Age determination of Anguilla anguilla (L.) and related species. Marking and tagging methods applied to eel, Anguilla anguilla (L.)
This report presents a description and discussion of the different methods used in eel ageing studies during the last decade. Four main types of techniques are used: 1) grinding or slicing; 2) burning and cracking; 3) clearing of whole otoliths in alcohol; and 4) methods using advanced technology. Grinding and slicing is the most common with almost all institutes introducing their own modification of the general method. In very few cases has the validity of the method been documented. The availa ble evidence indicate that burning and cracking give a good approximation of true age. This method has proved to be accurate in a number of tests. Other method have proved useful in specific cases, but further studies are necessary.
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| Format: | Book (stand-alone) biblioteca |
| Language: | English |
| Published: |
1988
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| Online Access: | https://openknowledge.fao.org/handle/20.500.14283/ac907e http://www.fao.org/3/ac907e/ac907e00.HTM |
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