Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/70797
DC FieldValueLanguage
dc.contributor.authorChen, D.Y.en_US
dc.contributor.authorNi, H.F.en_US
dc.contributor.authorYen, J.H.en_US
dc.contributor.authorCheng, Y.H.en_US
dc.contributor.authorTsay, T.T.en_US
dc.date2005zh_TW
dc.date.accessioned2014-06-11T06:00:22Z-
dc.date.available2014-06-11T06:00:22Z-
dc.identifier.issn1388-5545zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/70797-
dc.description.abstractMorphometrics and molecular variability of the X. americamun-group collected in Taiwan were studied. Morphometric data, derived from the females and their developing juveniles, revealed that the 27 populations comprised four taxa: X. brevicollum, X. incognitum, X. diffusum and X. oxycaudatum, the last species being found to have only three juvenile stages. Further identifications were conducted by analysing the nucleotide sequences of the first internal transcribed spacer (ITS-1), 5.8S gene and second internal transcribed spacer (ITS-2) of ribosomal DNA (rDNA). Pairwise comparisons revealed the sequence differences among these taxa ranging from 3.5 to 21.8% for the ITS-1, 2.9 to 28.6% for the ITS-2 and 0 to 3.1% for the 5.8S. Little or no intraspecific variation was detected in the four species for which multiple populations from different geographical regions or hosts were sequenced. Although X. incognitum is morphometrically closer to X. diffusum than it is to X. brevicollum in mean body length, total stylet length, and percentage position of vulva, there is a higher degree of genetic similarity between X. incognitum and X. brevicollum.en_US
dc.language.isoen_USzh_TW
dc.relationNematologyen_US
dc.relation.ispartofseriesNematology, Volume 7, Page(s) 713-725.en_US
dc.relation.urihttp://dx.doi.org/10.1163/156854105775142937en_US
dc.subjectidentificationen_US
dc.subjectinternal transcribed spaceren_US
dc.subjectinterspecific variationen_US
dc.subjectintraspecific variationen_US
dc.subjectjuvenile stageen_US
dc.subjectmolecularen_US
dc.subjectmorphometricsen_US
dc.subjectinternal transcribed spaceren_US
dc.subjectfragment-length-polymorphismen_US
dc.subjecttrichostrongylus nematodaen_US
dc.subjectlongidoridaeen_US
dc.subjectidentificationen_US
dc.subjectregionen_US
dc.titleDifferentiation of the Xiphinema americanum-group nematodes X-brevicollum, X-incognitum, X-diffasum and X-oxycaudatum in Taiwan by morphometrics and nuclear ribosomal DNA sequencesen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1163/156854105775142937zh_TW
item.grantfulltextnone-
item.openairetypeJournal Article-
item.languageiso639-1en_US-
item.fulltextno fulltext-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
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