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New parasite could be late summer beach pest
Date:6/9/2010

aven't seen the extreme numbers of the species in Swedish waters that are present on the American east coast. The anemone larvae also peak in September, after the high season for Swedish bathers."

Not entirely bad

Erik Selander and his colleagues recorded the parasite during two separate surveys in 2007 and 2008. In the latter, parasite numbers had increased to 40 per of the comb jellyfish numbers. From an ecological point of view, the finding is therefore not an entirely bad thing.

Can suppress invading jellyfish

"The explosive increase in numbers of comb jellyfish here and in the Black Sea, for example, is thought to be down to the fact that the jellyfish has fewer natural predators here than in its natural environment," says Selander. "It is therefore particularly exciting to see what will happen now that a natural predator has shown up. Given that there are so many parasites, it is hoped that they can help suppress the invasion of the jellyfish somewhat, as it seems to do on the other side of the Atlantic."


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Contact: Erik Selander
46-730-226-208
University of Gothenburg
Source:Eurekalert  

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