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The taxonomic position of some teratocephalid nematodes - a scanning electron microscope study
Responsible organisation
1989 (English)In: Revue Nématol., Vol. 12, no 2, 181-190 p.Article in journal (Refereed)
Abstract [en]
Four teratocephalid species, viz. Metateratocephalus crassidens, Teratocephalus costatus, T. lirellus and T. terrestris, were studied by SEM, which provided additional information on anterior organization and external morphology. Al1 species have six leaf-like lips, separated by incisures about half the lip length in M. crassidens and by deep incisures almost the whole lip length in Teratocephalus, supported by strongly sclerotized margins.I n M. crassidens subdorsal and subventral lips beatrw o setiform sensilla each, lateral lips only oneI.n Teratocephalus subdorsal and subventral lips bear a single setiform sensilluamt t he base. The weakly annulated and minutely punctated cuticle of M. crassidens has scattered pores anteriorly and pores posteriorly along both sides of the lateral fields, which are coarsely punctated anteriorly and consist of expanded cuticle from Imn idTberoadtyo.c ephalus lateral fields are demarcated btyw o incisuresand usually distinctly offsTeht.e possible plesiomorphic or apomorphic state of some external characters are discussed and in the light of this the taxonomic position of the teratocephalids.
Place, publisher, year, edition, pages
1989. Vol. 12, no 2, 181-190 p.
Keyword [en]
theratocephalid nematodes, Metateratocephalus crassidens, Teratocephalus costatus, T. lirellus, T. terrestrisArctic, Spitzbergen
Identifiers
URN: urn:nbn:se:polar:diva-242OAI: oai:DiVA.org:polar-242DiVA: diva2:568373
Note

Source: Polardok by Swedish Polar Research Secretariat

Available from: 2012-11-15 Created: 2012-11-15 Last updated: 2012-11-15

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