TAKUMI SAITO Web Site

Articles (Peer-reviewed)

* corresponding author"equal contribution
53. Saito T*, Hirano T, Kagawa O, Uchida S, Sasaki T. 2026. A new species of the genus Gyraulus (Hygrophila: Planorbidae) from Chichijima Island, Japan. Venus: accepted.
52. Suenaga T, Saito T*, Kagawa O, Suyama Y, Tsunamoto T, Watanabe S, Yanagisawa T, Taira M, Chiba S. 2026. Hidden in the dark: complex evolutionary history revealed by genome-wide analyses of cave amphipods. Journal of Evolutionary Biology: accepted.
51. Saito T*, Ishii Y, Ito S, Linscott TM, Ye B, Do VT, Shovon MS, Prozorova L, Surenkhorloo P, Shau-Hwai AT, Fujino Y, Uechi T, Uchida S, Yamazaki D, Morii Y, Kimura K, Fukuda H, Miura O, Hirano H, Chiba S. 2025. The nature of oceanic dispersal in the diversification process on insular systems in Asia. Global Ecology and Biogeography: accepted
50. Saito T*, Sawada N, Ye B, Akiyama K, Hirano T, Kimura S, Chiba S, Fukuda H. 2026. Two introduced bithyniid species previously attributed to Parafossarulus Annandale, 1924 (= Pseudovivipara Annandale, 1918; Caenogastropoda: Truncatelloidea) from China into Japan — Their identifications, anatomical redescriptions and genetic status. Malacoloigia: accepted.
49. Khanam A, Zaman MS, Islam MA, Suhi S, Hossain MR, Shovon MS, Saito T, Hirano T, Ozeki Y, Fujii Y, Asaduzzaman AKM, Kabir SR, Hasan I*. 2025. Novel mannose-binding snail mucus lectins from Lissachatina fulica exhibited antimicrobial, antitumor and insecticidal activities. Fish & Shellfish Immunology 165: 110565. https://doi.org/10.1016/j.fsi.2025.110565
48. Saito T*, Badsha MB, Hasan MJ, Tanchangya TSR, Shovon MS. 2025. Notes on egg-laying behaviour of Amphidromus globonevilli Sutcharit & Panha, 2015 in Bangladesh. Folia Malacologica: in press.
47. Saito T*", Nekola JC", Nováková M, Líznarová E, de Winter AJT, Horsáková V, Horsák M. 2025. Taxonomic revision of the land snail genus Perpolita (Gastrodontidae: Gastropoda). Systematics and Biodiversity: in press.
46. Nekola JC, Brook FJ, Foon JK, Horsáková V, Ishii Y, Köhler F, Líznarová E, Nováková M, Saito T, Salvador RB, Horsák M. 2025. Will the real invasive snail please stand up? A phylogenetic reconsideration of Paralaoma servilis (Shuttleworth, 1852) (Gastropoda: Stylommatophora: Punctidae). Zoological Journal of the Linnean Society 203: zlae142.
45. Ishii Y*, Kawamoto Y, Shirai A, Saito T, Yamazaki D, Ye B, Ito S, Kondo T, Hirano T, Chiba S, Sano I. 2025. Investigation of introgressive hybridization in endangered Sinohyriopsis mussels (Mollusca: Unionidae) using genome-wide data in Japan. Conservation Genetics 26: 129–138.
44. Seo H, Ansai E, Sase T, Saito T, Takano T, Kojima Y, Waki T*. 2024. Introduction of a snake trematode of the genus Ochetosoma in eastern Japan. Parasitology International 103: 102947.
43. Ansai E, Nitta M, Saito T, Kojima Y, Waki T*. 2024. The first intermediate host of the invasive frog trematode Glypthelmins quieta in Japan. Diseases of Aquatic Organisms 159: 9–14.
42. Saito T*, Nekola JC, Nováková M, Líznarová E, Hirano T, Horsáková V, Horsák M. 2024. Diversification over deep and shallow temporal scales in the Holarctic genus Perpolita (Gastropoda: Gastrodontidae). Zoological Journal of the Linnean Society 201: zlae078.
41. Saito T*, Hirano T, Tanchangya TSR, Badsha MR, Ishii Y, Shariar MS. 2024. Molecular and morphological examinations show diversity in the genus Amphidromus (Camaenidae: Stylommatophora) in Bangladesh. Systematics and Biodiversity 22: 2338076.
40. Saito T*, Ito S, Tanchangya TSR, Shariar MS. 2024. Current status of the invasion of Meghimatium bilineatum and M. pictum (Philomycidae: Gastropoda), with the first record of M. pictum from Bangladesh based on molecular data. Archiv für Molluskenkunde 153: 33–60.
39. Morita K, Saito T, Uechi T, Sawada N, Miura O*. 2023. Out of the ancient lake: multiple riverine colonizations and diversification of the freshwater snails in the genus Semisulcospira around Lake Biwa. Molecular Phylogenetics and Evolution: 107987. https://doi.org/10.1016/j.ympev.2023.107987
38. Hirano T*, Yamazaki D, Ito S, Sato PM, Matsuo A, Saito T, Nishi H, Ye B, Dong Z, Do VT, Tan A, Hwai S, Suyama Y, Chiba S. 2023. Reconsidering invasion history of common land snails in Japan through genome-wide analyses. Biological Invasions 35: 3535–3549.
37. Saito T*", Tatani M", Odaya Y", Chiba S. 2023. Direct evidence for intercontinental dispersal of a snail via a bird. Ecography 10: e06771.
36. Kagawa O*, Hirota SK, Saito T, Uchida S, Watanabe H, Miyazoe R, Yamaguchi T, Matsuno T, Araki K, Wakasugi H, Suzuki S, Kobayashi G, Miyazaki H, Suyama Y, Hanyuda T, Chiba S. 2023. Host-shift speciation proceeded with gene flow in algae covering shells. The American Naturalist 202: 721–732.
35. Ito S*, Yamazaki D, Kameda Y, Kagawa O, Ye B, Saito T, Kimura K, Do VT, Chiba S, Hirano T. 2023. Taxonomic insights and evolutionary history in East Asia terrestrial slugs of the genus Meghimatium. Molecular Phylogenetics and Evolution 182: 107730. https://doi.org/10.1016/j.ympev.2023.107730
34. Hirano T*", Saito T", Ito S", Ye B, Linscott TM, Do VT, Dong Z, Chiba S. 2023. Phylogenomic analyses reveal incongruences between divergence times and fossil records of freshwater snails in East Asia. Molecular Phylogenetics and Evolution 182: 107728. https://doi.org/10.1016/j.ympev.2023.107728
33. Saito T*, Šlachtová E, Nováková M, Horsáková V, Ye B, Beran L, Horsák M. 2023. Invasion history of Gyraulus chinensis (Gastropoda: Planorbidae) in Europe: A molecular and literature-based approach. Hydrobiologia. https://doi.org/10.1007/s10750-023-05157-y
32. Saito T*, Uchida S, Chiba S. 2023. First records of introduced Planorbella duryi (Wetherby, 1879) (Gastropoda: Hygrophila: Planorbidae) in Japan. American Malacological Bulletin 40: 1–10.
31. Saito T*, Sasaki T, Tsunamoto Y, Uchida S, Satake K, Suyama Y, Chiba S. 2022. Even short‐distance dispersal over a barrier can affect genetic differentiation in Gyraulus, an island freshwater snail. Freshwater Biology 67: 1971–1983. https://doi.org/10.1111/fwb.13990
30. Sano I*, Saito T, Ito S, Ye B, Uechi T, Seo T, Do VT, Kimura K, Hirano T, Yamazaki D, Shirai S, Kondo T, Miura O, Miyazaki J-I, Chiba S. 2022. Resolving species-level diversity of Beringiana and Sinanodonta mussels (Bivalvia: Unionidae) in the Japanese archipelago using genome-wide data. Molecular Phylogenetics and Evolution 175: 107563. https://doi.org/10.1016/j.ympev.2022.107563
29. Saito T*", Fujimoto K", Uchida S, Yamazaki D, Hirano T, Sano I, Ye B, Kagawa O, Shariar MS, Morii Y, Prozorova L, Chiba S. 2022. Uncovering overlooked diversity using molecular phylogenetic approach: A case of Japanese sphaeriid clams (Bivalvia: Sphaeriidae). Molecular Phylogenetics and Evolution 173: 107508. https://doi.org/10.1016/j.ympev.2022.107508
28. Hirano T*, Kagawa O, Fujimoto M, Saito T, Uchida S, Yamazaki D, Ito S, Shovon MS, Sawahata T, Chiba S. 2022. Species identification of introduced veronicellid slugs in Japan. PeerJ 10: e13197. https://doi.org/10.7717/peerj.13197
27. Yamazaki D*, Seo T, Hirano T, Saito T, Kameda Y, Fukuda H, Chiba S. 2022. Genetic variation of Littorina horikawai endemic to the western coast and the adjacent islands around Kyushu, Japan inferred by mtDNA analyses. Plankton and Benthos Research 17: 271–276.
26. Hirano T*, Saito T, von Oheimb PV, von Oheimb KCM, Do VT, Yamazaki D, Kameda Y, Chiba S. 2022. Patterns of diversification of the operculate land snail genus Cyclophorus (Caenogastropoda: Cyclophoridae) on the Ryukyu Islands, Japan. Molecular Phylogenetics and Evolution 169: 107407. https://doi.org/10.1016/j.ympev.2022.107407
25. Saito T*. 2022. Idea paper: Monitoring and databasing non-native species to manage establishment debt in aquatic ecosystems. Ecological Research 37: 471–474.
24. Saito T*. 2022. First record of the non-indigenous freshwater snail Galba humilis (Mollusca: Hygrophila: Lymnaeidae) in Japan. BioInvasions Records 11: 428–439.
23. Saito T*, Hirano T, Ye B, Prozorova L, Shariar MS, Do VT, Kimura K, Surenkhorloo P, Kameda Y, Morii Y, Fukuda H, Chiba S. 2021. A comprehensive phylogeography of the widespread pond snail genus Radix revealed restricted colonization due to niche conservatism. Ecology and Evolution 11: 18446–18459. https://doi.org/10.1002/ece3.8434
22. Yamazaki D*, Saito T, Fukuda H. 2021. Shell colour dimorphism in Littorina horikawai on Tsushima Island, Japan. Aquatic Animals: AA2021-8. https://doi.org/10.34394/aquaticanimals.AA2021.0_AA2021-8
21. Ye B*, Hirano T, Saito T, Dong Z, Van TD, Chiba S. 2021. Molecular and morphological evidence for a unified, inclusive Sinotaia quadrata (Benson) (Gastropoda: Viviparidae: Bellamyinae). Journal of Molluscan Studies 87: eyab013. https://doi.org/10.1093/mollus/eyab013
20. Morii Y*, Kitazawa M, Squires TE, Watanabe M, Watanabe Y, Saito T, Yamazaki D, Uchida A, Machida Y. 2021. A complete dietary review of Japanese birds with special focus on molluscs. Scientific Data 8: 19. https://doi.org/10.1038/s41597-021-00800-6
19. Saito T*, Prozorova L, Quang NX, Chiba S. 2020. First molecular examination of Vietnamese mudflat snails in the genus Naranjia Golding, Ponder & Byrne, 2007 (Gastropoda: Amphibolidae). Scientific Reports 10: 18714. https://doi.org/10.1038/s41598-020-75200-8
18. Saito T*, Kagawa O. 2020. New insights from museum specimens: a case of Viviparidae (Caenogastropoda: Mollusca) in Iwakawa’s collection preserved in the National Museum of Nature and Science, Tokyo. Biodiversity Data Journal 8: e52233. https://doi.org/10.3897/BDJ.8.e52233
17. Hirano T*, Saito T, Shariar SM, Tanchangya TSR, Chiba S. 2020. The first record of the introduced land snail Bradybaena similaris (Mollusca: Heterobranchia: Camaenidae) from Bangladesh. BioInvasions Records 9: 730–736. https://doi.org/10.3391/bir.2020.9.4.07
16. Ye B*, Saito T, Hirano T, Dong Z, Van TD, Chiba S. 2020. Human−geographic effects on variations in the population genetics of Sinotaia quadrata (Gastropoda: Viviparidae) that historically migrated from continental East Asia to Japan. Ecology and Evolution 10: 8055–8072. https://doi.org/10.1002/ece3.6456
15. Saito T*, Chiba S, Fukuda H. 2020. Type materials of the species of the Planorbidae (Mollusca, Gastropoda, Hygrophila) described by Shuichi Mori. Molluscan Research 40: 169–182. https://doi.org/10.1080/13235818.2020.1724604
14. Sano I*, Saito T, Miyazaki J, Shirai A, Uechi T, Kondo T, Chiba S. 2020. Evolutionary history and diversity of Unionoid mussels (Mollusca: Bivalvia) in the Japanese archipelago. Plankton and Benthos Research 15:97–111. https://doi.org/10.3800/pbr.15.97
13. Kimura K*, Sano I, Kameda Y, Saito T, Chiba S. 2020. Phylogenetic position of the Japanese land slug genus Granulilimax Minato, 1989 based on preliminary analyses of mitochondrial and nuclear genes. American Malacological Bulletin 37: 53–61. https://doi.org/10.4003/006.037.0202
12. Hirano T*, Saito T, Tsunamoto Y, Koseki J, Prozorova L, Van TD, Matsuoka K, Nakai K, Suyama Y, Chiba S. 2019. Role of ancient lakes in genetic and phenotypic diversification of freshwater snails. Molecular Ecology 28: 5021–5051. https://doi.org/10.1111/mec.15272
11. Nakao M*, Sasaki M, Waki T, Iwaki T, Morii Y, Yanagida K, Watanabe M, Tsuchitani Y, Saito T, Asakawa M. 2019. Distribution records of three species of Leucochloridium (Trematoda: Leucochloridiidae) in Japan, with comments on their microtaxonomy and ecology. Parasitology International 72: 101936. https://doi.org/10.1016/j.parint.2019.101936
10. Kagawa O*, Saito T, Uchida S, Chiba S. 2019. Phenotypic divergence in viviparid snails from a recently-converted freshwater lagoon. Plankton and Benthos Research 14: 189–196. https://doi.org/10.3800/pbr.14.189
9. Hirano T*, Saito T, Tsunamoto Y, Koseki J, Ye B, Van TD, Miura O, Suyama Y, Chiba S. 2019. Enigmatic incongruence between mtDNA and nDNA revealed by multi-locus phylogenomic analyses in freshwater snails. Scientific Reports 9: 6223. https://doi.org/10.1038/s41598-019-42682-0
8. Kimura K*, Saito T, Chiba S, Pak JH. 2019. An updated checklist of land and freshwater gastropod fauna on Ulleung Island, South Korea. American Malacological Bulletin 37: 35–39. https://doi.org/10.4003/006.037.0104
7. Hirano T*, Kameda Y, Saito T, Chiba S. 2019. Divergence before and after the isolation of islands: phylogeny of the Bradybaena land snails on the Ryukyu Islands of Japan. Journal of Biogeography 46: 1197–1213. https://doi.org/10.1111/jbi.13575
6. Hirano T*, Yamazaki D, Uchida S, Saito T, Chiba S. 2019. New record of a slug species Semperula wallacei (Gastropoda: Eupulmonata: Veronicellidae) introduced in Japan. BioInvasions Records 8: 258–265. , https://doi.org/10.3391/bir.2019.8.2.07
5. Saito T*, Hirano T, Prozorova L, Van TD, Sulikowska-Drozd A, Sitnikova T, Surenkhorloo P, Yamazaki D, Morii Y, Kameda Y, Fukuda H, Chiba S. 2018. Phylogeography of freshwater planorbid snails reveals diversification patterns in Eurasian continental islands. BMC Evolutionary Biology 18: 164. https://doi.org/10.1186/s12862-018-1273-3
4. Saito T*, Van TD, Prozorova L, Hirano T, Fukuda H, Chiba S. 2018. Endangered freshwater limpets in Japan are actually alien invasive species. Conservation Genetics 19: 947–958. https://doi.org/10.1007/s10592-018-1068-5
3. Saito T*, Prozorova L, Sitnikova T, Surenkhorloo P, Hirano T, Morii Y, Chiba S. 2018. Molecular phylogeny of glacial relict species: a case of freshwater Valvatidae molluscs (Mollusca: Gastropoda) in North and East Asia. Hydrobiologia 818: 105–118. https://doi.org/10.1007/s10750-018-3595-y
2. Hirano T*, Wada S, Mori H, Uchida S, Saito T, Chiba S. 2018. Genetic and morphometric rediscovery of an extinct land snail on oceanic islands. Journal of Molluscan Studies 84: 148–156. https://doi.org/10.1093/mollus/eyy003
1. Hirano T*, Saito T, Chiba S. 2015. Phylogeny of freshwater viviparid snails in Japan. Journal of Molluscan Studies 81: 435–441. https://doi.org/10.1093/mollus/eyv019

論文 (査読有)

15. 岩崎敬二, 石田惣, 柏尾翔, 亀田勇一, 久保弘文, 齊藤匠, 澤田直人, 芳賀拓真, 早瀬善正, 平野尚浩, 福田宏* 日本産軟体動物の稀少な未記載種の形態的標徴, 分布ならびに棲息環境 Molluscan diversity 7: 印刷中.
14. 澤田直人, 齊藤匠, 福田宏 2025. 山梨県河口湖におけるマメタニシ(新生腹足類: クビキレガイ上科: エゾマメタニシ科)の産出 Molluscan diversity 7: 印刷中.
13. 平野尚浩*, 亀田勇一, 齊藤匠, 山崎大志, 内田翔太 2020. 群馬県・山形県から発見されたハナタテヤマナメクジに類似したナメクジちりぼたん 50: 142–145.
12. 内田翔太*, 齊藤匠, 山崎大志, 平野尚浩 2018. 山形県から新たに記録されたナタネキバサナギガイちりぼたん 48: 67–69.
11. 齊藤匠*, 秋山佳央, 山崎大志 2018. 奄美大島初記録のアラハダカノコちりぼたん 48: 29–32.
10. 齊藤匠*, 平野尚浩 2017. 滋賀県から新たに記録されたヒロマキミズマイマイちりぼたん 47: 83–86.
9. 平野尚浩*, 山崎大志, 大谷ジャーメンウィリアム, 亀田勇一, 内田翔太, 齊藤匠, 佐藤拓也 2017. トカラ列島宝島から新たに記録された陸産貝類 4 種ちりぼたん 47: 59–63.
8. 内田翔太*, 山崎大志, 齊藤匠, 平野尚浩, 森英章 2017. 琉球列島におけるニューギニアヤリガタリクウズムシの新たな侵入地 Fauna Ryukyuana 35: 1–4.
7. 齊藤匠*, 平野尚浩, 内田翔太, 山崎大志 2017. 西表島で確認されたヘゴノメミミガイ (真有肺目: オカミミガイ科) Molluscan diversity 5: 113–115.
6. 平野尚浩*, 内田翔太, 大谷ジャーメンウィリアム, 齊藤匠, 山崎大志, 和田慎一郎 2017. 南西諸島から新たに記録されたトガリオカクチキレ科 (腹足綱: アフリカマイマイ上科) Molluscan diversity 5: 83–85.
5. 齊藤匠*, 平野尚浩, 内田翔太, 山崎大志 2017. 石垣島および西表島におけるヒメヒラマキミズマイマイ (腹足綱: ヒラマキガイ科) の発見 Molluscan diversity 5: 79–82.
4. 福田宏*, 亀田勇一, 平野尚浩, 久保弘文, 早瀬善正, 齊藤匠 2017. 日本産クビキレガイ科 (新生腹足類: クビキレガイ上科) の再検討に向けて Molluscan diversity 5: 33–77.
3. 平野尚浩*, 亀田勇一, 福田宏, 齊藤匠, 内田翔太 2016. 本州・山口県から新たに記録されたツシマケマイマイ (腹足綱: 有肺類: ナンバンマイマイ科) の移入個体群ちりぼたん 45: 247–250.
2. 齊藤匠*, 内田翔太, 平野尚浩 2016. 宮城県から新たに記録された外来ヒラマキガイ科貝類 Menetus dilatatus (Gould, 1841) ちりぼたん 45: 247–250.
1. 齊藤匠* 2015. 東日本大震災後の宮城県で発見された絶滅危惧種ミズコハクガイ (腹足綱: ヒラマキガイ科) の新産地 Molluscan diversity 4: 50–53.

Books

5. 福田宏, 齊藤匠 2020. カワコザラ (他1種) In: 環境省自然環境局野生生物課希少種保全推進室（編）環境省レッドリスト２０２０補遺資料, 環境省自然環境局野生生物課希少種保全推進室, 千代田区, 39.
4. 齊藤匠, 福田宏 2020. ナデガタモノアラガイ（他6種） In: 岡山県野生動植物調査検討会（編）岡山県版レッドデータブック２０２０動物編), 岡山県環境文化部自然環境課, 岡山, 471.
3. 齊藤匠 2017. カワコザラ (他3種) In: 沖縄県環境部自然保護課（編）改訂・沖縄県の絶滅のおそれのある野生生物第3版 (動物編) ―レッドデータおきなわ―, 沖縄県環境部自然保護課, 那覇, 447.
2. 齊藤匠, 福田宏 2017. ヒメヒラマキミズマイマイ. In: 沖縄県環境部自然保護課（編）改訂・沖縄県の絶滅のおそれのある野生生物第3版 (動物編) ―レッドデータおきなわ―, 沖縄県環境部自然保護課, 那覇, 655-656.
1. 齊藤匠 2016. ミズコハクガイ (他1種) In: 宮城県稀少野生動植物保護対策検討会（編）宮城県の絶滅のおそれのある野生動植物 RED DATA BOOK MIYAGI 2016, 宮城県環境生活部自然保護課, 仙台, 387.

MISC

1. Saito T* Hirano T, Prozorova L, Do VT, Ye B, Shovon MS, Uchida S, Surenkhorloo P, Morii Y, Kimura K, Yamazaki D, Sasaki T, Tsunamoto Y, Satake K, Fukuda H, Suyama Y, Chiba S. 2022. Dispersal is a driver for the diversification of Gyraulus spp. on both continental and oceanic islands [Abstract for World Congress of Malacology 2022]. SPIXIANA Supplement 30A: 326.

Preprint [under review]

1. Pekelharing S, Nakadera Y, Saito T*, Koene JM. 2025. Differences in components of reproductive behaviour between populations at the simultaneously hermaphroditic snail Lymnaea stagnalis. bioRxiv: https://doi.org/10.1101/2025.06.11.658905