Elephants are developing to not increase tons after long years of hunting and killing poachers, research says.
Almost 90 percent of African elephants in Gorongosa National Park in Mozambique were killed for their ivory to finance weapons in the civil war in the country.
But about a third of women – a generation born after the war that ended in 1992 – did not develop tics, according to recent data.
The elephant males are bigger and heavier, but because of growing poaching, hunters have begun to focus on women.
Joyce Poole, scientific director of the non-profit organization ElephantVoices, told National Geographic: "In time, the older population will get this really higher proportion of women without turtles."
Other countries have also seen a shift in the number of growing tusks of elephants.
In South Africa, 98 percent of 174 women in the Addo Elephant National Park allegedly did not build tusks in early 2000.
The drainage also caused the taper to fall in some heavily-fished areas, such as southern Kenya.
Scientists say elephants with this disability can change their behavior.
Kly are used for digging water or harvesting tree bark for food, so mammals can travel further to find survival.
But scientists say changes in the way elephants live would have greater implications for the ecosystems around them.
Ryan Long, a behavioral environmental scientist at the University of Idaho, told National Geographic: "Some or all of these changes in behavior could lead to changes in the distribution of elephants across the country, and these are the changes in a wide range that are most likely to have consequences for the rest ecosystem. "
The number of gluten-free elephants indicates the sustained effect that humans have on animals.
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