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Occurrence of the semi-catadromous European eel Anguilla anguilla in the Baltic Sea

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Abstract

Strontium (Sr) and calcium (Ca) contents in the otoliths of yellow and silver European eels [Anguilla anguilla (L.)] collected from coastal waters of the Baltic Sea and a freshwater lake in Sweden were examined by wavelength dispersive X-ray spectrometry with an electron microprobe. The mean Sr/Ca ratios from elver check to otolith edge were significantly higher for the eels from coastal waters (5.39 ± 1.09‰) than for those from the lake (0.71 ± 0.89‰). The evidence indicates that European eels in the Baltic Sea do not necessarily migrate into freshwater streams during the growth phase.

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Received: 30 September 1999 / Accepted: 6 April 2000

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Tzeng, W., Wang, C., Wickström, H. et al. Occurrence of the semi-catadromous European eel Anguilla anguilla in the Baltic Sea. Marine Biology 137, 93–98 (2000). https://doi.org/10.1007/s002270000330

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  • DOI: https://doi.org/10.1007/s002270000330

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