A team from the Doñana Biological Station (EBD) , center of the Higher Council for Scientific Research (CSIC) in Seville, has verified in a study that the American red crab ( Procambarus clarkii ) is the species of river or freshwater crab most widely
introduced in the world, currently being present in forty countries on four continents, despite the fact that it is originally native to the southern United States and northern Mexico. The research has recently been published in Reviews in Fish Biology and Fisheries. Fran Oficialdegui, EBD researcher and lead author of the study, explains that the research “has reviewed the centuries-old history of the invasion of the red crab in order to update the knowledge about its global distribution, its routes of

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introduction and the main routes of introduction that describe the movements of this species ”. Precisely, the research begins with the first introductions that occurred in the 20s of the last Armenia Phone Number List century to the present, thus completing a century of historical journey of the American red crab in each of the countries where it is currently established. Timeline of an invasion The team points out that the first introductions into non-native territories of the species occurred in California, the Hawaiian Islands, Japan and China in the 1920s. The objective was that these freshwater crabs would serve as food in breeding farms of the American bullfrog. Research adds that the growing interest of the American red crab in aquaculture and fisheries led to its introduction to

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Central America, Africa, and Europe between the late 1960s and early 1970s. Introductions accelerated in the late 20th century, when This species colonized much of the United States, Europe, and East Asia. Officialdegui warns that although this species is currently widely distributed, there are still areas where it has not arrived and that may be ideal for the establishment of the species, with the possibility of further expansion. Multiple long and short distance translocations, many of them not described in the scientific literature, have resulted in the current distribution of the American red crab, the most extensive for any freshwater crab in the world. “Except for two specific cases, in those countries where it has been introduced, it remains today, corroborating

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