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The elimination of around 200 species of...

The elimination of around 200 species of cichlid fish from Lake Victoria of East Africa is an example of

A

Co-extinctions

B

Over--exploitations

C

Alien species invasions

D

Habitat loss and fragmentatin

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The correct Answer is:
To solve the question regarding the elimination of around 200 species of cichlid fish from Lake Victoria of East Africa, we need to analyze the situation and the options provided. ### Step-by-Step Solution: 1. **Understand the Context**: - The question refers to the extinction of approximately 200 species of cichlid fish in Lake Victoria. This is a significant ecological event that has implications for biodiversity. 2. **Identify the Cause of Extinction**: - The introduction of the Nile perch, a non-native species, into Lake Victoria is a key factor. The Nile perch is known for being a voracious predator, which has led to the decline of native fish species, including the cichlids. 3. **Evaluate the Options**: - **Option A: Coextinctions** - This refers to the extinction of one species leading to the extinction of another that is dependent on it. This does not apply here as the cichlid fish were not dependent on a single species that went extinct. - **Option B: Overexploitation** - This involves the unsustainable use of resources leading to a species' decline. While the Nile perch may overexploit resources, this option does not specifically address the introduction of a non-native species. - **Option C: Alien Species Invasions** - This refers to the introduction of a non-native species that disrupts the existing ecosystem. The Nile perch fits this description as it invaded Lake Victoria and led to the decline of native cichlid species. - **Option D: Habitat Loss and Fragmentation** - This involves the destruction of an organism's habitat, which is not the primary cause in this scenario. 4. **Conclusion**: - Based on the analysis, the best answer is **Option C: Alien Species Invasions**. The introduction of the Nile perch, which is an alien species, has directly led to the extinction of the native cichlid fish. ### Final Answer: **C: Alien Species Invasions** ---
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