Incorporation of strontium into otoliths of an estuarine fish

Kraus, Richard T.; Secor, David H.

doi:10.1016/j.jembe.2003.10.004

Cited by 228 publications

(221 citation statements)

References 32 publications

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“…For juvenile blacktip sharks examined here, there were regional differences in Sr : Ca and Ba : Ca that were inversely related. However, it is difficult to attribute this pattern to regional differences in salinity without water chemistry data because the amount of Sr and Ba in freshwater end members will affect the amount of Sr and Ba available at a particular salinity (Wells et al 2003;Kraus and Secor 2004). Moreover, several factors, including growth rate, ontogeny, temperature and diet, can affect the relationship between water chemistry and element : Ca deposition in calcified structures (for a review, see Sturrock et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Do vertebral chemical signatures distinguish juvenile blacktip shark (Carcharhinus limbatus) nursery regions in the northern Gulf of Mexico?

Lewis

Patterson

Carlson

et al. 2016

Mar. Freshwater Res.

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Abstract. Identifying and protecting shark nurseries is a common management strategy used to help rebuild overfished stocks, yet we know little about connectivity between juvenile and adult populations. By analysing trace metals incorporated into vertebral cartilage, it may be possible to infer natal origin based on nursery-specific chemical signatures.To assess the efficacy of this approach, we collected juvenile blacktip sharks (Carcharhinus limbatus; n ¼ 93) from four regions in the Gulf of Mexico in 2012 and 2013 and analysed their vertebral centra with laser ablation-inductively coupled plasma-mass spectrometry. We observed significant regional differences in six element : Ca ratios in both 2012 and 2013. Multi-element chemical signatures were significantly different among regions and between year-classes. Year-class-specific linear discriminant function analysis yielded regional classification accuracies of 81% for 2012 and 85% for 2013, although samples were not obtained from all four regions in 2012. Combining year-classes resulted in an overall classification accuracy of 84%, thus demonstrating the usefulness of this approach. These results are encouraging yet highlight a need for more research to better evaluate the efficacy of vertebral chemistry to study elasmobranch population connectivity.

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Section: Discussionmentioning

confidence: 99%

Do vertebral chemical signatures distinguish juvenile blacktip shark (Carcharhinus limbatus) nursery regions in the northern Gulf of Mexico?

Lewis

Patterson

Carlson

et al. 2016

Mar. Freshwater Res.

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“…In general, the Sr concentration in otoliths of freshwater, estuarine, and anadromous fish species correlates positively with the salinity (e.g., Kraus andSecor 2004, Sturrock et al 2012); however, this relationship depends on the species and should be analyzed before being used in fish stock identification, connectivity, and migration studies. Particularly in marine species, the relationship between otolith Sr and salinity tends to be weak (Brown andSeverin 2009, Sturrock et al 2012).…”

Section: Los Alisos Dammentioning

confidence: 99%

“…In view of the positive relationship that exists between salinity and the strontium:calcium (Sr:Ca) ratio in water and some fish otoliths (Secor et al 1995, Zlokovitz et al 2003, Kraus and Secor 2004, Schuchert et al 2010, Tabouret et al 2010, studies relating water parameters (Sr:Ca and salinity) and the otolith Sr:Ca ratio have been able to identify fish stocks and migratory routes (e.g., Secor et al 1995;Zlokovitz et al 2003;Tabouret et al 2010;Avigliano et al 2015bAvigliano et al , 2015c. Otolith morphometrics are also used to identify fish stocks (e.g., Longmore et al 2010, Cañás et al 2012, Keating et al 2014.…”

Section: Introductionmentioning

confidence: 99%

Otolith Sr:Ca ratio and morphometry as indicators of habitat of a euryhaline species: The case of the silverside Odontesthes bonariensis

Avigliano

Villatarco²,

Volpedo

2015

Cienc. Mar.

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ABSTRACT. The silverside Odontesthes bonariensis is a euryhaline species native of South America and represents a very important fishing resource for the Plata Basin (Argentina and Uruguay). This study compares the Sr:Ca ratio of water as well as the Sr:Ca ratio and morphometry of the sagittal otolith of the silverside present in different environments (one salt lake, two freshwater dams, one lagoon, and one estuary) in order to evaluate the use of these variables as markers of habitat. The pattern of the Sr:Ca ratio in the water agrees with the one found in the otoliths, showing a positive relationship with the conductivity of the water. Univariate and multivariate analyses of variance indicated significant differences (P < 0.05) among the localities studied for the morphometric indices. The discriminant function analysis provided a high percentage of correctly classified individuals for the saltwater environment (100%) and the lentic water bodies and estuary (60-80%), circularity and form factor being the most relevant morphometric variables. These results indicate that the Sr:Ca ratio and otolith morphometry are good markers of habitat for this important resource.Key words: morphometry, Sr:Ca, otolith, Odontesthes bonariensis, Argentina. RESUMEN. El pejerreyOdontesthes bonariensis es una especie eurihalina nativa de Sudamérica y representa un importante recurso pesquero para la cuenca del Plata (Argentina y Uruguay). En este estudio se comparó la relación Sr:Ca del agua y la relación Sr.:Ca y morfometría de los otolitos sagittae de pejerreyes presentes en diferentes ambientes (un lago de agua salada, dos embalses de agua dulce, una laguna y un estuario) con el objetivo de evaluar el uso de estas variables como marcadores de hábitat. El patrón de la relación Sr:Ca del agua concuerda con la hallada en los otolitos, mostrando una relación positiva con la conductividad del agua. Los análisis univariados y multivariados indicaron diferencias (P < 0.05) entre las localidades estudiadas para los índices morfométricos. El análisis discriminante mostró un elevado porcentaje de individuos correctamente clasificados para el ambiente de agua salada (100%), los cuerpos de agua lenticos y el estuario (60-80%), siendo la circularidad y el factor de forma los índices morfométricos de mayor relevancia para esta clasificación. Estos resultados indican que la relación Sr:Ca y la morfometría del otolito son buenos marcadores de hábitat para este importante recurso.

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“…Sr and Ba are particularly suitable to reconstruct environmental history and infer migration patterns of diadromous fish (Campana 2005) since the concentration of Sr is substantially higher in seawater than in estuaries or freshwater ecosystems (Secor & Rooker 2000, Kraus & Secor 2004, while the opposite trend is observed for Ba (Elsdon & Gillanders 2006, Miller 2011. Variations of these relationships between otolith and ambient concentrations may occur as a function of fish physiology (Yamashita et al 2000) or local geology (Kraus & Secor 2004, Elsdon & Gillanders 2006. The combined analysis of Sr:Ca and Ba:Ca ratios along the growth plane of otoliths provides a powerful discriminative tool to retrospectively track fish migration and assign environments based on salinity.…”

Section: Introductionmentioning

confidence: 99%

Plasticity of European flounder life history patterns discloses alternatives to catadromy

Daverat¹,

Morais²,

Dias³

et al. 2012

Mar. Ecol. Prog. Ser.

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European flounder Platichthys flesus life history patterns were investigated in 3 basins along a latitudinal gradient (Minho, N Portugal; Gironde, SW France; Seine, N France). We used coupled Sr:Ca and Ba:Ca otolith signatures and microstructure to retrospectively determine habitats occupied by flounder during their life, including early larval ontogeny. Flounder exhibited high life history plasticity among and even within basins, apparent by the diversity of habitats used during larval ontogeny and throughout their lives, and by the age at which flounder migrated to freshwater. Egg signatures probably had a strong maternal influence, and our interpretation suggests that flounder spawned and/or hatched predominantly in brackish waters in the Minho, while in the Gironde and Seine, flounder spawned and/or hatched either in coastal, brackish or freshwater environments. The freshwater egg signature was most frequent in the Seine. These interpretations contradict the current general assumption that flounder spawn exclusively in coastal waters. During pre-metamorphosis and metamorphosis, flounder were predominantly in brackish waters in the Minho, while in the Gironde and Seine, they were mainly in coastal and freshwater environments, respectively. The diversity of flounder life histories (LH) (i.e. sequence of habitat residence: freshwater, brackish or coastal) after metamorphosis was similar between the Minho (LH = 13), Gironde (LH = 13) and Seine (LH = 14) basins. The age at which flounder migrated to freshwater also varied among sites, at an earlier age in the Minho and Gironde (< 0.5 yr old) than in the Seine, where flounder migrating from the coast into freshwater reached maximum frequencies at age 1.3 yr old. Thus, catadromy in European flounder may be facultative, and the factors influencing flounder high LH plasticity deserve thorough research.

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Incorporation of strontium into otoliths of an estuarine fish

Cited by 228 publications

References 32 publications

Do vertebral chemical signatures distinguish juvenile blacktip shark (Carcharhinus limbatus) nursery regions in the northern Gulf of Mexico?

Do vertebral chemical signatures distinguish juvenile blacktip shark (Carcharhinus limbatus) nursery regions in the northern Gulf of Mexico?

Otolith Sr:Ca ratio and morphometry as indicators of habitat of a euryhaline species: The case of the silverside Odontesthes bonariensis

Plasticity of European flounder life history patterns discloses alternatives to catadromy

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