caa a22 4500 445893230 CHVBK 20180317145623.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10750-011-0790-5 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0790-5 Factors affecting the local occurrence of the near-threatened bitterling ( Tanakia lanceolata ) in agricultural canal networks: strong attachment to its potential host mussels [Elektronische Daten] [Akira Terui, Shin-ichiro Matsuzaki, Kohji Kodama, Masamitsu Tada, Izumi Washitani] 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. Springer Science+Business Media B.V., 2011 Acheilognathinae nationallicence Alien species nationallicence Bitterling nationallicence Connectivity nationallicence Freshwater mussel nationallicence Symbiosis nationallicence Terui Akira Department of Ecosystem Studies, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, 113-8657, Tokyo, Japan aut Matsuzaki Shin-ichiro National Institute for Environmental Studies, 305-8506, Tsukuba-shi, Ibaraki, Japan aut Kodama Kohji Fukui Prefectural Fisheries Experimental Station, Urazoko, 914-0843, Tsuruga-shi, Fukui, Japan aut Tada Masamitsu Fukui Prefectural Coastal Nature Center, 18-2 Sekumi, 919-1464, Mikatakaminaka-gun, Fukui, Japan aut Washitani Izumi Department of Ecosystem Studies, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, 113-8657, Tokyo, Japan aut Hydrobiologia Springer Netherlands 675/1(2011-10-01), 19-28 0018-8158 675:1<19 2011 675 10750 https://doi.org/10.1007/s10750-011-0790-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0790-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Terui Akira Department of Ecosystem Studies, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, 113-8657, Tokyo, Japan aut NATIONALLICENCE 700 1- Matsuzaki Shin-ichiro National Institute for Environmental Studies, 305-8506, Tsukuba-shi, Ibaraki, Japan aut NATIONALLICENCE 700 1- Kodama Kohji Fukui Prefectural Fisheries Experimental Station, Urazoko, 914-0843, Tsuruga-shi, Fukui, Japan aut NATIONALLICENCE 700 1- Tada Masamitsu Fukui Prefectural Coastal Nature Center, 18-2 Sekumi, 919-1464, Mikatakaminaka-gun, Fukui, Japan aut NATIONALLICENCE 700 1- Washitani Izumi Department of Ecosystem Studies, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, 113-8657, Tokyo, Japan aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 675/1(2011-10-01), 19-28 0018-8158 675:1<19 2011 675 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer