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- Publications
- Influence
Biomagnification of Trace Elements in the Aquatic Food Web in the Mekong Delta, South Vietnam Using Stable Carbon and Nitrogen Isotope Analysis
- Tokutaka Ikemoto, Nguyễn Phúc Cẩm Tú, +5 authors I. Takeuchi
- Chemistry, Medicine
- Archives of environmental contamination and…
- 1 April 2008
In the present study, we report the concentrations of 21 trace elements (V, Cr, Mn, Co, Cu, Zn, As, Se, Rb, Sr, Mo, Ag, Cd, Sn, Sb, Cs, Ba, Hg, Tl, Pb, and Bi), as well as the results of the analysis… Expand
Analysis of biomagnification of persistent organic pollutants in the aquatic food web of the Mekong Delta, South Vietnam using stable carbon and nitrogen isotopes.
- Tokutaka Ikemoto, Nguyễn Phúc Cẩm Tú, +5 authors I. Takeuchi
- Chemistry, Medicine
- Chemosphere
- 1 May 2008
The present study elucidated the biomagnification profiles of persistent organic pollutants (POPs) through a tropical aquatic food web of Vietnam based on trophic characterization using stable… Expand
A RAD-based linkage map and comparative genomics in the gudgeons (genus Gnathopogon, Cyprinidae)
- Ryo Kakioka, T. Kokita, H. Kumada, K. Watanabe, Noboru Okuda
- Medicine, Biology
- BMC Genomics
- 16 January 2013
BackgroundThe construction of linkage maps is a first step in exploring the genetic basis for adaptive phenotypic divergence in closely related species by quantitative trait locus (QTL) analysis.… Expand
Bivalve tissue as a carbon and nitrogen isotope baseline indicator in coastal ecosystems
- Kayoko Fukumori, M. Oi, +9 authors H. Takeoka
- Biology
- 10 August 2008
Abstract Pinctada fucata martensii mantle tissue and gut contents were examined as baseline indicators of carbon and nitrogen isotope composition at six stations in the Uwa Sea, Japan. Substantial… Expand
Trophic polymorphism in bluegill sunfish (Lepomis macrochirus) introduced into Lake Biwa: evidence from stable isotope analysis
- Kimiko Uchii, Noboru Okuda, R. Yonekura, Zin’ichi Karube, Kazuaki Matsui, Z. Kawabata
- Biology
- Limnology
- 3 February 2007
Trophic polymorphism was recently reported in introduced bluegill (Lepomis macrochirus) in Lake Biwa, Japan, where three morphs are specialized in benthic invertebrates (benthivorous type), submerged… Expand
Vertical heterogeneity of a forest floor invertebrate food web as indicated by stable-isotope analysis
- Y. Okuzaki, I. Tayasu, Noboru Okuda, T. Sota
- Biology
- Ecological Research
- 17 June 2009
Diverse populations of invertebrates constitute the food web in detritus layers of a forest floor. Heterogeneity in trophic interactions within such a species-rich community food web may affect the… Expand
Food sources of the pearl oyster in coastal ecosystems of Japan: Evidence from diet and stable isotope analysis
- Kayoko Fukumori, M. Oi, +8 authors H. Takeoka
- Biology
- 10 February 2008
Abstract We estimated the composition of two food sources for the cultured pearl oyster Pinctada fucata martensii using stable isotopes and stomach content analysis in the coastal areas of the Uwa… Expand
Anatoxin-a-producing Raphidiopsis mediterranea Skuja var. grandis Hill is one ecotype of non-heterocytous Cuspidothrix issatschenkoi (Usačev) Rajaniemi et al. in Japanese lakes
- Y. Hodoki, K. Ohbayashi, Y. Kobayashi, Hiroyuki Takasu, Noboru Okuda, S. Nakano
- Biology
- 2013
In this study, we sought to clarify the phylogenetic and ecological relationships of anatoxin-a-producing strains of Cuspidothrix issatschenkoi (Usacev) Rajaniemi et al. and Raphidiopsis mediterranea… Expand
Stable nitrogen isotopic composition of amino acids reveals food web structure in stream ecosystems
- N. Ishikawa, Y. Kato, +4 authors I. Tayasu
- Biology, Medicine
- Oecologia
- 10 April 2014
The stable N isotopic composition of individual amino acids (SIAA) has recently been used to estimate trophic positions (TPs) of animals in several simple food chain systems. However, it is unknown… Expand
Is the Relationship between Body Size and Trophic Niche Position Time-Invariant in a Predatory Fish? First Stable Isotope Evidence
- T. Nakazawa, Y. Sakai, +4 authors Noboru Okuda
- Biology, Medicine
- PloS one
- 9 February 2010
Characterizing relationships between individual body size and trophic niche position is essential for understanding how population and food-web dynamics are mediated by size-dependent trophic… Expand