NDLI: Factors affecting the local occurrence of the near-threatened bitterling (Tanakia lanceolata) in agricultural canal networks: strong attachment to its potential host mussels

Content Provider	Springer Nature Link
Author	Terui, Akira Matsuzaki, Shin ichiro S. Kodama, Kohji Tada, Masamitsu Washitani, Izumi
Copyright Year	2011
Abstract	Ecologically specialized species may be more susceptible to anthropogenic impacts than generalist species. Japan’s native bitterlings (subfamily Acheilognathinae), which are specialized to spawn on the gills of certain freshwater mussels, have been declining dramatically during the last few decades. To identify factors affecting the local occurrence of the threatened bitterling species Tanakia lanceolata, we measured its presence and absence, along with several environmental factors, at 68 sites within agricultural canal networks in the Lake Mikata basin, Fukui Prefecture, Japan. Based on the theoretical information approach of Akaike’s information criterion, generalized linear mixed models were constructed. These revealed that the species’ occurrence is strongly affected by five major factors: the presence of freshwater mussels Anodonta sp., water depth, floating plants coverage, the presence of bullfrogs, and submerged plants coverage. The probability of the presence of T. lanceolata was higher at shallower sites with lower floating plants coverage, located within channels containing mussel beds. These results suggest that mussel-containing channel systems are high-priority conservation zones for T. lanceolata.
Starting Page	19
Ending Page	28
Page Count	10
File Format	PDF
ISSN	00188158
Journal	Hydrobiologia
Volume Number	675
Issue Number	1
e-ISSN	15735117
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-06-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Acheilognathinae Alien species Bitterling Connectivity Freshwater mussel Symbiosis Zoology Freshwater & Marine Ecology Ecology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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