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- Title
Microtaxonomy of fragmenting Enchytraeus species using molecular markers, with a comment on species complexes in enchytraeids.
- Authors
Collado, Rut; Hass-Cordes, Eva; Schmelz, Rüdiger M.
- Abstract
Populations of Enchytraeus that reproduce by fragmentation are distributed worldwide, but their specieslevel taxonomy is unresolved because morphological differences are inconclusive. Th erefore, we compared the isozyme and RAPD-PCR patterns of 5 populations of fragmenting enchytraeids from widely distant localities (Japan, Iran, Greece, and Brazil). Among these populations, 3 were identifi ed (E. japonensis, E. bigeminus, and E. dudichi) and 2 were unidentified. Multiple isozyme bands suggested polyploidy in all investigated populations. In all RAPD-PCR algorithms except 1, the fragmenting group formed a cluster separate from 2 nonfragmenting Enchytraeus species. All 5 populations were clearly separable on the levels of protein and DNA, but the unidentifi ed Greek populations clustered more closely with E. japonensis. It remains unknown whether the fragmenting group in Enchytraeus is monophyletic or polyphyletic. Although every investigated population may deserve species rank, a consistent classification is impossible at present.
- Subjects
JAPAN; GENETIC markers; POLYMERASE chain reaction; CLITELLATA; OLIGOCHAETA; ISOENZYMES; POLYPLOIDY
- Publication
Turkish Journal of Zoology, 2012, Vol 36, Issue 1, p85
- ISSN
1300-0179
- Publication type
Article
- DOI
10.3906/zoo-1002-70