Hajime Ishikawa

7.5k total citations · 1 hit paper
166 papers, 5.6k citations indexed

About

Hajime Ishikawa is a scholar working on Insect Science, Molecular Biology and Plant Science. According to data from OpenAlex, Hajime Ishikawa has authored 166 papers receiving a total of 5.6k indexed citations (citations by other indexed papers that have themselves been cited), including 83 papers in Insect Science, 41 papers in Molecular Biology and 38 papers in Plant Science. Recurrent topics in Hajime Ishikawa's work include Insect symbiosis and bacterial influences (71 papers), Insect-Plant Interactions and Control (43 papers) and Legume Nitrogen Fixing Symbiosis (23 papers). Hajime Ishikawa is often cited by papers focused on Insect symbiosis and bacterial influences (71 papers), Insect-Plant Interactions and Control (43 papers) and Legume Nitrogen Fixing Symbiosis (23 papers). Hajime Ishikawa collaborates with scholars based in Japan, United States and Russia. Hajime Ishikawa's co-authors include Tetsuhiko Sasaki, Shuji Shigenobu, Hidemi Watanabe, Yoshiyuki Sakaki, Masahira Hattori, Atsushi Nakabachi, Takema Fukatsu, Shinji Masui, Haruhiko Fujiwara and Hosami Harada and has published in prestigious journals such as Nature, Science and Proceedings of the National Academy of Sciences.

In The Last Decade

Hajime Ishikawa

156 papers receiving 5.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Genome sequence of the endocellular bacterial symbiont of aphids Buchnera sp. APS

2000 1.0k citations Hajime Ishikawa et al. profile →

Peers

Countries citing papers authored by Hajime Ishikawa

Since Specialization

Citations

This map shows the geographic impact of Hajime Ishikawa'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 Hajime Ishikawa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hajime Ishikawa more than expected).

Fields of papers citing papers by Hajime Ishikawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hajime Ishikawa. 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 Hajime Ishikawa. The network helps show where Hajime Ishikawa may publish in the future.

Co-authorship network of co-authors of Hajime Ishikawa

This figure shows the co-authorship network connecting the top 25 collaborators of Hajime Ishikawa. A scholar is included among the top collaborators of Hajime Ishikawa 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 Hajime Ishikawa. Hajime Ishikawa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Conversion surgery following severe cytokine release syndrome induced by immune checkpoint inhibitors doublet in advanced hepatocellular carcinoma 2025 ·Clinical Journal of Gastroenterology ·Haruki Mori, Hiromitsu Maehira, (unknown), Hajime Ishikawa, (unknown), Sachiko Kaida, (unknown), M. Kojima, (unknown), Masaji Tani	0
2	Perineoplasty for anal incontinence after obstetric anal sphincter injury repair: a case report 2024 ·Surgical Case Reports ·M. Kojima, Toru Miyake, (unknown), (unknown), (unknown), Sachiko Kaida, Katsushi Takebayashi, Hiromitsu Maehira, Haruki Mori, Reiko Otake, Takashi Matsunaga, Hajime Ishikawa, Tomoharu Shimizu, Masaji Tani	1
3	Clinical impact of various drain-fluid data for the postoperative complications after hepatectomy: criteria of prophylactic drain removal on postoperative day 1 2024 ·Langenbeck s Archives of Surgery ·(unknown), Hiromitsu Maehira, (unknown), (unknown), Hajime Ishikawa, Katsushi Takebayashi, M. Kojima, Sachiko Kaida, Toru Miyake, Masaji Tani	0
4	The 160-Kilobase Genome of the Bacterial Endosymbiont Carsonella 2006 ·Science ·Atsushi Nakabachi, Atsushi Yamashita, Hidehiro Toh, Hajime Ishikawa, Helen E. Dunbar, Nancy A. Moran, Masahira Hattori	402
5	Interspecies Somatic Cell Nuclear Transfer for In Vitro Production of Antarctic Minke Whale (Balaenoptera bonaerensis) Embryos 2004 ·Cloning and Stem Cells ·(unknown), Ken Sawai, (unknown), (unknown), Hajime Ishikawa, Seiji Ohsumi, Yutaka Fukui	27
6	Distribution of Trihalomethanes in Sea and River Water in Aichi Prefecture. 1999 ·NIPPON KAGAKU KAISHI ·Hajime Ishikawa	1
7	Development of Sour Resistant UOE Line Pipe for Low-Temperature Service. 1999 ·Materia Japan ·(unknown), Hajime Ishikawa, (unknown), Masaaki Sugiyama, Hiroshi Tamehiro	1
8	Physical and Genetic Map of the Genome of Buchnera, the Primary Endosymbiont of the Pea Aphid Acyrthosiphon pisum 1999 ·Journal of Molecular Evolution ·Hubert Charles, Hajime Ishikawa	74
9	Cerataphis jamuritsu, a Subtropical Aphid Producing Soldiers in Large, Hard Galls (Homoptera) 1998 ·Entomological Science ·Shigeyuki Aoki, Utako Kurosu, Takema Fukatsu, Hajime Ishikawa	6
10	Hemagglutinating properties of apolipophorin III from the hemolymph ofGalleria mellonella larvae 1998 ·Archives of Insect Biochemistry and Physiology ·(unknown), Hajime Ishikawa, Kazuo Yamamoto, František Sehnal	41
11	Differential Display of mRNAs Related to Amino Acid Metabolism in the Endosymbiotic System of Aphids 1997 ·Insect Biochemistry and Molecular Biology ·Atsushi Nakabachi, Hajime Ishikawa	29
12	Secondary Monoecy of the Gall Aphid Thecabius populimonilis (Homoptera) 1996 ·昆蟲 ·Shigeyuki Aoki, Utako Kurosu, Nancy A. Moran, Hajime Ishikawa	1
13	Phylogeny of Cerataphidini Aphids Revealed by Their Symbiotic Microorganisms and Basic Structure of Their Galls : Implications for Host-Symbiont Coevolution and Evolution of Sterile Soldier Castes 1994 ·ZOOLOGICAL SCIENCE ·Takema Fukatsu, Shigeyuki Aoki, Utako Kurosu, Hajime Ishikawa	72
14	Occurrence of Chaperonin 60 and Chaperonin 10 in primary and secondary bacterial symbionts of aphids: Implications for the evolution of an endosymbiotic system in aphids 1993 ·Journal of Molecular Evolution ·Takema Fukatsu, Hajime Ishikawa	41
15	Accumulation of adenine and thymine in agroE-homologous operon of an intracellular symbiont 1993 ·Journal of Molecular Evolution ·(unknown), Hajime Ishikawa	29
16	Nucleotide sequence and presumed secondary structure of the internal transcribed spacers of rDNA of the pea aphid, acyrthosiphon pisum 1992 ·Comparative Biochemistry and Physiology Part B Comparative Biochemistry ·O‐Yu Kwon, Hajime Ishikawa	16
17	Biochemical and Molecular Aspects of Endosymbiosis in Insects 1989 ·International review of cytology ·Hajime Ishikawa	94
18	Low molecular weight RNA of Drosophila cells which is induced by heat shock — I. Synthesis and its effect on protein synthesis 1988 ·Comparative Biochemistry and Physiology Part B Comparative Biochemistry ·(unknown), Haruhiko Fujiwara, Hajime Ishikawa	2
19	A Species-Specific Protein of an Aphid is Produced by Its Endosymbiont(COMMUNICATION)(Biochemistry) 1985 ·ZOOLOGICAL SCIENCE ·Hajime Ishikawa, (unknown)	3
20	Molecular aspects of intracellular symbiosis in the aphid mycetocyte 1984 ·ZOOLOGICAL SCIENCE ·Hajime Ishikawa	14

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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