Molecular systematics and phylogeography of the gigantic earthworms of the Metaphire formosae species group (Clitellata, Megascolecidae)

Chih Han Chang, Si Min Lin, Jiun Hong Chen

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

The earthworms of the Metaphire formosae species group distributed in Taiwan are members of the Pheretima complex within the Megascolecidae. In this study, the systematics and phylogeography of this species group were investigated using DNA sequences of mitochondrial cytochrome c oxidase subunit I (COI), 16S ribosomal (r)RNA, and NADH dehydrogenase subunit 1 (ND1). The results indicated that the 13 taxa of the M. formosae species group form a clade, including a cryptic species discovered in this study. In addition, Metaphire hengchunensis (James, S.W., Shih, H.-T., Chang, H.-W., 2005. Seven new species of Amynthas (Clitellata: Megascolecidae) and new earthworm records from Taiwan. J. Nat. Hist. 39, 1007-1028) should be regarded as a subspecies of Metaphire paiwanna Tsai, C.-F., Shen, H.-P., Tsai, S.-C., 2000a. Native and exotic species of terrestrial earthworm (Oligochaeta) in Taiwan with reference to Northeast Asia. Zool. Stud. 39, 285-294, Tsai, C.-F., Tsai, S.-C., Liaw, G.-J., 2000b. Two new species of pontandric pheretimoid earthworms belonging to the genus Metaphire (Megascolecidae: Oligochaeta) from Taiwan. J. Nat. Hist. 34, 1731-1741, and Metaphire bununa glareosa Tsai et al. 2000 should be elevated to specific status. Phylogeographical inferences showed that allopatric speciation occurred in this species group during the rapid uplift of the main island of Taiwan between 5.0 and 2.5 million years ago. Our analysis exposes non-monophyly within each of the genera Amynthas and Metaphire, and more generally within the Pheretima complex. Further revisions of this speciose complex are urgently needed.

Original languageEnglish
Pages (from-to)958-968
Number of pages11
JournalMolecular Phylogenetics and Evolution
Volume49
Issue number3
DOIs
Publication statusPublished - 2008 Dec 1

Fingerprint

Megascolecidae
Phylogeography
Oligochaeta
molecular systematics
phylogeography
earthworms
earthworm
Taiwan
Pheretima
Amynthas
new species
allopatric speciation
NADH dehydrogenase
16S Ribosomal RNA
NADH Dehydrogenase
native species
cytochrome-c oxidase
subspecies
cytochrome
Electron Transport Complex IV

Keywords

  • Megascolecidae
  • Metaphire formosae species group
  • Pheretima complex
  • Phylogeography
  • Systematics

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Molecular Biology
  • Genetics

Cite this

Molecular systematics and phylogeography of the gigantic earthworms of the Metaphire formosae species group (Clitellata, Megascolecidae). / Chang, Chih Han; Lin, Si Min; Chen, Jiun Hong.

In: Molecular Phylogenetics and Evolution, Vol. 49, No. 3, 01.12.2008, p. 958-968.

Research output: Contribution to journalArticle

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