As with a large number of species, studying the biology and ecology of the Atlantic Salmon (Salmo salar L.), notably its population dynamics and life-history strategies, involves analysing its demographic characteristics. This analysis requires age estimation, essentially carried out on the basis of hard, periodic-growth structures such as scales. This new guide follows on from the 1985 guide, in order to confirm the size-age keys of current populations and to summarise the main difficulties currently encountered for interpreting scales.
Contents
- Presentation of the species: distribution, biological cycle, genetic and demographic characteristics, management and current status of salmon populations in France, populations analysed
- Collecting and preparing the scales for the scale-reading examination
- Description of the morphology and structure of the salmon scale
- Age estimation
- Examples of typical scales
- Using scales to distinguish between Atlantic Salmon, Brown Trout and Pink Salmon
- Difficulties encountered, proposed solutions and recommendations
- General recommendations
- References
Keywords: Atlantic Salmon - Salmo salar - Scale - Scale reading - Age estimation - France
Notice
- Date d’édition : June 2023
- Structure(s) autrice(s) : Institut national de recherche pour l’agriculture, l’alimentation et l’environnement (Inrae), Office français de la biodiversité (OFB)
- Editeur(s) : Office français de la biodiversité (OFB)
- Collection : Guides et protocoles
- ISBN web : 978-2-38170-175-2
- ISBN print : 978-2-38170-176-9
- Zone : Europe, France entière, Monde
- Milieux : Milieux marins (fonds, récifs, colonne d'eau), Milieux aquatiques continentaux (plans d'eau, cours d'eau, sources et berges)
- Thématiques : Milieux, Connaissances, données & diagnostics, Éducation & sensibilisation