Ken-ichi Numachi

745 total citations
45 papers, 640 citations indexed

About

Ken-ichi Numachi is a scholar working on Genetics, Molecular Biology and Ecology. According to data from OpenAlex, Ken-ichi Numachi has authored 45 papers receiving a total of 640 indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Genetics, 19 papers in Molecular Biology and 18 papers in Ecology. Recurrent topics in Ken-ichi Numachi's work include Identification and Quantification in Food (18 papers), Genetic diversity and population structure (15 papers) and Marine and fisheries research (9 papers). Ken-ichi Numachi is often cited by papers focused on Identification and Quantification in Food (18 papers), Genetic diversity and population structure (15 papers) and Marine and fisheries research (9 papers). Ken-ichi Numachi collaborates with scholars based in Japan, Mexico and Russia. Ken-ichi Numachi's co-authors include Kazuo Mashiko, Lori J. Bell, Jack T. Moyer, Hideyuki Imai, Katsuyuki Hamasaki, Luis A. Pastene, Katsumi Tsukamoto, Takanori Kobayashi, Naoto Hanzawa and Susumu Segawa and has published in prestigious journals such as The American Naturalist, Marine Ecology Progress Series and Aquaculture.

In The Last Decade

Ken-ichi Numachi

45 papers receiving 581 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Ken-ichi Numachi Japan 16 314 294 239 217 181 45 640
Mamoru Yabe Japan 13 174 0.6× 158 0.5× 349 1.5× 445 2.1× 344 1.9× 67 848
Lilia Bahri‐Sfar Tunisia 11 161 0.5× 340 1.2× 192 0.8× 159 0.7× 159 0.9× 28 503
Yuri Ph. Kartavtsev Russia 14 173 0.6× 380 1.3× 521 2.2× 277 1.3× 209 1.2× 53 777
J. K. J. VAN HOUDT Belgium 17 254 0.8× 484 1.6× 294 1.2× 320 1.5× 190 1.0× 31 839
Mathew Woodwark United Kingdom 6 222 0.7× 688 2.3× 370 1.5× 452 2.1× 268 1.5× 8 912
Anna Kristín Daníelsdóttir Iceland 18 267 0.9× 422 1.4× 336 1.4× 396 1.8× 141 0.8× 41 882
W. F. Hutchinson United Kingdom 5 239 0.8× 464 1.6× 188 0.8× 296 1.4× 84 0.5× 6 706
Tetsuo Yoshino Japan 14 238 0.8× 128 0.4× 312 1.3× 492 2.3× 331 1.8× 86 759
Marı́a Inés Roldán Spain 19 341 1.1× 440 1.5× 329 1.4× 251 1.2× 252 1.4× 56 905
J. C. Avise United States 8 279 0.9× 480 1.6× 261 1.1× 203 0.9× 93 0.5× 11 777

Countries citing papers authored by Ken-ichi Numachi

Since Specialization
Citations

This map shows the geographic impact of Ken-ichi Numachi's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ken-ichi Numachi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ken-ichi Numachi more than expected).

Fields of papers citing papers by Ken-ichi Numachi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ken-ichi Numachi. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ken-ichi Numachi. The network helps show where Ken-ichi Numachi may publish in the future.

Co-authorship network of co-authors of Ken-ichi Numachi

This figure shows the co-authorship network connecting the top 25 collaborators of Ken-ichi Numachi. A scholar is included among the top collaborators of Ken-ichi Numachi based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ken-ichi Numachi. Ken-ichi Numachi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Sasaki, Hiroyuki, Ken-ichi Numachi, & M.A. Grachev. (2003). The Origin and Genetic Relationships of the Baikal Seal, Phoca sibirica, by Restriction Analysis of Mitochondrial DNA. ZOOLOGICAL SCIENCE. 20(11). 1417–1422. 17 indexed citations
2.
Imai, Hideyuki & Ken-ichi Numachi. (2002). Genetic Variability of Swimming Crab Based on PCR-RFLP Analysis of Mitochondrial DNA D-Loop Region. Aquaculture Science. 50(1). 1–7. 4 indexed citations
3.
Imai, Hideyuki, et al.. (2002). Mitochondrial DNA Markers Confirm Successful Stocking of Mud Crab Juveniles, (Scylla paramamosain) into a Natural Population. Aquaculture Science. 50(2). 149–156. 6 indexed citations
4.
5.
Numachi, Ken-ichi, et al.. (2002). Homogeneidad genética en tiburón angelito (Squatina californica) del Golfo de California, evidenciada por análisis PCR-RFLP de la región control del ADN mitocondrial.. 6(17). 37–42. 3 indexed citations
6.
Kobayashi, Takanori, et al.. (2000). Genetic Variability of Japanese Longfin Smelt by Restriction Fragment Length Polymorphism Analysis of Mitochondrial DNA.. NIPPON SUISAN GAKKAISHI. 66(2). 269–274. 4 indexed citations
7.
8.
Matsuishi, Takashi, Hirohisa Kishino, & Ken-ichi Numachi. (1995). A Model of Gene Displacement by Stocking Activities.. NIPPON SUISAN GAKKAISHI. 61(3). 326–330. 10 indexed citations
9.
Masuda, Ryuichi, Takashi Kamaishi, Takanori Kobayashi, Katsumi Tsukamoto, & Ken-ichi Numachi. (1995). Mitochondrial DNA differentiation between two sympatric morphs of striped jack near Japan. Journal of Fish Biology. 46(6). 1003–1010. 7 indexed citations
10.
Grijalva‐Chon, José Manuel, et al.. (1994). Mitochondrial DNA analysis of North Pacific sword-fish Xiphias gladius population structure. Marine Ecology Progress Series. 115. 15–19. 19 indexed citations
11.
12.
Hanzawa, Naoto, Nobuhiko Taniguchi, & Ken-ichi Numachi. (1988). Geographical differentiation in populations of Japanese dace Tribolodon hakonensis deduced from allozymic variation. ZOOLOGICAL SCIENCE. 5(2). 449–461. 11 indexed citations
13.
Watanabe, Kenichi & Ken-ichi Numachi. (1988). Biochemical demonstration and morphological examination of the sibling species of the frog flounder in the eastern part of the Seto Inland Sea.. NIPPON SUISAN GAKKAISHI. 54(5). 765–772. 3 indexed citations
14.
Numachi, Ken-ichi. (1981). A simple method for preservation and scanning of starch gels. Biochemical Genetics. 19(3-4). 233–236. 10 indexed citations
15.
Numachi, Ken-ichi. (1972). Genetic Polymorphism of Tetrazolium Oxidase in Black Rockfish. NIPPON SUISAN GAKKAISHI. 38(7). 789–789. 12 indexed citations
16.
Numachi, Ken-ichi, et al.. (1972). Duplicate Genetic Loci and Variant Froms of Malate Dehydrogenase in Chum Salmon and Rainbow Trout. NIPPON SUISAN GAKKAISHI. 38(7). 699–706. 15 indexed citations
17.
Numachi, Ken-ichi. (1972). GENETIC CONTROL AND SUBUNIT COMPOSITIONS OF LACTATE DEHYDROGENASE IN <i>PSEUDORASBORA PARVA</i>. The Japanese Journal of Genetics. 47(3). 193–201. 9 indexed citations
18.
Numachi, Ken-ichi. (1971). Electrophoretic Variants of Catalase in the Black Rockfish, Sebastes inermis. NIPPON SUISAN GAKKAISHI. 37(12). 1177–1181. 8 indexed citations
19.
Numachi, Ken-ichi. (1962). Serological Studies of Species and Races in Oysters. The American Naturalist. 96(889). 211–217. 7 indexed citations
20.
Numachi, Ken-ichi. (1959). SEROLOGICAL STUDIES ON RELATIONSHIPS AMONG OYSTERS OF DIFFERENT GENUS, SPECIES AND RACES. Tohoku Journal of Agricultural Research. 10(3). 313–319. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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