of a marine fish", Marine Ecology Progress Series 311 (2006): 125-130, DOI:10.3354/meps311125, https://hdl.handle.net/1912/4507
Showing items related by title, author, creator and subject.
Thorrold, Simon R.; Jones, Geoffrey P.; Planes, Serge; Hare, Jonathan A. (NRC Research Press, 2006-04-13)We describe a new technique for transgenerational marking of embryonic otoliths that promises significant advancements in the study of larval dispersal and population connectivity in marine fishes. The approach is based ...
Inter-annual variability in isotope and elemental ratios recorded in otoliths of an anadromous fish Walther, Benjamin D.; Thorrold, Simon R. (2008-10)Isotope ratios and elemental concentrations in otoliths are often used as natural tags to reconstruct migratory movements and connectivity patterns in marine and anadromous fishes. Although differences in otolith ...
Revising estimates of aquatic gross oxygen production by the triple oxygen isotope method to incorporate the local isotopic composition of water Manning, Cara C.; Howard, Evan M.; Nicholson, David P.; Ji, Brenda Y.; Sandwith, Zoe O.; Stanley, Rachel H. R. (John Wiley & Sons, 2017-10-25)Measurement of the triple oxygen isotope (TOI) composition of O2 is an established method for quantifying gross oxygen production (GOP) in natural waters. A standard assumption to this method is that the isotopic composition ...