In the animal world, the selection of certain traits has long been the biggest driver in how some sexual species will evolve. But as our planet warms to unthinkable temperatures, some are forced to rethink their dating habits.
Animals and humans are shifting how they select mates as greenhouse emissions raise global temperatures and warm our world.
Those adjustments come in many forms. A lot of animals are giving up attractive traits, while others are keeping those characteristics and finding different ways to conserve energy. Some animals are adjusting by altogether shifting the attributes they value in a mate. And although the research is very limited, there is even some evidence suggesting that human mating habits are changing in a warming world too.to keep up with changes in the climate.
Evolutionary biologists say those eye-catching displays are usually indicators of good genes, which females want to pass along to their offspring. In some animal communities, such as lion prides, the most preferred males will mate with many females, and those traits will be passed down the most often.
“There’s definitely evidence that as our climate warms and as our environment becomes more stressful in a bunch of different ways, it’s becoming increasingly difficult for these organisms to produce these traits that are really important for attracting mates and intimidating reproductive rivals,” Moore said., Moore and his colleagues found that males have now opted for less pigmentation in recent decades. During Earth’s hottest years, males displayed the least amount of color.
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