Factors influencing Sr/Ca ratios in otoliths of <i>Girella elevata</i>: an experimental investigation

Gallahar, N. K.; Kingsford, M. J.

doi:10.1111/j.1095-8649.1996.tb01111.x

Cited by 45 publications

(55 citation statements)

References 34 publications

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“…In those studies that altered dietary intake of elements, several authors reported no influence of diet (Hoff & Fuiman 1995, Milton & Chenery 2001, while others found detectable effects of diet on otolith chemistry (Limburg 1995, Gallahar & Kingsford 1996, Buckel et al 2004. Of the studies that reported detectable dietary effects on otolith chemistry, Limburg (1995) and Gallahar & Kingsford (1996) found small effects on otolith Sr content when fish were fed Sr-spiked food. Buckel et al (2004), however, reported that Sr increased by approximately 20% and Ba increased by 100% in otoliths of juvenile bluefish fed prey that differed in Sr and Ba concentration by approximately 250%.…”

Section: Discussionmentioning

confidence: 99%

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Water, not food, contributes the majority of strontium and barium deposited in the otoliths of a marine fish

Walther¹,

Thorrold²

2006

Mar. Ecol. Prog. Ser.

284

203

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We quantified the relative contributions of water and food to strontium (Sr) and barium (Ba) Ba 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. KEY WORDS: Otolith · Element uptake · Sr isotope · Ba isotope · Water sources Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 311: [125][126][127][128][129][130] 2006 water and diet is important because we would only expect otolith chemistry to reflect dissolved concentrations in the environment if water were the primary source of ions in the otoliths.Traditionally, water was thought to contribute most to the composition of calcareous structures in teleosts (Schiffman 1961, Berg 1968, Simkiss 1974, Hoff & Fuiman 1995, Farrell & Campana 1996, Gallahar & Kingsford 1996. However, dietary composition may also influence otolith chemistry. The elemental composition of otoliths has been shown to reflect diet in both freshwater (Limburg 1995, Kennedy et al. 2000 and marine (Buckel et al. 2004) fishes. We sought to address these discrepancies by rearing juvenile mummichogs Fundulus heteroclitus in seawater spiked with enriched Sr and Ba isotopes beyond the natural isotope ratios found in food. This experimental approach provided a definitive test of the relative contributions of water and diet to otolith composition. MATERIALS AND METHODSFish-rearing conditions. Mummichogs are estuarine killifish that occupy marsh habitats along the east coast of North America from Florida to Newfoundland (Collette & Klein-MacPhee 2002). Individuals were collected from Eel Pond in Woods Hole, Massachusetts, using baited minnow traps set during spring tides in June 2002. Eggs were manually extracted from gravid females and fertilized in vitro by commingling eggs and diced testes from sacrificed males in Petri dishes containing filtered natural seawater. The pieces of testes were removed after 24 h. Eggs developed in Petri dishes at a room temperature of 19°C and seawater was changed every 3 d. Eggs hatched after approximately 28 d and the larvae were then transferred to experimental tanks.High-density polyethylene tanks were filled with 10 l filtered natural seawater at a salinity of 30 (PSU). Replicate control tanks contained unaltered seawater, while treatment tanks were spiked with 1 mg 86 Sr and 50 μg 137 Ba each. Stable isotopes were purchased from Oak Ridge National Laboratory, Tennessee, USA. After treatment tanks were spiked, 10 fish were added to each tank, except for 1 control tank that contained only 9 fi...

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Section: Discussionmentioning

confidence: 99%

“…Traditionally, water was thought to contribute most to the composition of calcareous structures in teleosts (Schiffman 1961, Berg 1968, Simkiss 1974, Hoff & Fuiman 1995, Farrell & Campana 1996, Gallahar & Kingsford 1996. However, dietary composition may also influence otolith chemistry.…”

Section: Introductionmentioning

confidence: 99%

Water, not food, contributes the majority of strontium and barium deposited in the otoliths of a marine fish

Walther¹,

Thorrold²

2006

Mar. Ecol. Prog. Ser.

284

203

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“…Element composition of biogenic aragonites is thought to depend mainly on physicochemical properties of the surrounding water (Campana 1999). Nevertheless, it has been repeatedly reported that endogenous factors such as diet might have an eVect on the element compositions of Wsh otoliths (Limburg 1995;Farrell and Campana 1996;Gallahar and Kingsford 1996;Buckel et al 2004) as well as cephalopod statoliths (Zumholz et al 2006), since cations entering the inner ear endolymph via the blood circuit can originate either from branchial or intestinal uptake (Campana 1999). Previous investigations on the importance of food on element incorporation into otoliths were highly ambiguous.…”

Section: Introductionmentioning

confidence: 99%

“…Walther and Thorrold (2006) concluded that Sr and Ba contents in marine Wsh otoliths clearly reXect ambient Sr and Ba concentrations, while Kennedy et al (2000) reported 70% of the Sr isotopic signature in freshwater Atlantic salmon (Salmo salar) otoliths to originate from food. SigniWcant dietary eVects on strontium incorporation have been demonstrated for American shad (Alosa sapidissima) (Limburg 1995) and Black bream (Girella elevata) (Gallahar and Kingsford 1996) and for strontium and barium incorporation in blueWsh (Pomatomus saltatrix) (Buckel et al 2004). No eVects were detected for the uptake of magnesium, potassium, strontium, sodium, and calcium in Red drum (Sciaenops ocellatus) (HoV and Fuiman 1995), for strontium, copper and lead in barramundi (Milton and Chenery 2001), for sodium, magnesium, potassium, calcium and manganese in blueWsh (P. saltatrix) (Buckel et al 2004) and for strontium in Japanese eel (Anguilla japonica) (Lin et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Dietary effects on multi-element composition of European eel (Anguilla anguilla) otoliths

et al. 2009

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Otolith microchemistry is widely used as a tool to track individual migration pathways of diadromous Wsh under the assumption that the elemental composition of Wsh otoliths is directly inXuenced by the physicochemical properties of the surrounding water. Nevertheless, several endogenous factors are reported to aVect element incorporation into Wsh otoliths and might lead to misinterpretations of migration studies. This study experimentally examined the inXuence of eight diVerent diets on the microchemical composition of European eel (Anguilla anguilla) otoliths using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Seven natural prey types and one artiWcial diet were fed during 8 weeks in freshwater circuits. Results show for the Wrst time that food has no signiWcant inXuence on the incorporation of Na, Sr, Ba, Mg, Mn, Cu and Y into European eel otoliths. This indicates that the incorporation of elements usually chosen for migration studies is not aVected by diet and that individual feeding behaviour of A. anguilla will not lead to any misinterpretation of migration pathways.

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“…Mn). Chemical marking studies using Sr have also found a relationship between Sr concentration in otoliths (and bone) and ambient Sr concentrations (Gallahar & Kingsford 1996, Pollard et al 1999. Geffen et al (1998), however, found an inverse relationship between exposure and rate of lead incorporation in otoliths.…”

Section: Spatial Differences In Elemental Composition Of Otolithsmentioning

confidence: 99%

Elemental fingerprints of otoliths of fish may distinguish estuarine 'nursery' habitats

Gillanders¹,

Kingsford²

2000

Mar. Ecol. Prog. Ser.

170

114

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The elemental fingerprints or composition of otoliths of fish may provide a natural tag of the 'nursery' habitat of juvenile fish. The natural tag could then be used to determine the 'nursery' habitat of adult fish found on coastal reefs. We collected juvenile Pelates sexlineatus from 2 to 5 sites within each of 7 estuaries to determine whether elemental composition of otoliths differed among estuaries and among sites within estuaries. In addition, fish were collected in 2 successive years to determine whether temporal differences may be found in elemental fingerprints that could then confound subsequent assignment of adults to 'nursery' estuaries. Significant differences in elemental fingerprints (Sr, Ba and Mn) were found within and among estuaries, but there was often an interaction with time suggesting that there were differences among estuaries/sites but the difference varied between times. Quadratic discriminant functions (QDFs) generated to discriminate among estuaries suggested that the QDFs calculated from a single year class were more successful at assigning fish to the correct estuary than either (1) QDFs based on both years combined or (2) using the QDFs generated from the first year class to classify the second year class. Small-scale variability among sites within an estuary suggested that for an estuarine fishery we may be able to classify fish to their site of origin; this warrants further investigation. Adult fish from a coastal fishery can now be assigned to their 'nursery' estuary by analysing the juvenile region of their otoliths, provided that discriminant functions are generated from the appropriate year class of recruits. KEY WORDS: Estuarine nursery area · Otolith microchemistry · Trace elementsResale or republication not permitted without written consent of the publisher

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Factors influencing Sr/Ca ratios in otoliths of Girella elevata: an experimental investigation

Cited by 45 publications

References 34 publications

Water, not food, contributes the majority of strontium and barium deposited in the otoliths of a marine fish

Water, not food, contributes the majority of strontium and barium deposited in the otoliths of a marine fish

Dietary effects on multi-element composition of European eel (Anguilla anguilla) otoliths

Elemental fingerprints of otoliths of fish may distinguish estuarine 'nursery' habitats

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