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Hirschmanniella kwazuna sp. n. from South Africa with notes on a new record of H. spinicaudata (Schuurmans Stekhoven, 1944) Luc & Goodey, 1964 (Nematoda: Pratylenchidae) and on the molecular phylogeny of Hirschmanniella Luc & Goodey, 1964

Permanent URL:
http://handle.nal.usda.gov/10113/42566
Abstract:
A new species of the genus Hirschmanniella, H. kwazuna sp. n., is described from unidentified grass growing in undisturbed veldt from South Africa. Hirschmanniella kwazuna sp. n. is characterised by having a very irregular heat-relaxed body posture, body 1522-2049 μm long, lip region low and rounded with four or five lip annuli, stylet 18-22.5 μm long, lateral field areolated along entire body, spermatheca filled with sperm, tail with 62-81 ventral annuli narrowing to a tip bearing a ventral mucro, angular crystal-like inclusions within body cavity in most of the specimens and phasmid situated 12-24 annuli or 15-26 μm anterior to tail tip. Males, like females, have crystal-like inclusions with the tail curved strongly dorsad in most specimens. Juveniles are similar to females. Molecular sequence analysis using the D2-D3 expansion segments of 28S, partial 18S and ITS rRNA sequences distinguished H. kwazuna sp. n. from H. loofi and other species of the genus. Hirschmanniella spinicaudata is reported from South Africa for the first time and described. Phylogenetic analyses based on analysis of the D2-D3, 18S and ITS rRNA genes are given for eight, ten and five valid and unidentified Hirschmanniella species, respectively.
Author(s):
Van den Berg, Esther , Subbotin, Sergei A. , Handoo, Zafar A. , Tiedt, Louwrens R.
Subject(s):
Hirschmanniella , new species , taxonomy , animal morphology , new geographic records , molecular systematics , ribosomal RNA , genes , nucleotide sequences , phylogeny , internal transcribed spacers , polymerase chain reaction , restriction fragment length polymorphism , wetland soils , South Africa
Format:
p. 523-540.
Note:
Includes references
Source:
Nematology : international journal of fundamental and applied nematological research 2009, v. 11, no. 4
Language:
English
Year:
2009
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
File:
Download [PDF File]
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.