Friday, May 20News That Matters
Shadow

Tag: variation

Without genetic variation, asexual invasive species have to find other ways to adapt

Without genetic variation, asexual invasive species have to find other ways to adapt

Science
July 30 (UPI) -- Invasive all-female weevils pass along epigenetic changes to their offspring, helping them adapt to new environs, according to a new study. Across most of the animal kingdom, an organism's ability to adapt and evolve is largely dependent on genetic variation. Sufficient genetic diversity makes it more likely that favorable traits will emerge and proliferate as the fittest specimens populate subsequent generations. Some species, however, reproduce asexually, which means their genetic reservoir is limited. So how do they adapt to new environs? To find out, researchers collected specimens of two asexually reproducing, invasive weevil species, Naupactus cervinus and N. leucoloma, from Florida, California and Argentina. Despite sharing the exact same DNA, research...