Publications

Original articles (peer reviewed)

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: in press.

Hirano T.*, Ito S., Matsuo A., Yamazaki D., Saito T., Kagawa O., Uchida S., Kameda Y., Suyama Y., Sano K., Chiba S. (2026).

Autapomorphic giantism associated with vicariance: a test of the island rule.

Journal of Biogeography, 53, e70229.

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, 39, 412–422.

Kagawa O.* (2025)

Host specificity of a chiton-associated flatworm based on field and laboratory observations

Journal of the Marine Biological Association of the United Kingdom, 105, e126

Kagawa O.*, Ito H., Nakajima N., Fukumori H*. (2025). [Co-corresponding author]

Phylogenetic history of the acquisition of molluscan hosts in acotylean flatworms

Biology Letters, 21, 4.

Kagawa O.*, Hirota SK., Hirano T., Kimura K., Kobayashi G., Suyama Y., Chiba S., Yamazaki D. (2024).

The population structure and demography of an intertidal gastropod Lunella correensis around the Japanese Archipelago affected by past environmental change.

Marine Biology, 171, 177.

Kagawa O.*, Do T. V., Hanyuda T., Chiba S., Yamazaki D. (2024).

Southernmost record of an epibiotic alga Pseudocladophora conchopheria (Sakai) Boedeker & Leliaert (Cladophorales, Ulvophyceae) with insights into the geographical dispersal and host utilization.

Marine Biodiversity, 54, 47.

Kagawa O.*, Ishii Y., Fujimoto K., Kimura K., Chiba S., Ito S. (2024).

Community composition and diversity of land snails along an elevation gradient in the World Natural Heritage Site, Yakushima Island.

Global Ecology and Conservation, 50, e02746.

Chiba M.*, Yamazaki D., Ito S., Kagawa O., Chiba S. (2024).

Secondary contact of two cryptic Hokou gecko groups in the Izu Islands, Japan.

Mitochondrial DNA Part A, 33, 53–60.

Sakata W*., Tatani M., Chiba S., Kagawa O.* (2023). [Co-corresponding author]

Host preference of a symbiotic flatworm and its response to conspecific and host mucus.

Journal of Ethology, 42, 53–59.

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, 721–731.

Ito S.*, Yamazaki D., Kameda Y., Kagawa O., Ye B., Saito T., Kimura K., Chiba S., Hirano T. (2023).

Taxonomic insights and evolutionary history in East Asian terrestrial slugs of the genus Meghimatium.

Molecular Phylogenetics and Evolution, 182, 107730.

Saito T.*, Fujimoto K., Uchida S., Yamazaki D., Hirano T., Sano I., Ye B., Kagawa O., Shariar M.S., 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.

Kudo K.*, Kagawa O., Ito S., Wada S., Nishi H., Shariar SM., Yamazaki D., Hirano T., Chiba S. (2022).

Species identification and invasion pathways of an introduced snail Macrochlamys sp. Japan.

Bioinvasions Records, 11, 839–854.

Hirano T.*, Kagawa O., Fujimoto M., Saito　T., Uchida S., Yamazaki D., Ito S., Shariar S.M., Sawahata T., Chiba S. (2022).

Species identification of introduced veronicellid slugs in Japan.

PeerJ, 10, e13197.

Chiba M.*, Hirano T., Yamazaki D., Ye B., Ito S., Kagawa O., Endo K., Nishida S., Hara S., Aratake K., Chiba S. (2022)

The mutual history of Schlegel’s Japanese gecko (Reptilia: Squamata: Gekkonidae) and humans inscribed in genes and ancient literature.

PNAS nexus, 1, pgac245.

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.

Kagawa O.*, Uchida S., Yamazaki D., Osawa Y., Ito S., Chiba S., The green-costumed snail’s citizen researchers (2020).

Citizen science via social media revealed conditions of symbiosis between a marine gastropod and an epibiotic alga.

Scientific Reports, 10, 19647.

Kagawa O.*, Saito T., Uchida S., Chiba S. (2019).

Phenotypic divergence in viviparid snails in a recently converted freshwater lagoon.

Plankton and Benthos Research, 14, 189-196.

Kagawa O.*, Chiba S. (2019).

Snails wearing green heatproof suits: the benefits of algae growing on the shells of an intertidal gastropod.

Journal of Zoology, 307, 256-263.

メディア報道 New Scientists 2019年1月.

Tatara Y.*, Hamada K., Urabe M., & Biology Club of Kojo High School (Sonohara T.,Kagawa O.) (2014).

Across-population variation in sex ratio in invasive Japanese Potamopyrgus antipodarum (Caenogastropoda: Rissooidea: Hydrobiidae).

Limnology, 15, 185-190.

Hamada K.*, Tatara Y., Urabe M., & Biology Club of Kojo High School (Sonohara T., Kagawa O.) (2013).

Survey of mitochondrial DNA haplotypes of Potamopyrgus antipodarum (Caenogastropoda: Hydrobiidae) introduced into Japan.

Limnology, 14, 223-228.