Sessile Organisms
Online ISSN : 1883-4701
Print ISSN : 1342-4181
ISSN-L : 1342-4181
Original articles
Spatial distribution of an exotic mussel, Limnoperna fortunei, in Lake Biwa and connected waters in western Japan
Taeko KimuraAkihiro InoueShoichi KimuraTatsuya Sato
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2011 Volume 28 Issue 1 Pages 9-18

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Abstract
The spatial distribution and abundance of the exotic mussel Limnoperna fortunei was investigated along the shore of Lake Biwa and in connected waterways from November, 2008, to November, 2009. The mussel was commonly and abundantly found along the lake's shore except for the western side of Northern Lake Biwa, and it was first recorded for the first time in neighboring Lake Yogo, as well as at Chikubu Island and Okinoshiraishi Island within Northern Lake Biwa. The highest density of the mussel was found in Southern Lake Biwa and also in Lake Yogo, places where high concentrations of chlorophyll-a occur for much of the year. The mussel was found in the Seta, Uji, and Yodo Rivers comprising the outflow from Southern Lake Biwa, and also in their tributary the Kizu River. Seeds of mussel populations in the Kizu River may be supplied from the Takayama Dam upstream.
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© 2011 Sessile Organisms Society of Japan
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