Age determination and growth of yellow eels, Anguilla anguilla (L.), from a brackish water, Norway

• Published in: Journal of Fish Biology
• Main Author: Vøllestad, L. A.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1985
• Subjects: Norway; Anguilla anguilla
• Online Access: http://dx.doi.org/10.1111/j.1095-8649.1985.tb04292.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1985.tb04292.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1985.tb04292.x

This paper describes the age determination of European yellow eels from a brackish water area in south‐east Norway. Two different methods were used; clearing in 96% ethanol or burning and cracking. When reading the otoliths twice using the same method, the same age was found in 40% of the readings, a discrepancy of 1 year was found in another 40% of the readings (both methods). Burning and cracking yielded age estimates which were on average 1.25 years higher than those obtained by clearing.