zoo lecture 20 3-31 Lake Tanginyaka

zoo lecture 20 3-31 Lake Tanginyaka - Zoology 510 Notes...

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Zoology 510 Notes Lecture 20 31 March 2011 Lake Tanganyika I. General Facts a. Rift lake, 10-12 million years old b. 650 km by 50 km surface c. Up to 1.47 km deep d. 18% of world’s liquid freshwater e. 300+ fish species, 95% of which are endemic f. Species flocks of cichlids, catfishes, Nile perches g. Cichlids dominates II. Depth a. Light only really hits the shore because the lake is so deep III. Substrate a. Patches of rock, sand, and mixed rock and sand b. Fish that live in the rock environment communities are more diverse than the sandy areas IV. Fish communities a. High alpha diversity a.i. 41 to 47 species/site visible b. High beta diversity b.i. Only 23 of 41 species shared c. All the color morphs matter. The females are picky V. Food web a. A whole lot of species and food sources a.i. Some eat only 1 species (highly specialized) a.ii. Some are just general feeders b. Every food resource is used c. Many interdependencies based on some behavior and anatomy.
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This note was uploaded on 12/11/2011 for the course ZOO 510 taught by Professor Staff during the Spring '08 term at University of Wisconsin Colleges Online.

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zoo lecture 20 3-31 Lake Tanginyaka - Zoology 510 Notes...

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