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27 novembre 2018
- doi: 10.4000/books.irdeditions.25259
- isbn: 9789492669100
- eisbn: 9782709924016
https://www.openedition.org/12554 , info:eu-repo/semantics/openAccess
Mots-clés
écologie biodiversité exploitation des ressources naturelles écosystème facteur anthropique évolution pisciculture eau continentale aquaculture faune ichtyologique hydrobiologie milieu lacustre biogéographie aquaculture biodiversity biogeography water ecology ecosystem evolution ressources exploitation anthropogenic factor hydrobiology Environmental Studies NAT011000 RNKSujets proches
Speciation (Biology)Citer ce document
Didier Paugy et al., « Species introductions », IRD Éditions, ID : 10.4000/books.irdeditions.25259
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Résumé
Since antiquity, fish have been introduced and translocated between and within continents. This practice was greatly developed during the 20th century with the primary aim of improving fishing production and fish farming development. Fish have been introduced on every continent, but this chapter focuses only on Africa.While species introductions have been encouraged more or less throughout the world in order to improve aquaculture production, they have become controversial in recent decades among scientists and aquatic ecosystem managers. The introduction of new species sometimes has enormous consequences on native fish populations. Some believe that humans should not play with fire and that any introduction is causing irreversible damage to native fauna. On the contrary, others think that nature has not necessarily gone in the right direction, and that the introduction of species to improve fisheries production is justified in a number of cases. This debate is far from resolved and should prompt us to adopt a precautionary approach.