@article{oai:mie-u.repo.nii.ac.jp:00010311,
 author = {Kojima, Shigeaki and Kamimura, Satomi and Kimura, Taeko and Hayashi, Ikuo and Iijima, Akiko and Furota, Toshio},
 issue = {11},
 journal = {Zoological Science},
 month = {Nov},
 note = {application/pdf, Phylogenetic relationships between two sibling species of Japanese tideland snails, namely, Batillaria multiformistrom the Japanese lslands and L flectosiphonata from the Ryukyu lslands, were analyzed
on the basis.of the nucleotide sequences of the mitochondrial gene for cytochrome oxidase l. Populations of B. multiform.s were genetically distinct from those of B. flectosiphonata with the exception of a
population from Amami-Oshima lsland, which corresponded to the boundary between the distributions of these two species. Individuals with the mitochondrial gene of B. multiformis and those with the mitochondrial gene of B. flectosiphonata were collected from the same tidal flat on Amami-Oshima lsland. All the snails with the mitochondrial gene of B. multiforms could be divided into two genetically distinct groups
but there was no geographical structure to the distribution of these two groups. lndividual populations of B. flectosiphonatain the Amami, Okinawa, Miyako and Yaeyama insular groups each consisted exclusively of a unique set of haplotypes, with the exception of a population at a northern site on Okinawajima lsland, which included a few individuals with sequences related to those of individuals in the Amami insular group. All individuals from South Ryukyu formed a well-supported monophyletic group, while the monophyly of individuals from Central Ryukyu was not supported. The monophyly ol B. multiformis was clearly demonstrated but there was no evidence to support that of B. flectosiphonata. Batillaria multiformis might have been derived from immigrants from the Ryukyu lslands, which became isolated and diverged genetically on the Japanese lslands.},
 pages = {1423--1433},
 title = {Phylogenetic Relationships between the Tideland Snails Batillaria flectosiphonata in the Ryukyu Islands and B. multiformis in the Japanese lslands},
 volume = {20},
 year = {2003}
}