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Recently, numerous new species of Caridina weberi species group were described from around Polynesia. This study reports the molecular phylogenetic data of the Japanese specimens belonging to C. weberi species group based on the mitochondrial 16S rRNA and cytochrome c oxidase subunit I gene. The results suggested that C. laoagensis Blanco, 1939, C. macrodentata Cai & Shokita, 2006, C. multidentata Stimpson, 1860, C. prashadi Tiwari & Pillai, 1971 and C. tupaia de Mazancourt, Marquet & Keith, 2019 are distributed in Japan. This is the first record of C. tupaia on Ishigaki-jima Island, Ryukyu Archipelago, southern Japan and the northernmost record of this shrimp. Attempted to find C. okinawa, belonging to C. weberi species group, for the first time in about 50 years, but there were no Atyid shrimps in its type locality. Based on the data of mitochondrial DNA fragments, we suggest that if the divergence estimate in C. weberi species group exceed 3% for 16S rRNA, it may be an interspecific variation. We also reveal the existence of two unnamed species which had been identified as C. macrodentata and C. multidentata. Caridina multidentata is known to be distributed in Japan (type locality), Taiwan, Fiji and Madagascar, however East Asian and  Malagasy samples were shown to be distinct species, their divergence estimates were more than 10% for 16S rRNA. We also provide the key to the Japanese species of C. weberi species group.

References

  1. Blanco, G. J. (1939). Four new Philippine species of freshwater shrimps of the genus Caridina. Philippine Journal of Science, 70, 389–395.
     Google Scholar
  2. Cai, Y. (2010). Caridina jeani, a replacement name for Caridina typus var. brevirostris J. Roux, 1911 from Eastern Indonesia (Crustacea: Decapoda: Atyidae). Zootaxa, 2372, 80–84.
     Google Scholar
  3. Cai, Y., Ng, P. K. L., Shokita, S., & Satake, M. (2006). Revision of the Japanese atyid shrimps first described by William Stimpson, 1860. Journal of Crustacean Biology, 26, 392–419. https://doi.org/10.1651/C-2572.1.
     Google Scholar
  4. Cai, Y., & Shokita, S. (2006). Atyid shrimps (Crustacea: Decapoda: Caridea) of the Ryukyu Islands, southern Japan, with descriptions of two new species. Journal of Natural History, 40, 2123–2172. https://doi.org/10.1080/00222930601084049.
     Google Scholar
  5. Chace, F.A. Jr. (1997). The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition 1907-1910. Part 7: Families Atyidae, Eugonatonotidae, Rhynchocinetidae, Bathypalaemonellidae, Processidae, and Hippolytidae. Smithsonian Contributions to Zoology, 58, 1–106.
     Google Scholar
  6. de Mazancourt, V., Marquet, G., Klotz, W., Keith, P., & Castelin, M. (2017). When morphology and molecular work together: lines of evidence for the validity of Caridina buehleri Roux, 1934 (Crustacea: Decapoda: Atyidae) and for C. gueryi Marquet, Keith & Kalfatak, 2009 as its junior synonym. Invertebrate Systematics, 31, 220–230. https://doi.org/10.1071/IS16044.
     Google Scholar
  7. de Mazancourt, V., Klotz, W., Marquet, G., Mos, B., Rogers, D.C., & Keith, P. (2019a). The complex study of complexes: the first well-supported phylogeny of two species complexes within genus Caridina (Decapoda: Caridea: Atyidae) sheds light on evolution, biogeography, and habitat. Molecular Phylogenetics and Evolution, 131, 164–180. https://doi.org/10.1016/j.ympev.2018.11.002.
     Google Scholar
  8. de Mazancorut, V., Marquet, G., & Keith, P. (2019b). Revision of freshwater shrimps belonging to Caridina weberi complex (Crustacea: Decapoda: Atyidae) from Polynesia with discussion on their biogeography. Journal of Natural History, 53 (13-14), 815–847. https://doi.org/10.1080/00222933.2019.1612959.
     Google Scholar
  9. de Mazancorut, V., Boseto, D., Marquet, G., & Keith, P. (2020). Solomon’s Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species. European Journal of Taxonomy, 696: 1-86. https://doi.org/10.5852/ejt.2020.696.
     Google Scholar
  10. Dwiyanto, D., Annawaty, A., Farajallah, A., & Wowor, D. (2021). Short Note a preliminary survey of the freshwater shrimp genus Caridina from Eastern Sulawesi, Indonesia. Tropical Natural History, 21(2), 337–342.
     Google Scholar
  11. Edmondson, C. H. (1935). Atyidae of southern Polynesia. Bernice P. Bishop Museum Occasional Paper, 11(3).
     Google Scholar
  12. Fujino, T. & Shokita, S. (1975). Report on some atyid shrimps (Crustacea, Decapoda, Caridea) from the Ryukyus Islands. Bulletin of Science and Engineering Division, University of the Ryukyus (Mathmatics and Natural Science), 18, 93-113. http://hdl.handle.net/20.500.12000/23511.
     Google Scholar
  13. GBIF (2022, May 18). Caridina tupaia de Mazancourt, Marquet & Keith, 2019 collected in Philippines. https://www.gbif.org/occurrence/3113943639.
     Google Scholar
  14. Geller, J., Meyer, C., Parker, M., & Hawk, H. (2013). Redesign of PCR primers for mitochondrial cytochrome c oxidase subunit I for marine invertebrates and application in all-taxa biotic surveys. Molecular Ecology Resources, 13 (5), 851–861. https://doi.org/10.1111/1755-0998.12138.
     Google Scholar
  15. Imai, H., Cheng, J. H., Hamasaki, K., & Numachi, K. (2004). Identification of four mud crab species (genus Scylla) using ITS-1 and 16S rDNA makers. Aquatic Living Resources, 17, 31–34. https://doi.org/10.1051/ALR%3A2004007.
     Google Scholar
  16. ITIS (2022, June 20). Caridina H. Milne Edwards, 1837. https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=97253#null.
     Google Scholar
  17. Katoh, K., & Standley, D. M. (2013). MAFFT multiple sequence alignment software version 7: improvements in performance and usability. Molecular and Biology and Evolution, 30, 772–780. https://doi.org/10.1093/molbev/mst010.
     Google Scholar
  18. Kumar, S., Stecher, G., Li, M., Knyaz, C., & Tamura, K. (2018). MEGA X: Molecular Evolutionary Genetics Analysis across Computing Platforms. Molecular and Biology and Evolution, 35 (6), 1547–1549. https://doi.org/10.1093%2Fmolbev%2Fmsy096.
     Google Scholar
  19. Liu, M. Y., Cai, Y. X., & Tzeng, C. S. (2007). Molecular systematics of the freshwater prawn genus Macrobrachium Bate, 1868 (Crustacea: Decapoda: Palaemonidae) Inferred from mtDNA sequences, with emphasis on East Asian species. Zoological Studies, 46(3), 272–289.
     Google Scholar
  20. Maruyama, T., & Fuke, Y. (2018). First records of Caridina macrodentata from Okinawa-jima Island. Fauna Ryukyuana, 43, 11-17. Japanese with English abstract. http://hdl.handle.net/20.500.12000/42386.
     Google Scholar
  21. Nylander, J. A. A. (2004). MrModeltest v2. Program distributed by the author. Uppsala, Sweden: Evolutionary Biology Centre, Uppsala University, 2 pp.
     Google Scholar
  22. Oshiro, A., Sumi, T., & Imai, H. (2022). Identification of fish species involved with ciguatera fish poisoning in Okinawa waters by using phylogenetic analysis. Nippon Suisan Gakkaishi, 88(4), 271–283. Japanese with English abstract. https://doi.org/10.2331/suisan.21-00049.
     Google Scholar
  23. Page, T. J., von Rintelen, K., & Hughes, J. M. (2007). An island in the stream: Australia’s place in the cosmopolitan world of Indo-West Pacific freshwater shrimp (Decapoda: Atyidae: Caridina). Molecular Phylogenetics and Evolution, 43, 645–659. https://doi.org/10.1016/j.ympev.2006.08.007.
     Google Scholar
  24. Palumbi, S.R., Martin, A., Romano, S., McMillan, W. O., Stice, L., & Grabowski, G. (2002). The simple fool’s guide to PCR version 2. Department of Zoology and Kewalo Marine Laboratory, University of Hawaii, 45 pp.
     Google Scholar
  25. Ronquist, F., Teslenko, M., Mark, P. V. D., Ayres, D. L., Darling, A., Höhna, S., et al. (2012). MrBayes 3.2: Efficient Bayesian Phylogenetic Inference and Model Choice Across a Large Model Space. Systematic Biology, 61 (3), 539–542. http://dx.doi.org/10.1093/sysbio/sys029.
     Google Scholar
  26. Shokita, S. (1979). The distribution and speciation of the inland water shrimps and prawns from the Ryukyu Islands. II. Bulletin of the College of Science, University of the Ryukyus, 28, 193–278. Japanese with English abstract.
     Google Scholar
  27. Shokita, S. (2003). Atyidae. In: Nishida, M., Shikatani, N., & Shokita, S. (eds.), The flora and fauna of inland waters in the Ryukyu Islands (pp.249-254). Tokyo: Tokai University Press. Japanese.
     Google Scholar
  28. Shikita, S. (2019). Life history of freshwater shrimps. Tokyo: Shokita Shigemitsu memorial Press. Japanese.
     Google Scholar
  29. Soomo, A. N., Suzuki, H., Kitazaki, M., & Kobari, T. (2010). Species composition of freshwater shrimp in Kikai-jima Island, southern Japan. Journal of Crustacean Biology, 30(4), 721–726. https://doi.org/10.1651/09-3208.1.
     Google Scholar
  30. Soomo, A. N., Suzuki, H., Kitazaki, M., & Yamamoto, T. (2011). Reproductive aspects of two atyid shrimp Caridina sakishimensis and Caridina typus in head water streams of Kikai-jima Island, Japan. Journal of Crustacean Biology, 31(1), 41–49. https://doi.org/10.1651/10-3329.1.
     Google Scholar
  31. Soomo, A. N., Suzuki, H., Nagae, M., Malik, S., & Baloch, W. A. (2013). Habitat use by two atyid shrimps Caridina sakishimensis and Caridina typus in Urabaru stream, Kikai-jima Island. Sindh University research journal (science series), 45 (1), 49–52.
     Google Scholar
  32. Soomo, A. N., Suzuki, H., Qureshi, S. T., & Baloch, W. A. (2020). Migration of two atyid shrimps, Caridina sakishimensis (Fujino and Shokita, 1976) and Caridina typus (H. Millne Edwards, 1937) in Urabaru, Kikai-jima Island, Southern Japan. Pakistan journal of zoology, 52(4), 1333–1340. https://dx.doi.org/10.17582/journal.pjz/20181207061204.
     Google Scholar
  33. Suzuki, H., Tatsuno, K., & Take, M. (2011). On the freshwater Crustacean Decapods in Yoron Island, Kagoshima Prefecture. Nature of Kagoshima, 37, 63–65. Japanese. http://hdl.handle.net/10232/18100.
     Google Scholar
  34. Tiwari, K. K, & Pillai, R. S. (1971). Atyid shrimps of the genus Caridina H. Milne Edwards, 1837, from the Andaman Islands (Decapoda, Caridea). Crustaceana, 21, 79–91.
     Google Scholar
  35. Toyota, K., & Seki, S. (2014). Freshwater Shrimps and Crabs of Japan: 102 Species from Brackish and Fresh Waters. Tokyo: Seibundo Shinkosha. Japanese.
     Google Scholar