Temperature and salinity effects on strontium incorporation in otoliths of larval spot (Leiostomus xanthurus)
Martin, Gretchen Bath
Thorrold, Simon R.
Jones, Cynthia M.
MetadataShow full item record
Temperature dependence of strontium/calcium (Sr/Ca) ratios in foraminiferal calcite and coral aragonite is well established; however, factors controlling Sr/Ca ratios in fish otoliths remain obscure. To assess temperature dependence of Sr/Ca in marine fish otoliths, we reared spot (Leiostomus xanthurus) larvae under controlled temperature (17–26 °C) and salinity (15‰ and 25‰). We found a significant linear relationship between temperature and Sr/Ca ratios, with a sensitivity of approximately 5%·°C–1. Otolith Sr/Ca values were also significantly higher at a salinity of 25‰ vs. 15‰, after accounting for differences in dissolved Sr/Ca ratios in the ambient water, with a sensitivity of approximately 1%/salinity (‰). These observations complicate the use of Sr/Ca ratios to determine temperature histories of spot larvae, because accurate temperature reconstructions are possible only with a priori knowledge of both ambient salinity and dissolved Sr/Ca ratios. Fully marine species residing in oceanic waters will not experience significant salinity variations; therefore, otolith Sr/Ca ratios may be useful recorders of temperature exposure. Otolith Sr/Ca thermometry in coastal fish species that make regular excursions into estuarine waters will be more problematic. Multiple geochemical tracers, including oxygen stable isotopes and other trace elements, may be necessary to accurately reconstruct temperature and salinity histories in these species.
Author Posting. © National Research Council Canada, 2004. This article is posted here by permission of National Research Council Canada for personal use, not for redistribution. The definitive version was published in Canadian Journal of Fisheries and Aquatic Sciences 61 (2004): 34-42, doi:10.1139/F03-143.
Suggested CitationArticle: Martin, Gretchen Bath, Thorrold, Simon R., Jones, Cynthia M., "Temperature and salinity effects on strontium incorporation in otoliths of larval spot (Leiostomus xanthurus)", Canadian Journal of Fisheries and Aquatic Sciences 61 (2004): 34-42, DOI:10.1139/F03-143, https://hdl.handle.net/1912/234
Showing items related by title, author, creator and subject.
Environmental data collected from biomimetic and other data loggers located in rocky intertidal zones of global oceans between July 1999 and October 2013 Helmuth, Brian (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: firstname.lastname@example.org, 2017-06-29)At a proximal level, the physiological impacts of global climate change on ectothermic organisms are manifest as changes in body temperatures. Especially for plants and animals exposed to direct solar radiation, body ...
Dean, Jerome P. (Woods Hole Oceanographic Institution, 1979-12)Vector averaging current meters have been modified to measure the temperature gradient in addition to current and absolute temperature. The modified instrument measures the temperature difference between sensors spaced ...
Chen, Ke; Kwon, Young-Oh (John Wiley & Sons, 2018-06-28)The relationship between North Pacific variability and sea surface temperature (SST) of the Northwest Atlantic continental shelf is examined over interannual time scale in 1982–2014. Statistically significant negative ...