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50 Years Ago, a Rancher Released Red Crayfish into a Few Small Ponds; Now Spain Has an Invasive Species Issue that May Never Go Away

Add Yahoo as a preferred source to see more of our stories on Google. A photo of a red American crayfish. Strict regulations now allow for crayfish harvesting while aiming to prevent further ...
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Ohio residents spot invasive crayfish on patios, but a self-cloning cousin may be the bigger threat

Add Yahoo as a preferred source to see more of our stories on Google. Photo Credit: iStock Central Ohio might seem like a strange place to encounter crustaceans, but Columbus residents have now ...
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Two tons of American red crayfish were unleashed into a Spanish river in 1974: 52 years later, the invasion is at a point of no return

In the spring of 1974, the Guadalquivir marshlands were a balanced ecosystem. No one in the towns of La Puebla del Río or Isla Mayor could have imagined that the decision of a single man would ...
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Ohio residents spot invasive crayfish on patios, but a self-cloning cousin may be the bigger threat

Central Ohio might seem like a strange place to encounter crustaceans, but Columbus residents have now reported several sightings of the invasive red swamp crayfish near bodies of water. Several ...
AOL

50 Years Ago, a Rancher Released Red Crayfish into a Few Small Ponds; Now Spain Has an Invasive Species Issue that May Never Go Away

More than 50 years after Spain imported American crayfish, the species has become one of the country’s largest exports — and has permanently transformed its ecosystems. It all started in 1974 when ...