|
|||||
|
|
Occurrence of the semi-catadromous European eel Anguilla anguilla in the Baltic Sea |
|
| Authors: | W. N. Tzeng C. H. Wang H. Wickström M. Reizenstein |
| Affiliation: | (1) Department of Zoology, College of Science, National Taiwan University, Taipei, Taiwan 10617, R.O.C. Tel.: +886-2-23639570; Fax: +886-2-23636837 e-mail: wnt@ccms.ntu.edu.tw, TW;(2) National Board of Fisheries, Institute of Freshwater Research, 178 93 Drottningholm, Sweden, SE |
| 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. Received: 30 September 1999 / Accepted: 6 April 2000 |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |