X‐ray microtags for identification of individuals in studies of fish energetics

• Published in: Journal of Fish Biology
• Main Author: Higgins, P.J.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1985
• Subjects: Atlantic salmon; Salmo salar
• Online Access: http://dx.doi.org/10.1111/j.1095-8649.1985.tb04252.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1985.tb04252.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1985.tb04252.x

In a study following growth and food intake of individuals within a population it was important to obtain individual rather than group mean measurements. A technique is described which combined the benefits of X‐ray readable microtags with the radiographic method for measuring food intake described by Talbot & Higgins (1983). Its usefulness was established in an eight–month study on hatchery reared juvenile Atlantic salmon, Salmo salar L.