BIOLOGY 1M03 Lecture Notes - Lecture 2: Nile Perch, Lates, Paleozoic
12 Jul 2017
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Document Summary
Introduction of nile perch (lates noloticus) into lake. Victoria: nile perch was introduced from lake albert into the uganda portion of lake victoria in. 1950s and 1963, it was recorded in tanzania in 1964 and kenya in 1970. !1: explosive increase in nile perch population was observed in the 1980s. Consequences of introduction of nile perch: introduction of nile perch causes the largest mass extinction of contemporary vertebrates, within a decade, around 200 endemic species of haplochromine cichlids went extinct in lake victoria. Some species of cichlids ate algae; now algae is growing unchecked, because of the increased amount of algae, more plant material settles on the bottom of the lake before decomposing. Tools for studying history: the fossil record: a fossil is the physical trace left by an organism that lived in the past, the fossil record is the total collection of fossils that have been found throughout the world.
