Nation ‘No effect’: Even record freeze couldn’t eradicate Texas’ toughest invasive species, experts say February 27, 2021 Heather Osbourne, Austin American-Statesman Comments Off on ‘No effect’: Even record freeze couldn’t eradicate Texas’ toughest invasive species, experts say Zebra mussels, which are small but prolific invasive mollusks, managed to survive Texas' freezing temperatures and record snowfall.