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Animal Bioresource in Japan

.: Home > Animal Bioresource in Japan > 2012 > Volume 59 Number 2 > Masaki Nishio, Soliman Taha, Yuji Yamazaki

Occurrence and spawning locations of the Itasenpara bitterling (Acheilognathus longipinnis) in the Moo River, Toyama, Japan

Masaki Nishio, Soliman Taha, Yuji Yamazaki
Board of Education (masaki.nishio@city.himi.lg.jp) Himi City, 4–9 Honmachi, Himi, Toyama 935–0016, Japan
Abstract :

To clarify the distribution during spawning and spawning habitat of Itasenpara bitterling (Acheilognathus longipinnis), one of the most endangered freshwater fish species in Japan, the habitats of mature individuals and freshwater mussels (Unio douglasiae nipponensis) were investigated in the Moo River (Himi City, Toyama Prefecture, Japan) in relation to environmental factors during the fall and winter seasons in 2010. Mussel density-influenced sex ratios of bitterling varied in the study area, males remaining in areas of high mussel density during spawning, while females frequented deeper feeding grounds until their eggs had matured.

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Date Deposited : 25 Feb 2015 11:38

Last Modified : 25 Feb 2015 11:38

Official URL: http://www.jstage.jst.go.jp

Volume 59, Number 2, - 2012 , ISSN 111–124

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