Abstract
I investigated geographic variation in the Japanese white-toothed shrewCrocidura dsinezumi (Temminck, 1842) (Insectivora, Soricidae) from the Japanese Archipelago and the northern part of the Ryukyu Archipelago. Univariate and multivariate analyses were conducted based on 11 cranial measurements from 14 sampling localities. Overall size variation seemed to follow clinal changes correlated with latitude and longitude of localities, such that northeastern populations were smaller than southwestern ones. The Hokkaido population and the Kuchinoerabujima population were larger than expected based on estimated values, likely due to changes reflecting environmental factors. In contrast, the Tanegashima population was smaller than its estimated value. The northern Ryukyu populations were divergent from the Kyushu population and from each other. Based on patterns of geographic variation, I suggest that all previously described subspecies ofC. dsinezumi are junior synonyms ofC. dsinezumi; and that the Kuchinoerabujima population and the Nakanoshima population likely represent un- described subspecies.
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References
Abe H. 1967. Classification and biology of Japanese Insectivora (Mammalia) I. Studies on variation and classification. Journal of the Faculty of Agriculture, Hokkaido University 55: 191–265.
Abe H., Saito T., Mano T., Udagawa T. and Ishibashi Y. 1987. Mammals in the surrounding areas of the Ohirayama Nature Conservation Area. [In: Conservation report of the Ohirayama Nature Conservation Area, Hokkaido, Japan]. Nature Conservation Bureau, Environment Agency of Japan, Tokyo: 215–229. [In Japanese with English summary]
Dobson M. 1994. Patterns of distribution in Japanese land mammals. Mammal Review 24: 91–111.
Felsenstein J. 1989. PHYLIP — Phylogeny inference package (version 3.2). Cladistics 5: 164–166.
Funakoshi K. 1998. Notes on the bats and shrews from the islands of Kuchinoerabujima, Yakushima and Tanegashima, Kagoshima Prefecture. Mammalian Science 38: 293–298. [In Japanese with English summary]
Hikida T. 1993. Phylogenetic relationships of the skinks of the genusEumeces (Scincidae: Reptilia) from East Asia. Japanese Journal of Herpetology 15: 1–21.
Hutterer R. 1993. Order Insectivora. [In: Mammal species of the World. 2nd ed. D. E. Wilson and D. M. Reeder, eds]. Smithsonian Institution Press, Washington: 69–130.
Imaizumi Y. 1970. The handbook of Japanese land mammals. vol 1. Shinshichosha, Tokyo: 1–350. [In Japanese with English summary]
Iwasa M. A., Ohdachi S., Han S. H., Oh H. S., Abe H. and Suzuki H. 2001. Karyotype and RFLP of the nuclear rDNA ofCrocidura sp. On Cheju Island, South Korea (Mammalia, Insectivora). Mammalia 65: 451–459.
Jiang X. L. and Hoffmann R. 2001. A revision of the white-toothed shrews (Crocidura) of southern China. Journal of Mammalogy 82: 1059–1079.
Kuroda N. 1924. On new mammals from the Riu Kiu Islands and the vicinity. Published by the author, Tokyo: 1–14.
Kuroda N. 1940. A monograph of the Japanese mammals. Sanseido, Tokyo: 1–311. [In Japanese]
Kuroda N. and Uchida T. 1959. A new form ofCrocidura suaveolens (Pallas) from Okinoshima, off northern Kyushu, in the Sea of Japan. Annotationes Zoologicae Japonenses 32: 43–46.
Motokawa M. 1999. Taxonomic history of the genusCrocidura (Insectivora: Soricidae) from Japan. [In: Recent advances in the biology on the Japanese Insectivora. Y. Yokohata and S. Nakamura, eds]. Hiba Society of Natural History, Shobara: 63–71.
Motokawa M., Hattori S., Ota H. and Hikida T. 1996. Geographic variation in the Watase’s shrewCrocidura watasei (Insectivora, Soricidae) from the Ryukyu Archipelago, Japan. Mammalia 60: 243–254.
Ohshima K. 1990. The history of straits around the Japanese Islands in the late-Quaternary. Quaternary Research, Tokyo 29: 193–208. [In Japanese with English summary]
Ota H. 1998. Geographic patterns of endemism and speciation in amphibians and reptiles of the Ryukyu Archipelago, Japan, with special reference to their paleogeographical implications. Researches on Population Ecology 40: 189–204.
Ota H., Miyaguni H. and Hikida T. 1999. Geographic variation in the endemic skink,Ateuchosaurus pellopleurus from the Ryukyu Archipelago. Journal of Herpetology 33: 106–118.
Ota H., Shiroma M. and Hikida T. 1995. Geographic variation in the endemic Ryukyu green snakeCyclophiops semicarinatus (Serpentes: Coluburidae). Journal of Herpetology 29: 44–50.
Patton J. L. and Brylski P. V. 1987. Pocket gophers in alfalfa fields: causes and consequences of habitat-related body size variation. The American Naturalist 130: 493–506.
Saitou N. and Nei M. 1987. The neighbor-joining method: a new method for reconstructing phylogenetic trees. Molecular Biology and Evolution 4: 406–425.
SAS. 1990. SAS/STAT user’s guide. Ver 6. SAS Institute Inc, Cary, North Carolina: 1–1686.
Smith M. F. and Patton J. L. 1988. Subspecies of pocket gophers: causal bases for geographic differentiation inThomomys bottae. Systematic Zoology 37: 163–178.
Takada Y., Sakai E., Uematsu Y. and Tateishi T. 1999. Distribution of small mammals on the Izu Islands. Bulletin of Biogeographical Society of Japan 54: 9–19. [In Japanese with English summary]
Temminck C. J. 1842–1844. Aperçu général et spécifique sur les mammiféres qui habitent le japon et les iles qui endépendent. [In: Fauna Japonica. P. F. de Siebold, C. J. Temminck and H. Schlegel, eds]. Arnz et Socii, Lugduni Batavorum: 1–59, pls 1–20.
Thomas O. 1906. The duke of Bedford’s zoological expedition in Eastern Asia. — I. List of mammals obtained by Mr. M. P. Anderson in Japan. Proceedings of the Zoological Society of London 1905: 331–363.
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Associate Editor was Leszek Rychlik.
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Motokawa, M. Geographic variation in the Japanese white-toothed shrewCrocidura dsinezumi . Acta Theriol 48, 145–156 (2003). https://doi.org/10.1007/BF03194154
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DOI: https://doi.org/10.1007/BF03194154