title: The introduction to Japan of the Titan barnacle, Megabalanus coccopoma (Darwin, 1854) (Cirripedia: Balanomorpha) and the role of shipping in its translocation.
abstract: The Titan Acorn barnacle, Megabalanus coccopoma, a native of the tropical eastern Pacific, has become established in the western Atlantic (Brazil and the northern Gulf of Mexico to the Carolinas), northwestern Europe and the western Indian Ocean (Mauritius), and therefore its dispersal capabilities are well known. This study reports its introduction to Japan and confirms its occurrence in Australia. In an attempt to determine the source of this introduction, phylogeographic techniques, involving cytochrome c oxidase I sequences of various widely separate populations of M. rosa and M. volcano, were utilized. No significant genetic differentiation or haplotype patterns between widely separated populations of each of the three species were found. Lack of such differentiation indicates recent geographical isolation and thus negates a null hypothesis predicting that the occurrence of one of more of these species in Australia was natural.
authors.affiliation: Department of Earth Sciences, Graduate School of Science, Chiba University, Chiba, Japan. tyamaguc@earth.s.chiba-u.ac.jp
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: Romanus Edy
authors.initials: RE
authors.lastname: Prabowo
authors.forename: Yuu
authors.initials: Y
authors.lastname: Ohshiro
authors.forename: Takaki
authors.initials: T
authors.lastname: Shimono
authors.forename: Diana
authors.initials: D
authors.lastname: Jones
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kawai
authors.forename: Michio
authors.initials: M
authors.lastname: Otani
authors.forename: Akio
authors.initials: A
authors.lastname: Oshino
authors.forename: Shou
authors.initials: S
authors.lastname: Inagawa
authors.forename: Tomoyoshi
authors.initials: T
authors.lastname: Akaya
authors.forename: Itsuro
authors.initials: I
authors.lastname: Tamura
mesh_terms: D000818:Animals; D001315:Australia; D018441:Biofilms / Q000254:growth & development; D004272:DNA, Mitochondrial / Q000235:genetics; D003576:Electron Transport Complex IV / Q000235:genetics; D005828:Genetics, Population; D006239:Haplotypes; D007564:Japan; D008928:Mitochondria / Q000201:enzymology; D010802:Phylogeny; D017422:Sequence Analysis, DNA; D012767:Ships; D013045:Species Specificity; D001468:Thoracica / Q000145:classification* / Q000235:genetics / Q000502:physiology*
chemical_list: D004272:DNA, Mitochondrial; D003576:Electron Transport Complex IV