Yuichi KanoKyushu University | Kyudai
Yuichi Kano
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68
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Introduction
Publications
Publications (68)
This study presents the complete mitochondrial genome sequence of Gammarus nipponensis, a freshwater crustacean found in the western regions of Honshu, Shikoku and Kyushu in Japan. The entire genome is 16,429 bp in length, encoding a standard set of 13 protein-coding genes, two ribosomal RNA genes and 22 transfer RNA genes, as well as the putative...
River estuaries are influenced by terrestrial and marine areas, and have a unique environment that is constantly fluctuating. They are also important habitats for biodiversity conservation. Tanegashima Island is significantly influenced by the Kuroshio Current. Although nearby Yakushima Island has been recognized as a World Natural Heritage site an...
Inle Lake is an ancient lake in Myanmar, which is an important area with unique and diverse fauna. Its ichthyofauna is believed to have formed non-radiatively, but the historical processes are poorly understood. To elucidate the mechanisms that shape species diversity in this moderately isolated biogeographical ‘island’, this study focused on a typ...
Geothelphusa dehaani , a freshwater crab species endemic to Japan, has the largest distribution range amongst the 19 known species in the country. Due to its low dispersal capability and restricted habitat to freshwater, it serves as an excellent model for understanding gene flow between geographically isolated populations. In this study, we analys...
Morphological data of life forms are fundamental for documenting and understanding biodiversity. I developed a photogrammetry technique for reconstructing the outer coloured morphology of various creatures and published more than 1000 models online (https://sketchfab.com/ffishAsia-and-floraZia). By suspending it with nylon fishing line(s), taking d...
Inle Lake, an ancient lake located in the Shan Plateau of Myanmar, is a biogeographically attractive region with high fish endemism. Some endemic species inhabit the lake as well as the surrounding areas. The genetic and ecological relationships between populations in the lake and surrounding areas provide important insights into the process underl...
This study investigated the fish fauna diversity of the Shimokita and Tsugaru peninsulas in the northernmost part of the main island of Japan. Since ocean currents influence brackish and saltwater fish distribution and dispersion, it is assumed that in the target area where ocean currents are complex, the ichthyofaunal diversity of river estuaries...
Hopong, a small town in the Salween (Thanlwin) River Basin, Myanmar, is located 35 km northeast of Inle Lake, a famous ancient lake with numerous endemic fish species. We surveyed the fish fauna of a spring pond in Hopong in 2016, 2019 and 2020 and identified 25 species. Of these, seven, including Inlecypris auropurpureus and Sawbwa resplendens , h...
River estuaries provide various ecosystem services, such as nutrient circulation, climate change mitigation, habitats and coastal defence. Information on the various taxonomic groups is collected from large-scale estuaries; however, few studies have focused on river estuaries of small and medium-sized rivers. In particular, information on river est...
Correction to Chapter 1 in: Yahara T. et al. (2021) Decision Science for Future Earth: A Conceptual Framework. In: Yahara T. (eds) Decision Science for Future Earth. Springer, Singapore. 10.1007/978-981-15-8632-3_1
The Asia-Pacific Biodiversity Observation Network (APBON) was launched in 2009, in response to the establishment of the Biodiversity Observation Network under the Group on Earth Observations in 2008. APBON's mission is to increase exchange of knowledge and know-how between institutions and researchers concerning biodiversity science research in the...
The purpose of this chapter is to review progress in our understanding of human behavior and decision-making relevant to future earth research agenda, and propose Decision Science as a hub of knowledge networks connecting disciplinary and interdisciplinary sciences with the practice of problem-solving. This review is composed of four sections. Firs...
Although many significant policies and legislation have been put forth by the Chinese government aiming toward "ecological civilization" for the aquatic environment, in practice, the situation is still undesirable. A pioneering multi-year study has since been conducted on the East Tiaoxi River (a major tributary of the renowned Yangtze River), focu...
The purpose of this research is to describe and evaluate an example of the impact of large-scale disasters on a fish fauna of rivers. In the northern part of Kyushu from July 5th to 6th, 2017, a heavy rain fell steeply into a specific area. Especially in Asakura city, Fukuoka, Japan there was a recordable heavy rain which resulted in major damage t...
Predicting speciation is a fundamental goal of research in evolutionary ecology. The probability of speciation is often positively correlated with ecosystem size. Although the mechanisms driving this correlation are generally difficult to identify, a shared geographic and ecological context provides a suitable condition to study the mechanisms that...
The biodiversity of stream-dwelling fish and the effects of oil palm and acacia plantations on this biodiversity were evaluated by field research conducted in the Bintulu region of central Sarawak, Malaysia. A quantitative survey was conducted at 61 locations by electrofishing. These 61 locations included 16 sites in oil palm plantations, five site...
It is important to understand carbon (C) dynamics in terrestrial and coastal ecosystems in order to develop a strategy to control carbon dioxide effluxes. However, the factors determining concentrations of riverine carbon are still largely unknown, especially in Southeast Asia. We investigated the spatial distribution of dissolved and particulate o...
Water pollution is one of the most serious aquatic environmental problems worldwide. In China, recent agricultural and industrial development has resulted in rapid changes in aquatic ecosystems. Here, we reveal the effects of water pollution on the phylogenetic community structure of aquatic macrophytes in the Tiaoxi River, China.
We placed a recta...
Dam removal is typically intended for river restoration or as a countermeasure for aging dams. The influence of dam removal has mainly been studied in large rivers. This study is intended to investigate the influence of the sediment supplied after opening a check dam drain in a small steep stream to contribute to the establishment of sediment relea...
Freshwater mussels (Bivalvia: Unionidae), which are keystone species of freshwater ecosystems, are in global decline. In addition to ecological/genetic studies, morphological examinations are needed to help provide information for the development of additional freshwater mussel studies and eventually conservation efforts for freshwater ecosystems....
Elemental composition of the shell by EDS
We surveyed fish communities and environmental characteristics above and below the weir set in the lowest reaches of each four rivers in northern region of Ibaraki Prefecture in August of 2014. Of 16 fish species captured, seven were diadromous fishes, seven were freshwater fishes, and two were peripheral fish species. Diversity index (H') of fishe...
Loach is one of the major cypriniform fishes in freshwater habitats of Japan; 35 taxa/clades have, until now, been recognised. Parallel to genetic studies, morphological examinations are needed for further development of loach study, eventually ichthyology and fish biology. Digital archiving, concerning taxonomy, ecology, ethology etc., is one of th...
The current distribution of the Japanese eel Anguilla japonica and giant mottled eel A. marmorata were surveyed in 1120 inland water bodies on mainland Kyushu and the Nansei Islands, southern Japan. Anguilla japonica occurred at 8 and 2 sites on Kyushu and the Nansei Islands, respectively, the low catch rate apparently reflecting its cryptic life s...
It has hitherto been unknown whether the paradise fish Macropodus opercularis that inhabits the Ryukyu Archipelago, Japan, is native to the region or was introduced. This study examined the genetic identity of fish from five islands in the Ryukyu Archipelago (Okinoerabu, Okinawa, Yagaji, Kume, and Minamidaito islands) and compared it with those fro...
In wild populations of the Japanese endemic freshwater fish Minami-medaka (Oryzias latipes), genetic disturbances caused by crossing with artificially introduced exotic populations, especially an orange-red commercial variety of medaka commonly called himedaka, have been reported throughout Japan. Minami-medaka populations in the Kyushu-Ryukyu Isla...
Background
Inle (Inlay) Lake, an ancient lake of Southeast Asia, is located at the eastern part of Myanmar, surrounded by the Shan Mountains. Detailed information on fish fauna in and around the lake has long been unknown, although its outstanding endemism was reported a century ago.
New information
Based on the fish specimens collected from marke...
Both hydropower dams and global warming pose threats to freshwater fish diversity. While the extent of global warming may be reduced by a shift towards energy generation by large dams in order to reduce fossil-fuel use, such dams profoundly modify riverine habitats. Furthermore, the threats posed by dams and global warming will interact: for exampl...
GAM analysis for different RCPs under global warming versus three biodiversity indices in 2050 and 2070.
The blue line indicates the spline curve.
(TIF)
Example of MAXENT results.
Graphical maps show the habitat suitability for shovel-jaw carp, Onychostoma gerlachi (Cyprinidae), under projections derived from different scenarios. Scenario names in parentheses correspond to those in S2 Table. Solid lines in the maps show the distribution threshold (habitat suitability: 0.05) of O. gerlachi.
(TIF)
An example of synergistic effects.
Compared to the dam-construction scenario, the distributional range of mudcarp, Cirrhinus jullieni (Cyprinidae), was projected to expand under the synergistic effects of dams and global warming. However, because of drainage-basin fragmentation caused by dams, the full expansion of distribution that would have occu...
GAM analysis for total generating capacity versus three biodiversity indices.
The blue line indicates the spline curve.
(TIF)
Differences in response patterns to dams and global warming.
Most fish species showed a contraction in range extent under the planned-dam scenarios (assuming 100% of planned dams were built), while global-warming scenario ip85bi70 had little effect on average habitable area, although the extent of variation was sensitive to species identity. A simi...
The distribution of fluvial fish was surveyed at 55 sites on Yakushima Island, Japan, which has precipitous mountains and waterfalls (below- or no-waterfall sites: 31; above-waterfall sites: 24). Eleven diadromous and one river resident (introduced Oncorhynchus masou masou) species were found, but absolutely no fish were detected at the 18 above-wa...
The fluvial fish fauna of the Gelami and Tinggi Rivers, before and after the construction of a building complex
in the adjacent forest, was compared on the basis of a literature survey (covering the period: 1997–2003) and a field survey in 2010. Forty fish species, representing 14 families and 5 orders, were recorded in total, the field survey incl...
Mainland Southeast Asia, the region that includes Cam-bodia, Laos, Thailand, Vietnam and Peninsular Malaysia, is known for its high diversity of freshwater fishes (e.g., Myers et al. 2000; Dudgeon 2005; Kang et al. 2009). Recently, however, intensive exploitation pressures have been threatening this biodiversity. While some studies on fish fauna of...
Index of biological integrity (IBI) based on fish to assess the river health in the East Tiaoxi River was established in this study. Two IBI systems and assessment criteria were established due to sampling sites being from two different eco-regions. The sampling sites from the tributaries in the upper reaches of East Tiaoxi were in the eco-zone of...
Mesohabitat selection in fluvial fishes was studied in a small tropical stream of the Malay Peninsula. A total of 681 individuals representing 24 species were sampled at 45 stations within heterogeneous stream (ca. 1 km in length), in which water depth, water velocity, substrate size, and riparian canopy cover were measured as environmental variabl...
We conducted fish sampling at 90 sites in the East Tiaoxi River, Yangtze River basin, China. Seventy-seven species belonging to 19 families were recorded, and photographs of live specimens are provided for all species. Three exotic species were recorded: Cirrhinus cirrhosus, C. molitorella, Gambusia affinis. The top 3 species-rich families were Cyp...
Waterfalls may affect fish distribution and genetic structure within drainage networks even to the extent of leading evolutionary events. Here, parallel evolution was studied by focusing on waterfall and the landlocked freshwater goby Rhinogobius sp. YB (YB), which evolved from amphidromous R. brunneus (BR). The fish fauna was surveyed at 30 sites...
East Tiaoxi River is one of the largest inflowing rivers into Taihu Lake, and the fish fauna in the river is poorly understood. In the present study, an extensive survey of fish was conducted in October and November 2009, May and September 2010 and May 2011 covering a total of 55 sites along the whole river. A total of 84 freshwater fish species be...
In the autumn of 2004, a typhoon caused a catastrophic flood of the Miyagawa River in Japan. Based upon snorkeling surveys
conducted every autumn from 2005 to 2009, we monitored the post flood fluctuation of the local fish assemblages at nine sites
of both the main stream and subsidiary streams of the river. Results revealed that species richness s...
The distribution patterns of loaches (Teleostei: Cobitoidea) were revealed in the River East Tiaoxi in China. Eight loach species (Cobitis sinensis, C. dolichorhynchus, C. laterimaculata, Misgurnus anguillicaudatus, Paramisgurnus dabryanus, Leptobotia tchangi, Vanmanenia pingchowensis and V. stenosoma) were found in field surveys at 90 sites. A mac...
We validated the effects of a passive integrated transponder (PIT) tagging process on the oriental weather loach Misgurnus anguillicaudatus. Laboratory experiments were conducted to assess the effects of PIT tagging on fish survival, growth, wound healing, and
tag omission. Two tagging protocols, standard syringe injection versus insertion through...
We provide the first evidence for navigation impact on resident river fish in China. The survey was conducted in the East Tiaoxi River that discharges into Lake Taihu near Shanghai, on which cargo ship traffic has dramatically increased in the recent economic development period. Water turbidity, ship traffic and other environmental factors were eva...
Genetic endemism of island organisms and the threat to such organisms provided by artificially introduced genes are aspects
of major interest in evolutionary and conservation studies of fishes. In this paper the genetic population structure of the
oriental weatherloach, Misgurnus anguillicaudatus, in Sado Island of Japan was elucidated by phylogeog...
The spatial and temporal variations of the fish assemblages in mountain streams of China are poorly understood. The relationships between the fish assemblage and selected habitat features were examined in the North Tiaoxi River, one of headwaters of Taihu Lake. A total of 3,348 individuals belonging to 5 orders, 11 families, 25 genera and 34 specie...
Degradation of river ecosystems and loss of aquatic biodiversity are widespread and ongoing problems. Many government agencies and various stakeholders now consider river restoration an essential component of conservation and natural resource management. However, despite legal mandates, massive expenditure and the burgeoning industry in aquatic and...
This paper aims to propose concrete measures for the conservation of the mud loach (Misgurnus anguillicaudatus) in Sado Island of Japan, associated with the reintroduction of Japanese crested ibis (Nipponia nippon) that has a predilection to feed on the loach. The field survey was conducted at 80 sites on 7 rivers in the island in August 2007 and M...
The distribution of the oriental weatherloach, Misgurnus anguillicaudatus, together with related environmental factors were surveyed at 185 paddy field locations on Sado Island in Japan. This was associated with the reintroduction of the Japanese crested ibis, Nipponia nippon, which prefers to feed on the loach. Loach were found to be present at 90...
As a markless form of stream-resident masu salmon (Oncorhynchus masou), the so-called ‘iwame,’ which can be distinguished from the sympatric normal form of the salmon by their plain body pattern,
has been previously reported among seven local populations (A–G) in Japanese mountain streams. In the present study, all populations
but B (where any info...
A robust method to identify individual spawning Japanese charr Salvelinus leucomaenis japonicus using visible implant elastomer (VIE) and commercial binoculars was developed. Successful individual identification was c. 80% for 1693 observation trials, and successful pair recognition was c. 70% for 337 pairs of spawning fish.
Kirikuchi charr, Salvelinus leucomaenis japonicus, the southernmost population of the genus Salvelinus, is endemic to the Kii Peninsula, central Honshu, Japan. Kirikuchi charr are currently threatened due to anthropogenic disturbances. To conserve Kirikuchi charr, we investigated long-term population dynamics of Kirikuchi charr and red-spotted masu...
We observed transient status-dependent female mimicry related to reproductive behaviour in landlocked red-spotted masu salmon (Oncorhynchus masou ishikawae). In females, the lower half of the lateral flank underwent solid blackening as an ovipositional character, and 70% of subordinate males showed a similar lateral pattern (M-type). In contrast, m...
The markless trout (iwame, Oncorhynchus iwame) has long been suspected not to be an independent species, but rather a markless mutant form of the red-spotted masu salmon (amago, O. masou ishikawae). Nevertheless, no field study has examined this issue. Here we report a field study on the reproductive ecology of iwame and amago coexisting in the upp...
This paper presents a non-destructive sexing method that can be employed in fluvial salmonids and presumably some other taxa of fish. The sex of a fish is identified and assessed by indirectly palpating the gonad.
The age of the Ajime-loach,Niwaella delicata (a species endemic to Japan), was determined from the number of concentric rings appearing on the cross-sectional surface
of the erectile spine (peculiar to Cobitidae). The ages of loaches caught in the Yura River, Kyoto, were determined and growth
rates for each sex estimated. It was found that size dim...