Titre :	Stock characteristics of Atlantic salmon (salmo salar) in France : a review
Type de document :	texte imprimé
Auteurs :	Prouzet, Patrick, Auteur
Importance :	pp. 85-97
Langues :	Anglais (eng)
Index. décimale :	578 Histoire naturelle des organismes vivants
Résumé :	The general characteristics of the main salmon (Salmo salar L.) stocks in the Massif armoricain (Brittany and Lower Normandy), in the Loire-Allier and in the Adour-Gaves-Nive have been summarized. Due to the poor quality of the previous fishing statistics, [here is no clear picture of the historical evolution of the salmon stock. However, a dramatic decrease in the endemic range of Atlantic salmon in France can be shown since the mid-18th century and more particularly during the last 50 years. The lack of precise informations describing the size of the catches and the levels of exploitation at sea and in the estuaries make it impossible to estimate the impact that exploitation has led on the evolution of salmon stocks. The mean age of salmon in freshwater ranges from 1 to 1.5 years. The Loirc-Allicr basin is characterized by a relatively high proportion of large salmon (3 fish) in the rod catches. Fish native to Brittany and Lower-Normandy (Massif armoricain) have lower growth rates than those from the Loirc-Allier and Adour-Gavcs-Nive Basins. A greater proportion of the early grilse stocks (migration May-July) arc males than compared with fish running later. The sex ratio of the multi-sea-winter salmon is biased towards females.

Stock characteristics of Atlantic salmon (salmo salar) in France : a review [texte imprimé] / Prouzet, Patrick, Auteur . - [s.d.] . - pp. 85-97.
Langues : Anglais (eng)

Index. décimale :

578 Histoire naturelle des organismes vivants

Résumé :

The general characteristics of the main salmon (Salmo salar L.) stocks in the Massif armoricain (Brittany and Lower Normandy), in the Loire-Allier and in the Adour-Gaves-Nive have been summarized. Due to the poor quality of the previous fishing statistics, [here is no clear picture of the historical evolution of the salmon stock. However, a dramatic decrease in the endemic range of Atlantic salmon in France can be shown since the mid-18th century and more particularly during the last 50 years. The lack of precise informations describing the size of the catches and the levels of exploitation at sea and in the estuaries make it impossible to estimate the impact that exploitation has led on the evolution of salmon stocks. The mean age of salmon in freshwater ranges from 1 to 1.5 years. The Loirc-Allicr basin is characterized by a relatively high proportion of large salmon (3 fish) in the rod catches. Fish native to Brittany and Lower-Normandy (Massif armoricain) have lower growth rates than those from the Loirc-Allier and Adour-Gavcs-Nive Basins. A greater proportion of the early grilse stocks (migration May-July) arc males than compared with fish running later. The sex ratio of the multi-sea-winter salmon is biased towards females.