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- Video Presentation Project BIO 182 LAB
By: Joshua Anyaji (ASU ID-1222778869)
Works Cited:
- Ivory poaching and the rapid evolution of ... - science.org. https://www.science.org/doi/10.1126/science.abe7389 (accessed Apr 25, 2022).
- Larson, C. Why no tusks? poaching tips scales of Elephant Evolution. https://apnews.com/article/science-africa-environment-and-nature-elephants-mozambique-048e181c6dadc591b1f43c6e963f0f0e (accessed Apr 24, 2022).
Title- "Why no tusks? Poaching tips scales of elephant evolution"
Summary- This article is about how elephants are rapidly evolving to have no tusks. This rapid evolution is credited to the environment they are in as they are subject to high levels of poaching. The environmental stress and pressures are so much that they are evolving fast in order to combat the environmental stress.
Primary Literature- https://www.science.org/doi/10.1126/science.abe7389
- "Ivory poaching and the rapid evolution of tusklessness in African elephants"
- Researd paper by Shane C. Campbell- Staton, Brian J. Arnold, Dominique Goncalves, Petter Granli, Joyce Poole, Ryan A. Long, Robert M. Pringle
- Research paper done by those 7 contributors in 2021
- Talks about human advancements in poaching
- the pressures are small scale so they can be considered selective drivers
- increased poaching done by armed forces during Mozambican civil war (1977-1992)
- elephant populations declined by 90% during this time
-post war and during population recover, female elephants were born tuskless
This news article heavily connects to ideas we have learned throughout Bio 182. The news article covers topics like evolution, natural selection, parasitic relationships, and environmental pressures. The information presented in the news sources is relevant and accurate and also directly related to the topics we have been exposed to throughout this course
-increase in poaching (environmental pressure) leads to decrease in elephants with tusk and a lower survivability of elephants without tusk, therefore natural selection favors tusk-less elephants