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Bibliographie de l'Institut Maurice-Lamontagne

Poissons / Salvelinus alpinus / Omble chevalier

OLIVEIRA RIBEIRO, C.A., E. PELLETIER, W.C. PFEIFFER, C. ROULEAU, 2000. Comparative uptake, bioaccumulation, and gill damages of inorganic mercury in tropical and Nordic freshwater fish. Environ. Res. , 83(3): 286-292.

OLIVEIRA RIBEIRO, C.A., C. ROULEAU, É. PELLETIER, C. AUDET, H. TJALVE, 1999. Distribution kinetics of dietary methylmercury in the Arctic charr (Salvelinus alpinus). Environ. Sci. Technol., 33: 902-907.

DESDEVISES, Y., J.R. ARTHUR, J. PELLERIN-MASSICOTTE, 1998. Parasites of anadromous Arctic char (Salvelinus alpinus L.) from two sites in Ungava Bay (Quebec, Canada). J. Helminthol. Soc. Wash., 65: 87-90.

DUTIL, J.-D., 1986. Energetic constraints and spawning interval in the anadromous Arctic charr (Salvelinus alpinus). Copeia, 1986: 945-955 .

[Résumé disponible seulement en anglais]
Non-reproductive anadromous Arctic charr of Nauyuk Lake lost 30 % of their fall reserves of energy by the following spring. They restored their reserves of energy through a two month summer in the sea. Spawners became much more depleted. Production of gonads and starvation in the lake prior to spawning were such that postspawners migrating to sea in spring contained as much as 46 % less energy than non-reproductive charrs. Postspawners required more than one summer to replenish their depleted reserves. These results provide an example of the phenotypic plasticity of the life history characteristics of arctic charr and show that production of gonads and related changes in the migratory cycle prevent individual charrs from spawning 2 yr in succession. Length-related energy constraints possibly contribute to shaping the structure of the population and lead to senescence in charrs >90cm . The role of a threshold body condition as a release mechanism in the processes of maturation is discussed.