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Difference in habitat use between the two related goby species of Gymnogobius opperiens and Gymnogobius urotaenia: a case study in the Shubuto River System, Hokkaido, Japan
Investigation of the Shubuto River System revealed that watercourse distance from the sea had a significant influence on the abundances of both G. opperiens and G. urotaenia but in different ways, and the differential habitat use between the two species may be related to the differences in their population sizes and morphologies. Expand
Temporal dynamics of fluvial fish community caused by marine amphidromous species in the Shubuto River, southwestern Hokkaido, Japan
We investigated the fluvial fish communities at 16 sites that cover the entire Shubuto River in northern Japan in July and September 2010. A total of 5,552.9 g of biomass and 980 individuals wereExpand
Dispersal of Larvae of Margaritifera Laevis by Its Host Fish
The results suggest that glochidial dispersal via host fish is important for local recruitment and upstream dispersal, but dispersal to tributaries may be a source of mortality for M. laevis. Expand
Metapopulation stability in branching river networks
Significance Metapopulation stability is a critical ecological property. Although ecosystem size has been considered as a fundamental driver of metapopulation stability, current theories developed inExpand
Asymmetric dispersal structures a riverine metapopulation of the freshwater pearl mussel Margaritifera laevis
This work hypothesized that water-mediated dispersal would overwhelm upstream dispersal via host fish, and therefore, that upstream subpopulations play a critical role as immigrant sources, and examined the effects of both up- and downstream immigrant sources on the size of target subpopulation in the Shubuto River system, Hokkaido, Japan. Expand
Illustrated checklist of fishes from the Shubuto River System, southwestern Hokkaido, Japan
A checklist of fish fauna, comprising 40 species representing 15 families and 9 orders, was compiled from field, museum, and literature surveys of the Shubuto River System, southwestern Hokkaido,Expand
A delayed effect of the aquatic parasite Margaritifera laevis on the growth of the salmonid host fish Oncorhynchus masou masou
The results suggest that examining only instantaneous effects of glochidial infections of Margaritifera laevis on its salmonid host Oncorhynchus masou masou may provide misleading conclusions about mussel–host relationships. Expand
Predicting the ecological impacts of large‐dam removals on a river network based on habitat‐network structure and flow regimes
This study devised a scheme that integrates changes in flow regimes and habitat network structure into a basin-scale impact assessment of removal of large dams and applied it to the Nagara-Ibi Basin, Japan, and revealed that an increase in flow variability associated with dam removal projected both positive and negative effects on basin- scale habitat availability. Expand
A “parasite-tag” approach reveals long-distance dispersal of the riverine mussel Margaritifera laevis by its host fish
A “parasite-tag” approach to the riverine mussel Margaritifera laevis and its obligate host fish provides highly needed evidence: host fish can be effective in mediating long-distance dispersal of a riverine Mussel species. Expand