Report of the confirmation of foreign fresh water prawns Palaemonetes sinensis which closely resembled the Palaemon paucidens fresh water prawns in Miyagi Prefecture

Abstract

Distribution of freshwater shrimp was investigated in rivers, drains, and reservoirs from 2014 to 2015 in northern Miyagi Prefecture. We collected prawns which closely resembled the native freshwater prawn, Palaemon paucidens, from the two stations. As a result of morphological examination, it was identified to be the alien freshwater prawn, Palaemonetes sinensis. This was the first report that P. sinensis is established in Miyagi prefecture.