Gefahren für die endemische Fischfauna durch Einbürgerungsversuche und Akklimatisation von Fremdfischen am Beispiel des Titicaca-Sees (Peru/Bolivien) und des Lanao-Sees (Mindanao/Philippinen)

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Summary

The contribution deals with the problems which arise from uncontrolled introduction of fish-species in old lakes with a well-balanced endemic fauna. The negative consequences are shown in discussing the ichthyological situation of Lake Titicaca/Peru, Bolivia and Lake Lanao/Mindanao (Philippines). Therefore the author puts forward two postulations in order to avoid the extinction of endemic species:

1.	autecological studies of the native fauna for finding out the best fitting species that should be introduced and
2.	use of cultured strains only in avoidance of introduction of parasites.