Hiroshima University scientists have identified a new species of parasite infecting an invasive freshwater fish on the subtropical island of Okinawa, Japan. The results are part of a project to find parasites that have arrived in Japan with their non-native hosts and understand the role of parasites in natural ecosystems. Tracking parasites can be one scientific method to monitor ecosystem health and attempt to conserve biodiversity.
The project began in 2012 when one of the researchers was trying to fill some of his free time. Masato Nitta, now a second-year PhD student at Hiroshima University, recognized some invasive fish in the stream that runs through the campus of the University of the Ryukyus in Okinawa, Japan, the university that hosted his research team during their field studies.
"It was just for play, not for official study. I saw two of the invasive catfish and I decided to try to catch them and check what parasites they had because I was curious. When I put the parasites under the microscope, they looked a little bit strange. read more
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