Lake Titicaca is the only recognized South American ancient lake and probably of Pliocene origin. The lake, characterized by a bipartite basin, is well known for its endemic taxa belonging to the Amphipoda, Mollusca, and Ostracoda, as well as for its economically important fish fauna.
Age (my) |
2–3 |
Biogeographical area |
Andean-Patagonean subregion |
Surface area (km2) |
8,562 |
Altitude (m asl) |
3,810 |
Maximum depth (m) |
281 |
Mean depth (m) |
107 |
Catchment area (km2) |
56,270 |
Number of species* |
533 |
Number of endemic species* |
61 |
Key endemic taxa |
Amphipoda, Gastropoda, Ostracoda |
Suggested readings:
*from Martens, 1997
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(click to enlarge)
Reed belt in Lake Titicaca (photograph: O. Kroll).
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Hyalella sp. of Lake Titicaca with characteristic dorsal spines (photograph: T. Hauffe).
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Heleobia mirum (Haas, 1957), a member of the Heleobia species-flock. This flock shows remarkable character states such as keeled or scalariform shells and spiraliform operculae (photograph: O. Kroll).
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