Reviews in Fish Biology and Fisheries

, Volume 20, Issue 4, pp 557–570

The origins and persistence of anadromy in brook charr

  • R. Allen Curry
  • Louis Bernatchez
  • Fred WhoriskeyJr.
  • Céline Audet


We synthesized the results of a coordinated study examining the spatial and temporal movements, genetic structure, and physiological characteristics of sympatric populations of resident and sea-run brook charr across eastern Canada. Our goal was to critically evaluate three working hypotheses that may explain anadromous behaviour in brook charr: (1) resident and anadromous forms have different phylogenic origins; (2) anadromy emerges from freshwater residents; and (3) freshwater residency emerges from anadromous individuals. Our synthesis is consistent with the conclusion that freshwater residency emerging from anadromous individuals is most probable. Overall, anadromy in brook charr is poorly developed and the tactic of sea-running may be described as partial, facultative anadromy if the species must be described in terms of anadromy. The sea-run tactic most probably results from the species’ propensity to move and disperse, the over-production of juveniles, an archetypical physiological ability to tolerate saline environments, and the persistence of critical habitats. When the spatial and temporal physical environments permit, the anadromous behaviour is expressed. The tactic creates an apparent fitness advantages related to growth, but it is not necessarily the only evolutionary stable strategy for a river. Most populations with sea-run forms are declining and successful conservation of sea-run forms will depend on managing harvests and more importantly, protection of the temporally and spatially complexity of critical habitats.


Anadromy Strategy Tactics Salvelinus fontinalis Salmonids Critical habitats 

Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • R. Allen Curry
    • 1
  • Louis Bernatchez
    • 2
  • Fred WhoriskeyJr.
    • 3
  • Céline Audet
    • 4
  1. 1.Canadian Rivers InstituteUniversity of New BrunswickFrederictonCanada
  2. 2.Institut de Biologie Intégrative et des Systèmes (IBIS)Université LavalQuebec CityCanada
  3. 3.Atlantic Salmon FederationSt. Andrew’sCanada
  4. 4.Institut des Sciences de la mer de RimouskiUniversité du Québec à RimouskiRimouskiCanada

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