Hajime Kosaka

740 total citations
37 papers, 578 citations indexed

About

Hajime Kosaka is a scholar working on Plant Science, Ecology and Ecology, Evolution, Behavior and Systematics. According to data from OpenAlex, Hajime Kosaka has authored 37 papers receiving a total of 578 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Plant Science, 17 papers in Ecology and 15 papers in Ecology, Evolution, Behavior and Systematics. Recurrent topics in Hajime Kosaka's work include Nematode management and characterization studies (16 papers), Insect and Arachnid Ecology and Behavior (13 papers) and Plant and animal studies (12 papers). Hajime Kosaka is often cited by papers focused on Nematode management and characterization studies (16 papers), Insect and Arachnid Ecology and Behavior (13 papers) and Plant and animal studies (12 papers). Hajime Kosaka collaborates with scholars based in Japan, United States and Russia. Hajime Kosaka's co-authors include Takuya Aikawa, Nobuo OGURA, Taisei Kikuchi, John T. Jones, Tomoya Kiyohara, Leighton Pritchard, S. Makino, Natsumi Kanzaki, Vladimir V. Yushin and Katsumi Togashi and has published in prestigious journals such as FEBS Letters, Canadian Journal of Zoology and Molecular and Biochemical Parasitology.

In The Last Decade

Hajime Kosaka

36 papers receiving 545 citations

Peers

Hajime Kosaka

ECOLO

EEBS

Margarida Espada Portugal

Feiping Zhang China

Béatrice Courtial France

Noppol Kobmoo Thailand

Nancy Calderón-Cortés Mexico

Greg Taylor Canada

Gregory J. Wiggins United States

Martine Ehinger Switzerland

Akiomi Yamane Japan

Claudio A. Valero‐Jiménez Netherlands

Margarida Espada Portugal

Hajime Kosaka

557 ×1.3

310 ×1.2

190 ×1.2

ECOLO

81 ×0.7

61 ×0.5

EEBS

Citations per year, relative to Hajime Kosaka Hajime Kosaka (= 1×) peers Margarida Espada

Countries citing papers authored by Hajime Kosaka

Since Specialization

Citations

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

Fields of papers citing papers by Hajime Kosaka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hajime Kosaka

This figure shows the co-authorship network connecting the top 25 collaborators of Hajime Kosaka. A scholar is included among the top collaborators of Hajime Kosaka 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 Kosaka. Hajime Kosaka 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

Kanzaki, Natsumi, et al.. (2023). On the phylogenetic status of Contortylenchus genitalicola Kosaka & Ogura, 1993. Nematology. 25(5). 543–548. 1 indexed citations

Kanzaki, Natsumi, et al.. (2021). Phylogenetic status of Iotonchium Cobb, 1920 and a note on the distribution of I. ungulatum Aihara, 2001. Nematology. 23(10). 1205–1209. 1 indexed citations

Kanzaki, Natsumi, et al.. (2021). Two new insect-associated tylenchids, Sychnotylenchus hibisci n. sp. and Neoditylenchus xiphydriae n. sp. (Tylenchomorpha: Anguinidae), from Japan. Nematology. 24(3). 257–282. 2 indexed citations

Kosaka, Hajime, et al.. (2021). Stylopized hornets (Vespa, Vespidae) as preferred hosts of the parasitic mite Charletonia southcotti (Erythraeidae, Acari). Insectes Sociaux. 68(4). 371–374.

Yushin, Vladimir V., et al.. (2020). Structure, development, and evolutive patterns of spermatozoa in rhabditid nematodes (Nematoda: Rhabditida). Journal of Morphology. 281(11). 1411–1435. 9 indexed citations

Kosaka, Hajime & Natsumi Kanzaki. (2019). Insect parasitic nematodes, Contortylenchus sp. (Tylenchida: Allantonematidae) from the spruce bark beetle Ips typographus and the large larch bark beetle I. cembrae (Coleoptera: Scolytidae) in Japan. Nematological Research (Japanese Journal of Nematology). 49(2). 45–47. 1 indexed citations

Kanzaki, Natsumi, et al.. (2016). Deladenus nitobei n. sp. (Tylenchomorpha: Allantonematidae) isolated from Sirex nitobei (Hymenoptera: Siricidae) from Aomori, Japan, a new member of the siricidicola superspecies. Nematology. 18(10). 1199–1217. 16 indexed citations

Kosaka, Hajime, et al.. (2013). Release of juvenile nematodes at hibernation sites by overwintered queens of the hornet Vespa simillima. Insectes Sociaux. 60(3). 383–388. 5 indexed citations

Kanzaki, Natsumi, et al.. (2011). Poikilolaimus carsiops n. sp. (Rhabditida: Rhabditidae) associated with Neotermes koshunensis (Kalotermitidae) in Kenting National Park, Taiwan. Nematology. 13(2). 155–164. 9 indexed citations

10.

Makino, S., et al.. (2010). First record of occurrence of Xenos moutoni (Strepsiptera; Stylopidae), an important parasite of hornets (Hymenoptera: Vespidae: Vespa), in Korea. Journal of Asia-Pacific Entomology. 14(1). 137–139. 8 indexed citations

11.

Kanzaki, Natsumi & Hajime Kosaka. (2009). Relationship between the Nematodes and Bark and the Ambrosia Beetles.. Journal of the Japanese Forest Society. 91(6). 446–460. 1 indexed citations

12.

Masuya, Hayato, et al.. (2008). Haradamyces foliicola anam. gen. et sp. nov., a cause of zonate leaf blight disease in Cornus florida in Japan. Mycological Research. 113(2). 173–181. 12 indexed citations

13.

Kikuchi, Taisei, Takuya Aikawa, Hajime Kosaka, et al.. (2007). Expressed sequence tag (EST) analysis of the pine wood nematode Bursaphelenchus xylophilus and B. mucronatus. Molecular and Biochemical Parasitology. 155(1). 9–17. 73 indexed citations

14.

Kanzaki, Natsumi, et al.. (2007). Sphaerularia vespae sp. nov. (Nematoda, Tylenchomorpha, Sphaerularioidea), an Endoparasite of a Common Japanese Hornet, Vespa simillima Smith (Insecta, Hymenoptera, Vespidae). ZOOLOGICAL SCIENCE. 24(11). 1134–1142. 13 indexed citations

15.

Aikawa, Takuya, Taisei Kikuchi, & Hajime Kosaka. (2006). Population structure of Bursaphelenchus xylophilus within single Pinus thunbergii trees inoculated with two nematode isolates. Forest Pathology. 36(1). 1–13. 16 indexed citations

16.

Kikuchi, Taisei, John T. Jones, Takuya Aikawa, Hajime Kosaka, & Nobuo OGURA. (2004). A family of glycosyl hydrolase family 45 cellulases from the pine wood nematode Bursaphelenchus xylophilus. FEBS Letters. 572(1-3). 201–205. 165 indexed citations

17.

Kosaka, Hajime. (2003). Geographical distribution, insect and fungal host preferences and annual fluctuation of parasitism of the entomophagous and mycetophagous nematode, Contortylenchus genitalicola (Tylenchida: Allantonematidae), a parasite of the Japanese pine sawyer, Monochamus alternatus (Coleoptera: Cerambycidae). Nematology. 5(4). 609–613. 3 indexed citations

18.

Kosaka, Hajime, et al.. (1991). Biology of a Tylenchid Nematode Parasitic On the Japanese Pine Sawyer, Monochamus Alternatus. Nematologica. 37(1-4). 455–469. 5 indexed citations

19.

Kosaka, Hajime & Nobuo OGURA. (1990). Rearing of the Japanese Pine Sawyer, Monochamus alternatus (Coleoptera : Cerambycidae) on Artificial Diets. Applied Entomology and Zoology. 25(4). 532–534. 26 indexed citations

20.

Ohta, Masaharu, et al.. (1981). [The ultrastructure of a gangliocytoma (author's transl)].. PubMed. 33(8). 817–24. 6 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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