Fish Conservation and
Management
CONS 486Hatchery Issues
More fish in the wild is good, right?
Chapter 8 Ross
Major theme: Linking science to conservation & management
?????PhysiologyBehaviourPopulation ecologyEcosystem ecologyHabitat data (limnology, oceanography)?Life history?Fisheries exploitation data?Applied life history data?Human dimensions: socio-economic dataBasic scienceApplied science?Protecting populations & habitats?Restoring populations & habitatsConservationManagement?Harvest regulations?Managing fisheries & habitatsHatcheries: Topics
Purposes of hatcheries:
?introducenew species into either existing or new aquatic systems for fisheries purposes (as a target species or forage)
?supplementan existing population for fisheries purposes?re-establish(restore) native fishes that were eliminated or supplement fishes that are threatened with extinction
Hatcheries: types
?Production hatcheries: enhance or create fish production for commercial and recreational fisheries
-Release fry or juveniles into natural environments
?Conservation hatcheries: production maintains self-sustainable local wild stock
-Supplement an existing threatened population-Re-establish extirpated native fishes
?Many hatcheries serve the dual roles of conservationand production
Hatcheries
鱼类养护和管理 (15)
