Growth Of European Eel In A Turkish River At The South-Eastern Limit Of Its Distribution

 

Şükran. Yalçın-özdilek1, Aysun. Gümüş2, Willem. Dekker3

 

1 Çanakkale Onsekiz Mart University, Education Faculty, Anafartalar Campus, 17100 Çanakkale, Turkey.

2 19 Mayıs University, Faculty of Science and Letters, Biology Department, 55139 Kurupelit Samsun, Turkey.

3 Netherlands Institute for Fisheries Research PO Box 68, 1970 AB Ijmuiden, the Netherlands

Corresponding Author: Dr. Şükran Yalçın-Özdilek Çanakkale Onsekiz Mart University, Education Faculty, Anafartalar Campus, 17100 Çanakkale Turkey

Tel. 90 286 217 13 03, Fax. 90 286 212 07 51

E-mail: yalcin.ozdilek@gmail.com

 

Abstract: European eel, Anguilla anguilla L., has a wide distribution from polar to arid climates. The growth and sex in eels from the River Asi, which is in the most arid region of the species distribution, and at a temperature of 21-27 ºC close to the experimentally determined optimum for the eel were examined. A total of 315 European eels were collected between January 1997 –May 1998 and April 2003. Growth was fast, with a high asymptotic length. Temperature is the main factor driving to growth; apparently, growth does not cease during the hot, arid summer. Since these fastest growing stocks will be of major significance for overall dynamics of the whole population, further studies of these southern eels will be required.

 

Key words: Anguilla anguilla, Asi River, European eel, growth, temperature, Turkey

 

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