Drastic changes in otolith microstructure and microchemistry accompanying the onset of metamorphosis in the Japanese eel Anguilla japonica

Arai, Takaomi; Otake, Tsuguo; Tsukamoto, Katsumi

doi:10.3354/meps161017

Cited by 174 publications

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“…Anguilla australis sampling sites, dates and sample sizes collected from 6 Australian estuaries (Sites A1 to A6) and 2 New Zealand estuaries (Sites A7 to A8) (sites are shown in Fig. 1 The timing of metamorphosis from leptocephali to glass eels was determined from the drastic increase of increment width coinciding with the decrease in Sr:Ca ratios (Otake et al 1994, Tzeng & Tsai 1994, Arai et al 1997, Wang & Tzeng 1998, Arai et al 1999a. However, some checks were formed in the otoliths after the glass eels entered the estuaries.…”

Section: Methodsmentioning

confidence: 99%

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Dispersal pattern of glass eel stage of Anguilla australis revealed by otolith growth increments

Shiao¹,

Tzeng²,

Collins³

et al. 2001

Mar. Ecol. Prog. Ser.

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Section: Methodsmentioning

confidence: 99%

“…The decrease in the Sr:Ca ratio coincided with a drastic increase in increment width. The simultaneous changes in increment width and Sr:Ca ratio indicates metamorphosis from the leptocephalus to the glass eel stage (Otake et al 1994, Tzeng & Tsai 1994, Arai et al 1997, Wang & Tzeng 1998, Arai et al 1999a.…”

Section: Otolith Microstructure and Sr:ca Ratiosmentioning

confidence: 99%

Dispersal pattern of glass eel stage of Anguilla australis revealed by otolith growth increments

Shiao¹,

Tzeng²,

Collins³

et al. 2001

Mar. Ecol. Prog. Ser.

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“…For electron microprobe analyses, all otoliths were Pt-Pd coated by a high vacuum evaporator. Life-history transect analyses of Sr and Ca concentrations, were performed along a line down the longest axis of each otolith from the core to the edge using a wavelength dispersive X-ray electron microprobe (JEOL JXA-8900R), as described in Arai et al (1997. Calcite (CaCO 3 ) and strontianite (SrCO 3 ) were used as standards, and the accelerating voltage and beam current were 15 kV and 1.2 x 10 -8 A, respectively.…”

Section: Otolith Microchemical Analysesmentioning

confidence: 99%

Application of laser ablation ICPMS to trace the environmental history of chum salmon Oncorhynchus keta

Arai

Hirata

Takagi

2007

Marine Environmental Research

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Trace element levels in otoliths of chum salmon Oncorhynchus keta were examined by means of laser ablation inductivity coupled plasma mass spectrometry (LA-ICPMS). A close linear relationship in the Sr:Ca ratios between EPMA (X-ray analysis with an electron microprobe) and LA-ICPMS analyses was found (p<0.0001), suggesting that the latter technique could be used to separate the marine and freshwater life phases. Mg:Ca, Cr:Ca, Zn:Ca and Ba:Ca ratios in either the core region or the oceanic growth zone of the otoliths varied among sites. These differences suggest that elemental compositions may reflect environmental variability among spawning (breeding) or habitat sites. Thus, those element ratios demonstrate the potential to be used to distinguish between fish spawning (breeding) sites and habitats for this species of salmon.

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“…Les stades de pigmentation (ELIE et al, 1982) ne peuvent être considérés comme un indice du temps passé en estuaire car la température influence davantage le processus de mélanisation des cellules que le temps. L'étude des microstructures des otolithes de civelles est largement répandue sur différentes espèces du genre Anguilla (ARAI et al, 1997 ;ARAI et al, 1999 ;ARAI et al, 2000). L'objectif de ce travail est de mettre en parallèle la formation de la double marque de transition en estuaire et le développement de la pigmentation à partir de l'étude des lots de civelles capturées en mer et en estuaire.…”

Section: Introductionunclassified

Caracteristiques Biologiques Des Civelles (Anguilla Anguilla) Lors De La Transition en Estuaire.

Lecomte-Finiger

Prouzet

2003

Bull. Fr. Pêche Piscic.

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. M.N. DE CASAMAJOR (1) (2), R. LECOMTE-FINIGER (2) ET P. PROUZET (1)__________ RÉSUMÉAu cours de la saison de migration 1999/2000, de novembre à mars, un échantillonnage de civelles est réalisé dans le sud-ouest de la France. L'objectif de cet échantillonnage est de déterminer, à partir des caractéristiques biologiques (taille, masse, pigmentation, ADN/Poids sec, teneur en eau et otolithométrie) des individus capturés en zone côtière et estuarienne les modifications des paramètres biologiques des civelles entre ces deux secteurs géographiques. Un amaigrissement des individus est observé au cours de la traversée de l'estuaire en décembre ce qui n'est pas visible en février. Cependant, certains individus capturés en mer présentent une marque de transition en estuaire surtout en février. Le développement de la pigmentation suit les mêmes tendances que le développement des otolithes sauf pour les civelles au stade V B . La définition du type d'otolithe est un indicateur plus précis que le développement pigmentaire pour déterminer le développement physiologique des individus. Les mesures des distances des différentes structures inscrites sur l'otolithe reflètent un passé larvaire similaire. Seul le rayon total de l'otolithe diffère entre les civelles capturées en mer et en estuaire en raison de la croissance de l'otolithe pendant la phase de transition. Il apparaît à partir des données biochimiques, otolithométriques et pigmentaires un mélange important des flux de civelles en février. Mots clés : civelle, otolithe, ADN/Poids sec, migration estuarienne, pigmentation BIOLOGICAL CHARACTERISTIC OF GLASS EELS (ANGUILLA ANGUILLA)AT THE TIME OF TRANSITION IN ESTUARY. ABSTRACTDuring the season of migration 1999/2000, from November to March, a glass eels sampling was carried out in the south-west part of France. The objective of this sampling was to determine from the biological characteristics (size, mass, pigmentation, DNA/dry Weight, water content and otolithometry) the modifications of the biological parameters of glass eels between coastal zone and estuary. A slimming of the individuals was observed during the crossing of the estuary in December but not in February. However, some individuals captured at sea present a mark of transition in estuary particularly in February. The development of pigmentation follows the same tendencies as the development of otoliths except for the glass eels at the stage V B . The definition of the type of otolith is an indicator more precise than the pigmentary development to determine the physiological state of the individuals. Measurements of the distances from the various structures registered on the otolith reflect a similar larval -109 - Bull. Fr. Pêche Piscic. (2003) 368 : 109-124 Article available at http://www.kmae-journal.org or http://dx.doi.org/10.1051/kmae:2003040 past. Only the total ray of the otolith differs between glass eels captured at sea and in estuary because of the growth of the otolith during the phase of transition. It appears starting from the data biochemical,...

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Drastic changes in otolith microstructure and microchemistry accompanying the onset of metamorphosis in the Japanese eel Anguilla japonica

Cited by 174 publications

References 0 publications

Dispersal pattern of glass eel stage of Anguilla australis revealed by otolith growth increments

Dispersal pattern of glass eel stage of Anguilla australis revealed by otolith growth increments

Application of laser ablation ICPMS to trace the environmental history of chum salmon Oncorhynchus keta

Caracteristiques Biologiques Des Civelles (Anguilla Anguilla) Lors De La Transition en Estuaire.

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