Tracking continental habitat shifts of eels using otolith Sr/Ca ratios: validation and application to the coastal, estuarine and riverine eels of the Gironde - Garonne - Dordogne watershed

Daverat, Françoise; Tomás, Javier; Lahaye, Michel; Palmer, Miquel; Élie, Pierre

doi:10.1071/mf04175

Cited by 75 publications

(94 citation statements)

References 19 publications

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“…In recent years, microchemical analyses primarily focusing on strontium concentrations were frequently used to track individual migration pathways of wild caught eels (e.g. Tzeng et al 1997;Tsukamoto et al 1998;Limburg et al 2003;Arai et al 2004;Daverat et al 2005;Jessop et al 2006;Shiao et al 2006). The correlation between Sr/Ca ratios and ambient salinities is well established and the strontium content in otoliths is comparatively high and therefore easy to measure.…”

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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Section: Introductionmentioning

confidence: 99%

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

et al. 2009

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“…The tide carries them to the coast, where they transform, first into elvers and then small yellow eels that colonize growth areas. Some of them settle in coastal water and estuaries, but others colonize freshwater (Daverat et al, 2005). This growth stage commonly lasts from 1 to more than 15 years .…”

Section: Introductionmentioning

confidence: 99%

Assessing the freshwater distribution of yellow eel

Lasne

Laffaille

2008

Knowl. Managt. Aquatic Ecosyst.

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In the global context of the decline in wild species, modeling the distribution of populations is a crucial aspect of ecological management. This can be a major challenge, especially for species, such as the European eel, that have complex life cycles, exhibit cryptic behavior, or migrate over long distances. A review of the literature suggests that eel size data could be used to assess and analyze freshwater distribution of eel. We argue that analyses based on small yellow eels (≤ 300 mm) along the longitudinal course of rivers could provide a valuable tool for population monitoring. We propose a standardized catchment recruitment index and a colonization index based on the probability of occurrence (presence/absence data) using logistic models for different size classes. The model developed here provides a convenient guide for assessing yellow eel stages in freshwater areas, and should have concrete applications for management of the species. RÉSUMÉ Évaluation de la distribution des anguilles jaunes en eau douceDans le contexte actuel de déclin des espèces, la modélisation de la distribution des populations est une étape importante pour la gestion de la biodiversité. Cependant, cette modélisation peut s'avérer difficile, particulièrement pour les espèces qui, comme l'anguille européenne, possèdent des cycles de vie complexes, ont un mode de vie cryptique ou effectuent de grandes migrations. Un examen de la littérature suggère que la taille des anguilles peut être utilisée comme critère pour évaluer et analyser la distribution des anguille en eau douce. Nous suggérons que l'examen des patrons de distribution des petites anguilles (≤ 300 mm) le long des réseaux hydrographiques peut fournir des informations précieuses pour le suivi des populations. Nous proposons un indice standardisé de recrutement et de colonisation des bassins versants sur la

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“…Representative case studies of Daverat et al (2005), Tzeng et al (2005), McCulloch et al (2005), Dorval et al (2005) and Hobbs et al (2005) demonstrated the utility of otolith chemistry in tracking movements and/or habitat shifts throughout the life history of fish, which, in turn, can be used to infer stock structure and population connectivity (Fowler et al 2005;Stransky et al 2005). Similarly, Gillanders and Joyce (2005) used otolith chemistry to differentiate aquaculture and wild-harvest yellowtail kingfish (Seriola lalandi), whereas Niva et al (2005) examined the effectiveness of alizarin-red-stained otoliths as a cost-effective mass-marking tool.…”

Section: Chemical Composition and Applications To Climate Ecology Anmentioning

confidence: 99%

Otolith research and application: current directions in innovation and implementation

Begg

Campana

Fowler

et al. 2005

Mar. Freshwater Res.

119

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Abstract. The Third International Symposium on Fish Otolith Research and Application was held in Townsville, Queensland, Australia from 11 to 16 July 2004. The overall theme was 'Innovation and Implementation', a collection of which is published here (Volume 56, Issue 5). Although age and growth studies predominated at the Symposium, new areas of quality-control assurance, annual-increment formation in deep-sea and tropical fish, image analysis and two-dimensional feature extraction were demonstrated. New statistical approaches were also evident, particularly in the subsampling of commercial data for estimating age compositions. The chemical composition of otoliths as natural data loggers has greatly advanced since the 1998 Symposium, with the advent of micromilling machines, new instrumentation and the use of isotopes rather than elements as environmental indicators. Otoliths will continue to support modern environmental needs for fisheries, marine park assessment, metapopulation conservation and the management of stocks and biodiversity of fish.

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Tracking continental habitat shifts of eels using otolith Sr/Ca ratios: validation and application to the coastal, estuarine and riverine eels of the Gironde - Garonne - Dordogne watershed

Cited by 75 publications

References 19 publications

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

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

Assessing the freshwater distribution of yellow eel

Otolith research and application: current directions in innovation and implementation

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