| Description of Three Pristionchus Species (Nematoda: Diplogastridae) from Japan that Form a Cryptic Species Complex with the Model Organism P. pacificus. | |
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MedLine Citation:
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PMID: 22639812 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Three new species of Pristionchus (P. exspectatus, P. arcanus, and P. japonicus) are described from Japan. They are morphologically similar, with P. exspectatus and P. arcanus being almost indistinguishable from the model organism P. pacificus. Reproductive isolation, namely the inability to produce interfertile F1 hybrids, separates all species pairs in the species complex. Additionally, all three new species are distinguished from P. pacificus Sommer, Carta, Kim, and Sternberg, 1996 by having a gonochoristic instead of hermaphroditic mode of reproduction. In addition to its reproductive isolation, P. japonicus is distinct from other Pristionchus species by its arrangement of genital papillae. All species in the complex are separated from each other by molecular sequence divergence, as indicated by analysis of 27 nuclear protein-coding genes and unique sequences of the small subunit ribosomal RNA gene. The identification of a species complex that includes P. pacificus is invaluable for studies of population genetics, speciation, and macroevolution, particularly the evolution of hermaphroditism in the genus. |
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Authors:
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Natsumi Kanzaki; Erik J Ragsdale; Matthias Herrmann; Werner E Mayer; Ralf J Sommer |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Zoological science Volume: 29 ISSN: 0289-0003 ISO Abbreviation: Zool. Sci. Publication Date: 2012 Jun |
Date Detail:
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Created Date: 2012-05-29 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8702287 Medline TA: Zoolog Sci Country: Japan |
Other Details:
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Languages: eng Pagination: 403-17 Citation Subset: IM |
Affiliation:
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1 Forest Pathology Laboratory, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki 305-8687, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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