Woods Hole Oceanographic Institution Simon R. Thorrold Front Page  |  Curriculum Vitae  |  Publications  |  Photo Gallery Publications » Retention of a transgenerational marker (137Barium) in tissues of adult female anemonefish and assessment of physiological stress » Linking habitat mosaics and juvenile fish migration in a coral reef seascape » Patterns and persistence of larval retention and connectivity in a marine fish metapopulation » Use of a natural isotopic signature in otoliths to evaluate scale-based age determination for American shad » Larval export from marine reserves benefits fish and fisheries » Estimating trout movements in a river network using strontium isoscapes » Testing an otolith geochemistry approach to determine population structure and movements of European hake in the northeast Atlantic Ocean and Mediterranean Sea » Otolith geochemistry discriminates estuarine nursery areas of Solea solea and Solea senegalensis through time » Persistence of self-recruitment and patterns of larval connectivity in a marine protected area network » Centennial records of lead contamination in northern Atlantic bivalves (Arctica islandica) » Probability of successful larval dispersal declines fivefold over 1 km in a coral reef fish » Terrestrial chemical cues help coral reef fish larvae locate settlement habitat surrounding islands » Connectivity dominates larval replenishment in a coastal reef fish metapopulation » Stable isotope signatures in otolith amino acids of juvenile snapper (Family: Lutjanidae) record habitat-specific isoscapes from coastal nurseries » Resolving natal tags using otolith geochemistry in rainbow smelt, Osmerus mordax, from coastal Newfoundland » Reconstructing fish diet and movement patterns using stable carbon isotope analysis of otolith amino acids » Effect of ocean acidification on otolith development in larvae of a tropical marine fish » Detrimental effects of host anemone bleaching on anemonefish populations » Ocean acidification does not affect the early life history development of a tropical marine fish » Spatial and ontogenetic variability in the chemical composition of juvenile common sole (Solea solea) otoliths » A review of elasmobranch research in the Red Sea » Population differences in otolith chemistry have a genetic basis in Menidia menidia » High connectivity among locally adapted populations of a marine fish » Otolith geochemistry does not reflect dispersal history of clownfish larvae » Limited diversity in natal origins of an anadromous fish during ocean residency » Carbon isotope fractionation of amino acids in fish muscle reflects diet and potential migration pathways » Experimental evaluation of stable isotope fractionation in fish muscle and otoliths » Permanent genetic resources added to Molecular Ecology Resources database 1 May 2009–31 July 2009 » The use of otoliths and larval abundance for studying the spatial ecology of the blenny Scartichthys viridis (Valenciennes, 1836) in coastal central Chile » An experimental evaluation of transgenerational isotope labelling in a coral reef grouper » Otolith chemistry » Inter-annual variability in isotope and elemental ratios recorded in otoliths of an anadromous fish » Chemical signatures in the otoliths of a coastal marine fish, Menidia menidia, from the northeastern United States:  spatial and temporal differences » Transequatorial migrations by basking sharks in the western Atlantic Ocean » Connectivity and resilience of coral reef metapopulations in MPAs:  matching empirical efforts to predictive needs » Spatial and temporal variation in elemental signatures of statoliths from the Patagonian longfin squid (Loligo gahi) » The challenge of incorporating connectivity science into coral reef management now:  principles and practice » Transgenerational marking of marine fish larvae: stable isotope retention, physiological effects and health issues » Estimating connectivity in marine populations:  an empirical evaluation of assignment tests and parentage analysis at different spatial scales » Larval dispersal connects fish populations in a network of marine protected areas » Otolith chemistry to describe movements and life-history parameters of fishes:  Hypotheses, assumptions, limitations, and inferences » Geochemical signatures in otoliths record natal origins of American shad » Markov Chain Monte Carlo methods for assigning larvae to natal sites using natural geochemical tags » Continental-scale variation in otolith geochemistry of juvenile American shad » Accelerator mass spectrometer 14C determination in CO2 produced from laser decomposition of aragonite » Temperature and salinity effects on elemental uptake in the shells of larval and juvenile softshell clams (Mya arenaria) » Mapping bathymetric and hydrographic features of Glover's Reef, Belize, with a REMUS autonomous underwater vehicle » Coral reef fish smell leaves to find island homes » Geochemical signatures in otoliths record natal origins of American shad » Laser ablation ICP-MS analysis of larval shell in softshell clams (Mya arenaria) poses challenges for natural tag studies » Recovery of temperature records from slow-growing corals by fine scale sampling of skeletons » Population connectivity and larval dispersal using geochemical signatures in calcified structures » Population connectivity in marine systems: an overview » Local retention of reef fish larvae » Ocean ecology: Don't fence me in » Variation in Serripes groenlandicus (Bivalvia) growth in a Norwegian high-Artic fjord: Evidence for local and large-scale climatic forcing. » Transgenerational marking of embryonic otoliths in marine fishes using stable barium isotopes » Water, not food, contributes the majority of strontium and barium deposited in the otoliths of a marine fish » Biophysical mechanisms of larval fish ingress into Chesapeake Bay » Minor and trace elements in sclerosponge Ceratopella nicholsoni:  Biogenic aragonite near the inorganic endmember? » Certification of a fish otolith reference material in support of quality assurance for trace element analysis » Coral reef fish larvae settle close to home » Geochemical signatures in scales records stream of origin in westslope cutthroat trout » Temperature and salinity effects on magnesium, manganese and barium in the otoliths of larval spot (Leiostomus xanthurus) » Salinity change in the subtropical Atlantic: Secular increase and teleconnections to the North Atlantic Oscillation » Diet and trophic position of Atlantic bluefin tuna (Thunnus thynnus) inferred from stable carbon and nitrogen isotope analysis » Elemental signatures in otoliths of larval walleye pollock (Theragra calcogramma) from the northeast Pacific Ocean » High resolution Sr/Ca records in sclerosponges calibrated to temperature in situ » The influence of temperature and salinity on strontium uptake in the otoliths of juvenile spot (Leiostomus xanthurus) » Stability of elemental signatures in the scales of spawning weakfish (Cynoscion regalis) » Intra-annual variation in the stable oxygen and carbon and trace element composition of sclerosponges » Evidence of self-recruitment in demersal marine populations » Quantifying larval retention and connectivity in marine populations with artificial and natural markers » Otolith applications in reef fish ecology » Otoliths, increments, and elements: keys to a comprehensive understanding of fish populations? » Natal homing in a marine fish metapopulation » Incorporation of strontium, cadmium and barium in juvenile spot (Leiostomus xanthurus) scales reflects water chemistry » Geographic variation in trace element composition of juvenile weakfish (Cynoscion regalis) scales » In situ analysis of trace elements and isotope ratios in fish otoliths using laser ablation sector field ICP-MS » Strontium and barium uptake in aragonitic otoliths of marine fish » Analysis of otolith microchemistry in Nassau grouper (Epinephelus striatus) from the Bahamas and Belize using solution-based ICPMS » Accurate classification of nursery areas of juvenile weakfish (Cynoscion regalis) based on chemical signatures in otoliths » Trace element signatures in otoliths accurately record natal river of juvenile American shad (Alosa sapidissima) » Factors determining d13C and d18O fractionation in aragonitic otoliths of marine fish » Comparison of accuracy, precision, and sensitivity in elemental assays of fish otoliths using the electron microprobe, proton-induced X-ray emission, and laser ablation inductively coupled plasma mass spectrometry » Response of otolith microchemistry to environmental variations experienced by larval and juvenile Atlantic croaker (Micropogonias undulatus) » Mesoscale distribution patterns of larval and juvenile fishes in the central Great Barrier Reef lagoon » Experimental assessment of the effect of temperature and salinity on elemental composition of otoliths using solution-based ICPMS » Experimental assessment of the effect of temperature and salinity on elemental composition of otoliths using laser ablation ICPMS » Response of ichthyoplankton assemblages to a riverine plume in the central Great Barrier Reef lagoon » Larval supply of shorefishes to nursery habitats around Lee Stocking Island, Bahamas I. Small scale distribution patterns » Onshore transport of settlement-stage Nassau grouper Epinephelus striatus and other fishes in Exuma Sound, Bahamas » Larval supply of shorefishes to nursery habitats around Lee Stocking Island, Bahamas II. Lunar and oceanographic influences » Temporal patterns in the larval supply of summer-recruiting reef fishes to Lee Stocking Island, Bahamas » Post-larval and juvenile scombrids captured in light traps: Preliminary results from the central Great Barrier Reef lagoon » Zooplankton community structure and copepod egg production in coastal waters of the central Great Barrier Reef lagoon » Evaluating the performance of light traps for sampling small fish and squid in open waters of the central Great Barrier Reef lagoon » Coupling of hydrography and pre-settlement reef fish distributions in the central Great Barrier Reef lagoon » Comparison of larval duration and pre- and post-settlement growth in two species of damselfish, Chromis atripectoralis and Pomacentrus coelestis (Pisces: Pomacentridae) from the Great Barrier Reef » Estimating some early life history parameters in a tropical herring, Herklotsichthys castelnaui, from daily growth increments in otoliths » Analysis of otolith microstructure to determine growth histories in larval cohorts of a tropical herring (Herklotsichthys castelnaui) Walther, B. D., and S. R. Thorrold, Water, not food, contributes the majority of strontium and barium deposited in the otoliths of a marine fish, Mar. Ecol. Prog. Ser. 311: 125-130, 2006 We quantified the relative contributions of food and water to strontium (Sr) and barium (Ba) deposited in otoliths from juvenile mummichogs (Fundulus heteroclitus). Fish were reared in seawater spiked with 86Sr and 137Ba significantly beyond natural values to give food and water distinct isotopic signatures. Elemental abundances (Sr:Ca and Ba:Ca) and isotopic 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 food and water sources to otolith aragonite were assessed using a simple linear isotopic 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. As a result, chemical signatures recorded in otoliths of marine fishes should reflect the ambient water composition of these elements at the time of deposition.

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