This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Sunday, 24 October 2021
Ivory Poaching and Natural Selection
Ivory poachers kill African elelphants for their tusks. A tuskless elephant would be of no interest to them. Mass poaching consequently appears to be driving the current evolution of the elephant (https://www.theguardian.com/environment/2021/oct/21/ivory-poaching-evolution-tuskless-elephants-study). A previously rare genetic mutation in female elephant in Garangosa Park in Mozambique, is spreading. The mutation results in the elephants being born without tusks. Not being targeted by poachers, seems to override any potential benefit derived from having tusks (in sexual selection, defence against predators and/or foraging). No tusks: no poachers!
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