WASHINGTON (AP)-Two-thirds of animal and plant population decline in genetic diversity, making it difficult to adapt to environmental changes, according to what it said. Published search Wednesday.
A long time before the extinction of some kind, the population becomes smaller and MoreReducing the number of his potential colleagues and thus genetic mixing. This leaves a more vulnerable kind of threats Like illness.
“The surprising trend was that we saw a genetic diversity that decreases even between” many types that are not in danger, “said co -author Catherine Grobber, a biologist at the University of Sydney.
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The researchers examined the data for 628 species studied between 1985 and 2019. The largest losses in the genetic variation in birds and mammals were seen.
Results Deployed In the Journal of Nature.
“When I have different genetic solutions, it is more able to deal with changes,” said David Noguis Bravo of the University of Copenhagen, who did not participate in the study.
If a new disease spreads through the population or climate change changes the precipitation in the summer, then some individuals will be better than others, partially due to their genes. The higher genetic diversity also means that there is a greater chance for the survival of species.
Conservation efforts to connect isolated groups – which mainly accommodate dating for certain types – can help maintain genetic diversity or even restore.
Florida’s leopards are a species threatened with extinction that steadily lost habitats to highways and urban extension. By the mid-nineties of the last century, the remaining large cats in southern Florida showed clear signs of relatives’ marriage-with stained tails and low sperm meters in males.
Biologists brought eight pants from Texas to Florida. Twenty years later, the number of leopards in Florida in the wild grew in a large way and increased the genetic diversity.
“The isolated population is suffering,” said Stewart Pim, an environmentalist at Duke University, who was not part “The solution is to re -connect them.”
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