Contrasting Life History Characteristics Between Riverine and Lacustrine Anadromous Arctic Char (<i>Salvelinus alpinus</i>) in the Western Canadian Arctic.

ABSTRACT: Freshwater habitat characteristics are known to affect life history traits of migratory salmonids. Although the life cycle of the anadromous form of Arctic char (Salvelinus alpinus) is typically associated with lakes, there is a small number of anadromous populations in North America that spawn, rear, and overwinter exclusively in rivers. The life history traits of these relatively understudied populations and how they differ from lacustrine Arctic char are poorly documented. We characterized life history tradeoffs expressed by anadromous Arctic char originating from a riverine (Hornaday River) and a relatively nearby lacustrine system (Tatik Lake of the Kuujjua River) in the western Canadian Arctic using a 10-year dataset. The riverine population attained smaller average size (600 

SUBMITTER: Gallagher CP 

PROVIDER: S-EPMC12717139 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature