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27 novembre 2018
- doi: 10.4000/books.irdeditions.25190
- 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
Fish Pisces Fauna Native fauna Native animals Beasts Wildlife Wild animals Animal kingdomCiter ce document
Christian Levêque et al., « Geographical distribution and affinities of African freshwater fishes », IRD Éditions, ID : 10.4000/books.irdeditions.25190
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Résumé
The present day composition and distribution of the fish fauna are the result of a long and complex history. They have been shaped by millions of years of changes in the global water cycle and the dynamics of freshwater systems. The dual processes of speciation and extinction have interacted with climatic and geological events that have isolated fish populations and/or provided opportunities for migrations and colonization of new habitats.The understanding of the zoogeography of African fish has prompted several surveys since the beginning of the century. Ideas have evolved substantially according to progress made in regional inventories and taxonomic information (see chapter General characteristics of ichthyological fauna). However, some fundamental questions remain challenging. What are the driving factors responsible for the colonization of the continent and the differentiation of the fish fauna in several provinces (biogeography)? What are the affinities of the African ichthyofauna with the other continental faunas? Ichthyologists try to answer these and many other puzzling questions with unflagging pleasure!