A5031148264- Fish Ecology and Management Studies
- Genetic diversity and population structure
- Fish Biology and Ecology Studies
- Fluid Dynamics and Turbulent Flows
- Hydrology and Sediment Transport Processes
- Identification and Quantification in Food
- Hydraulic flow and structures
- Environmental DNA in Biodiversity Studies
- Fish biology, ecology, and behavior
- Genetic and phenotypic traits in livestock
- Ichthyology and Marine Biology
- Heat Transfer Mechanisms
- Marine and fisheries research
- Aquatic Invertebrate Ecology and Behavior
- Wildlife Ecology and Conservation
- Parasite Biology and Host Interactions
- Hydrology and Watershed Management Studies
- Particle Dynamics in Fluid Flows
- Wind and Air Flow Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Microbial Community Ecology and Physiology
- Fluid Dynamics and Vibration Analysis
- Isotope Analysis in Ecology
- Species Distribution and Climate Change
- Plant Water Relations and Carbon Dynamics
Kyoto University
2016-2025
National Fisheries University
2022
National Institute of Technology, Tokuyama College
2022
University of Shimane
2019
Tokuyama (Japan)
1991-2015
Nara Women's University
2001-2011
Toshiba (Japan)
2010
The University of Tokyo
1999-2007
Nippon Suisan Kaisha (Japan)
2007
Fukui Prefectural University
1999-2005
Abstract Freshwater ecosystems are highly biodiverse 1 and important for livelihoods economic development 2 , but under substantial stress 3 . To date, comprehensive global assessments of extinction risk have not included any speciose groups primarily living in freshwaters. Consequently, data from predominantly terrestrial tetrapods 4,5 used to guide environmental policy 6 conservation prioritization 7 whereas recent proposals target setting freshwaters use abiotic factors 8–13 However,...
Nematomorph parasites manipulate crickets to enter streams where the reproduce. These manipulated become a substantial food subsidy for stream fishes. We used field experiment investigate how this affects community and ecosystem function. When were available, predatory fish ate fewer benthic invertebrates. The resulting release of invertebrate from predation indirectly decreased biomass algae slightly increased leaf break-down rate. This is first experimental demonstration that host...
Parasites are ubiquitous in natural systems and ecosystem-level effects should be proportional to the amount of biomass or energy flow altered by parasites. Here we quantified extent which a manipulative parasite through forest-stream ecosystem. In Japanese headwater stream, camel crickets grasshoppers (Orthoptera) were 20 times more likely enter stream if infected nematomorph (Gordionus spp.), corroborating evidence that nematomorphs manipulate their hosts seek water where parasites emerge...
The construction of linkage maps is a first step in exploring the genetic basis for adaptive phenotypic divergence closely related species by quantitative trait locus (QTL) analysis. Linkage are also useful comparative genomics non-model organisms. Advances technologies make it more feasible than ever to study genetics adaptation natural populations. Restriction-site associated DNA (RAD) sequencing next-generation sequencers facilitates development many markers and genotyping. We aimed...
Both hydropower dams and global warming pose threats to freshwater fish diversity. While the extent of may be reduced by a shift towards energy generation large in order reduce fossil-fuel use, such profoundly modify riverine habitats. Furthermore, posed will interact: for example, constrain range adjustments fishes that might compensate temperatures. Evaluation their combined or synergistic effects is thus essential adequate assessment consequences planned water-resource developments. We...
Abstract To elucidate the origins of endemic fish Lake Biwa, an ancient lake in Japan, and role diversification freshwater western we established a molecular phylogenetic framework with absolute time scale inferred historical demography large set species around lake. We used mt DNA sequences obtained from total 190 specimens, including 11 Biwa their related species, for analyses divergence estimations 2319 specimens 42 (including 14 endemics) occurring population genetic analyses....
Anuran larvae can change their coloration and morphology to avoid predation. Particularly, some tadpoles in the genus Dryophytes Americas develop deep tail fins bright orange response predators such as dragonfly nymphs. These conspicuous tails are hypothesized attract predator attacks, protecting vital body parts from fatal injuries. However, it remains unclear whether extent of induced phenotypic changes differs between various with distinct feeding patterns habitats. To explore this, we...
The white-spotted charr (Salvelinus leucomaenis) is a coldwater-adapted fish distributed in far-eastern Asia. To assess phylogeographic patterns of this species over most its range the Japanese archipelago and Sakhalin Island, Russia, we examined nucleotide sequences mitochondrial DNA (mtDNA) cytochrome b region (557 bp) 141 individuals from 50 populations. A total 33 (5.5%) positions were polymorphic defined 29 haplotypes. Phylogenetic analysis assigned observed haplotypes to four main...
Phylogeography is an integrative field of science linking micro- and macro-evolutionary processes, contributing to the inference vicariance, dispersal, speciation, other population-level processes. Phylogeographic surveys usually require considerable effort time obtain numerous samples from many geographical sites covering distribution range target species; this associated high cost limits their application. Recently, environmental DNA (eDNA) analysis has been useful not only for detecting...
Cichlid fishes in Lake Tanganyika exhibit remarkable diversity their feeding habits. Among them, seven species the genus Perissodus are known for unique habit of scale eating with specialized morphology and behaviour. Although origin scale-eating has long been questioned, its evolutionary process is still unknown. In present study, we conducted interspecific phylogenetic analyses all nine tribe Perissodini (seven two Haplotaxodon species) using amplified fragment length polymorphism (AFLP)...
Inle (Inlay) Lake, an ancient lake of Southeast Asia, is located at the eastern part Myanmar, surrounded by Shan Mountains. Detailed information on fish fauna in and around has long been unknown, although its outstanding endemism was reported a century ago.Based specimens collected from markets, rivers, swamps, ponds ditches Lake as well itself 2014 to 2016, we recorded total 948 occurrence data (2120 individuals), belonging 10 orders, 19 families, 39 genera 49 species. Amongst them, 13...
Summary Resource subsidies often weaken trophic cascades in recipient communities via consumers' functional response to the subsidies. Consumer populations are commonly stage‐structured and may respond differently among stages yet less is known about how this might impact subsidy effects on strength of systems. We show here, using a large‐scale field experiment, that stage structure consumer would dampen terrestrial invertebrate cascade streams. When high input rate invertebrates was...
'Hariyo' comprise the southernmost freshwater populations of threespine stickleback, Gasterosteus aculeatus species complex, distributed in central Honshu, Japan. Two geographic groups (Gifu and Shiga) 'hariyo' have been recognized as differing from each other some morphological ecological features. In order to elucidate genetic characteristics phylogenetic position these populations, partial sequences mitochondrial cytochrome b gene were compared 123 specimens 10 eight anadromous...
Divergent natural selection is thought to play a vital role in speciation, but clear, measurable examples from nature are still few. Among the many possible sources of divergent selection, predation pressure may be important because predators ubiquitous food webs. Here, we show evidence for Lake Tanganyika cichlid, Telmatochromis temporalis, which uses burrows under stones or empty snail shells as shelters. This species contains normal and dwarf morphs at several localities. The morph...