Strontium:calcium ratios in statoliths of Japanese common squid Todarodes pacificus (Cephalopoda: Ommastrephidae) as indicators of migratory behavior

Ikeda, Yuzuru; Arai, Nobuaki; Kidokoro, Hideaki; Sakamoto, Wataru

doi:10.3354/meps251169

Cited by 39 publications

(42 citation statements)

References 14 publications

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“…Inspired by an inverse relationship between Sr/Ca and temperature in scleractinian corals (Beck et al 1992), several studies have attempted to use Sr/Ca ratios in statoliths as a temperature proxy (e.g. Rodhouse et al 1994, Ikeda et al 2003. Arkhipkin et al (2004) showed a good relationship between Sr/Ca and ambient temperature in statoliths of the Patagonian longfin squid Loligo gahi collected in the field.…”

Section: Introductionmentioning

confidence: 99%

Statolith microchemistry traces the environmental history of the boreoatlantic armhook squid Gonatus fabricii

Zumholz¹,

Klügel²,

Hansteen³

et al. 2007

Mar. Ecol. Prog. Ser.

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Statoliths of the gonatid squid Gonatus fabricii from Disko Bay, West Greenland, were analysed by laser ablation inductively coupled plasma mass-spectrometry (LA-ICP-MS) to determine the concentrations and spatial distributions of 9 minor and trace elements (Sr, Ba, Mg, U, Zn, Mn, Y, Zr, Na). Element composition was assigned in situ to distinct statolith regions, corresponding to ontogenetic stages of an individual squid's life. Significant variations in concentrations of all measured elements except Na were found between different regions of the statolith. Variations in Ba/Ca ratios suggest that juveniles inhabit surface waters, while larger specimens move to deeper waters. U/Ca and Sr/Ca ratios increased towards the outer statolith region, suggesting migration of adult squid into colder waters. Mg/Ca ratios decreased progressively from the core to the edge, most likely related to changes in protein concentrations in their microstructure during ontogenesis. This study is one of the first to apply LA-ICP-MS to cephalopod statoliths. Our results emphasise the strong potential of spatially resolved statolith analyses to gather information on life history, migrations and habitat use of cephalopods. KEY WORDS: Statolith · Trace elements · Laser ablation ICP-MS · Cephalopods · Squid · Gonatus fabricii · GreenlandResale or republication not permitted without written consent of the publisher

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Section: Introductionmentioning

confidence: 99%

Statolith microchemistry traces the environmental history of the boreoatlantic armhook squid Gonatus fabricii

Zumholz¹,

Klügel²,

Hansteen³

et al. 2007

Mar. Ecol. Prog. Ser.

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“…Shen et al 1996) and gastropods (Zacherl et al 2003). For cephalopod statoliths, however, environmental influences have been proposed on the basis of field studies only (Ikeda et al 1996a(Ikeda et al , 2003Yatsu et al 1998). The only study so far that analysed statoliths from reared cephalopods found considerable variations in the Sr/Ca ratio in spite of constant conditions during rearing (Ikeda et al 2002a, b).…”

Section: Introductionmentioning

confidence: 99%

“…Durholtz et al 1997;Lipinski et al 1997;Ikeda et al 2002a, b;Bettencourt and Guerra 2000). Chemical signatures of statoliths have been used as a tool to determine environmental life-histories of the neon flying squid Ommastrephes bartramii (Yatsu et al 1998) and the Japanese common squid Todarodes pacificus (Ikeda et al 2003) as well as to distinguish stocks of the Patagonian longfin squid Loligo gahi (Arkhipkin et al 2004), yet the method remains largely unverified. It is not documented whether the Sr/Ca ratio or any other trace element signature is primarily related to ambient temperature or whether it is simultaneously influenced by salinity or other factors.…”

Section: Introductionmentioning

confidence: 99%

“…Microchemical studies on statoliths so far were based on various techniques, including particle induced X-ray emission (PIXE) (Ikeda et al 1996a, b;Lipinski et al 1997;Durholtz et al 1997), electron probe microanalysis (EPMA) (Bettencourt and Guerra 2000;Ikeda et al 2002a, b;Ikeda et al 2003), laser-ablation inductively coupled plasma mass spectrometry LA-ICP-MS (Zumholz et al 2007a), and solution based ICP-MS (Arkhipkin et al 2004). In this study, we applied Synchrotron X-ray Fluorescence Analysis (SYXRF) to cephalopod statoliths for the first time, an advanced method which provides spatially resolved determination of trace element concentrations down to 0.5 ppm.…”

Section: Introductionmentioning

confidence: 99%

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Influence of temperature and salinity on the trace element incorporation into statoliths of the common cuttlefish (Sepia officinalis)

et al. 2007

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The use of statolith chemistry to trace migration pathways and distinguish populations of cephalopods is based on the assumption that the elemental composition of statoliths is influenced by physicochemical properties of the ambient environment. However, such influences have not been investigated experimentally up until now. This study presents the first microchemical analyses of cephalopod statoliths obtained from laboratory experiments under different controlled temperature and salinity conditions. Our results show that statolith chemical composition is strongly related to both salinity and temperature in ambient waters. The Ba/Ca ratio is negatively related to temperature and shows no relation to salinity. The I/Ca ratio is positively related to temperature and negatively to salinity. No Sr/Ca relation was found to either salinity or temperature, suggesting that the well-established proxy strontium is not as useful in cephalopod statoliths as in other biomineralized aragonites. Microanalysis of trace elements, however, shows an enormous potential for field studies on distribution, migration and stock separation of cephalopods. Furthermore, Synchrotron X-ray Fluorescence Analysis is introduced as a promising novel method for statolith analysis, providing a spatial resolution of typically 10-15 lm combined with detection limits down to 0.5 ppm.

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“…Lea & Spero 1994, Brown & Luoma 1995, Shen et al 1996, Alibert & McCulloch 1997, Rosenthal et al 1997, Tzeng et al 1997, Secor et al 2001, Ikeda et al 2003, Zacherl et al 2003). Environmental histories commonly described include water temperature (Alibert & McCulloch 1997), salinity (Kafemann et al 2000) and ambient elemental concentrations (Secor et al 2001), all of which can reconstruct past climatic conditions.…”

Section: Introductionmentioning

confidence: 99%

Strontium incorporation into calcified structures: separating the effects of ambient water concentration and exposure time

Elsdon¹,

Gillanders²

2005

Mar. Ecol. Prog. Ser.

108

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Chemical elements within calcified structures of organisms such as fish, corals, bivalves, gastropods and foraminiferal shells can provide a record of the environmental characteristics at the time of calcification. To predict accurately the environmental characteristics at the time of calcification, it is important to understand the influence of exposure time on elemental incorporation. We examined the effect of enhanced ambient strontium:calcium (Sr:Ca) (2 × and 4 × ambient concentrations) and different periods of exposure (2, 4, 8, 16 and 32 d) on Sr:Ca uptake and incorporation into fish otoliths of the black bream Acanthopagrus butcheri (family: Sparidae). Sr:Ca ratios (hereafter referred to as concentrations) in bream otoliths increased with increasing ambient concentrations, with the amount of Sr:Ca incorporated into otoliths being positively affected by the period of exposure. Saturation of Sr:Ca in otoliths occurred after 20 d of exposure. Importantly, by measuring multiple variables of elemental uptake and incorporation, the relative effect of enhanced concentration and exposure time can be separated, which to date has not been possible. This research will allow for greater accuracy when interpreting environmental histories of fish. KEY WORDS: Trace element · Strontium · Laser ablation ICP-MS · Uptake · Exposure · Transects · Migration Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 285: [233][234][235][236][237][238][239][240][241][242][243] 2005 result in instantaneous changes in elements within calcified structures. Consequently, the rate at which elements are incorporated into calcified structures would affect the interpretation of environmental histories, both spatially and temporally.The time required for elements to be incorporated into calcified structures is largely unknown, although there have been several attempts to examine the effect of exposure time to enhanced elemental concentrations on the uptake and incorporation of elements in fish otoliths, spines and vertebrae (Snyder et al. 1992, Ennevor & Beames 1993, Brown & Harris 1995, Pollard et al. 1999). Due to technical constraints, all of these experiments analysed whole calcified structures using solution-based techniques (e.g. whole otolith), and, in doing so, the derived elemental signatures were a mixture over the entire chronology of the structure. As reconstructions of environmental histories require high resolution of elemental concentrations, sample analysis requires the use of fine-scale micromilling or laser instruments (Elsdon & Gillanders 2003a). Nevertheless, experiments using solution-based techniques have shown that an increased period of exposure to environmental variables results in enhanced concentrations of elements being incorporated into calcified structures of fish (e.g. Pollard et al. 1999). Further experiments using more modern sample analysis are needed to assess the effects of exposure time on elemental incorporation; these experiments will provide more ...

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Strontium:calcium ratios in statoliths of Japanese common squid Todarodes pacificus (Cephalopoda: Ommastrephidae) as indicators of migratory behavior

Cited by 39 publications

References 14 publications

Statolith microchemistry traces the environmental history of the boreoatlantic armhook squid Gonatus fabricii

Statolith microchemistry traces the environmental history of the boreoatlantic armhook squid Gonatus fabricii

Influence of temperature and salinity on the trace element incorporation into statoliths of the common cuttlefish (Sepia officinalis)

Strontium incorporation into calcified structures: separating the effects of ambient water concentration and exposure time

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