Systematics of the Sheath Nematodes of the Superfamily Hemicycliophoroidea

Chitambar, John J.; Subbotin, Sergei A.

doi:10.1163/9789004187894

Cited by 16 publications

(38 citation statements)

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“…Distinguishing characters of this species include a loosely fitting cuticular sheath, lateral fields marked only by anastomoses or breaks in the striae occasionally forming a faint line, and the absence of males. Hemicycliophora ripa is distinguished from the morphologically similar species H. subaolica , Hemicycliophora popaensis Van den Berg & Tiedt, 2005, and Hemicycliophora catarinensis Costa‐Manso, (Chitambar & Subbotin, ).…”

Section: Resultsmentioning

confidence: 83%

“…Distinguishing characters of this species include lateral fields with breaks or anastomoses, an offset tail end, and the absence of males. Hemicycliophora thienemanni is differentiated from the morphologically similar species H. thornei , H. poranga , Hemicycliophora indica Siddiqi, 1961, and Hemicycliophora postamphidia Rahaman, Ahmad & Jairajpuri, 1966 (Chitambar & Subbotin, ).…”

Section: Resultsmentioning

confidence: 99%

“…Distinguishing characters of this species include a truncate lip region with two or three annuli, lateral fields marked mostly by breaks of striae, an elongate conoid tail tapering to a distal offset and narrower elongated portion with a narrowly rounded terminus, and the absence of males. Hemicycliophora vaccinii is differentiated from the morphologically similar species Hemicycliophora nucleata Loof, , H. zuckermani , Hemicycliophora mettleri Jenkin & Reed, 1964, and H. similis (Chitambar & Subbotin, ).…”

Section: Resultsmentioning

confidence: 99%

“…Distinguishing characters of this species include a long body (1.2-1.5 mm) and stylet (111-132 μm), posterior part of tail distinctly offset with a spicate terminus, and presence of males. Hemicycliophora gracilis is differentiated from the morphologically similar species Hemicycliophora litorea Van den Berg, 1988 (Chitambar & Subbotin, 2014).…”

Section: Hemicycliophora Epicharoidesmentioning

confidence: 99%

“…Because of the presence of a cuticular sheath, these nematodes received the common name of 'sheath nematodes'. Presently the genus Hemicycliophora contains 132 valid species (Chitambar & Subbotin, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Molecular phylogeny, diagnostics, and diversity of plant-parasitic nematodes of the genusHemicycliophora(Nematoda: Hemicycliophoridae)

et al. 2014

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The genus Hemicycliophora (Nematoda: Hemicycliophoridae) contains 132 valid species of plant‐parasitic nematodes, collectively known as ‘sheath nematodes’. Hemicycliophora spp. are characterized morphologically by a long stylet with rounded basal knobs and a cuticular sheath, present in juvenile and adult stages. Populations of 20 valid and 14 putative species of Hemicycliophora and Loofia from several countries were characterized morphologically using light (LM) and scanning electron microscopy (SEM) and molecularly using the D2‐D3 segments of 28S rRNA and internal transcribed spacer (ITS) rRNA gene sequences. LM and SEM observations provided new details on the morphology of these species. PCR‐restriction fragment length polymorphisms (PCR‐RFLPs) of the D2‐D3 of 28S rDNA were proposed for identification of the species. Phylogenetic relationships within populations of 36 species of the genus Hemicycliophora using 102 D2‐D3 of 28S rDNA and 97 ITS rRNA gene sequences as inferred from Bayesian analysis are reconstructed and discussed. Ancestral state reconstructions of diagnostic characters (body and stylet length, number of body annuli, shape of vulval lip and tail), using maximum parsimony and Bayesian inference, revealed that none of the traits are individually reliable characters for classifying the studied sheath nematode. The Shimodaira–Hasegawa test rejected the validity of the genus Loofia. This is the most complete phylogenetic analysis of Hemicycliophora species conducted so far. © 2014 The Linnean Society of London

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Hemicycliophora Epicharoidesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Molecular phylogeny, diagnostics, and diversity of plant-parasitic nematodes of the genusHemicycliophora(Nematoda: Hemicycliophoridae)

et al. 2014

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New records of plant-parasitic nematodes from Iceland

et al. 2020

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The plant-parasitic nematodes of Iceland are poorly understood. To address this, a study of the nematodes of the families Criconematidae and Hemicycliophoridae was performed in 2015. Soil samples were taken from underneath various host plants in different locations in Iceland. The identification was performed on the basis of the general morphology and subsequently confirmed by molecular markers (D2-D3 28S rDNA). The study revealed the presence of nematode specimens belonging to four species of the family Criconematidae: Criconemoides amorphus, Criconema demani, Mesocriconema xenoplax and Mesocriconema curvatum, as well as one species Hemicycliophora conida of the family Hemicycliophoridae. To our knowledge, this is the first record of the occurrence of these nematode species in Iceland. The species identified are economically important plant-parasitic nematodes of likely interest to—among others—Icelandic plant protection professionals. This report broadens our knowledge of Iceland’s nematode biodiversity; moreover, morphological analyses and molecular data may contribute to better understanding the origin of nematode species on the island of Iceland.

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Morphological and molecular characterisation of Hemicaloosia guangzhouensis n. sp. (Nematoda: Caloosiidae) from China

Wang

Xie

et al. 2015

Eur J Plant Pathol

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Systematics of the Sheath Nematodes of the Superfamily Hemicycliophoroidea

Cited by 16 publications

References 0 publications

Molecular phylogeny, diagnostics, and diversity of plant-parasitic nematodes of the genusHemicycliophora(Nematoda: Hemicycliophoridae)

Molecular phylogeny, diagnostics, and diversity of plant-parasitic nematodes of the genusHemicycliophora(Nematoda: Hemicycliophoridae)

New records of plant-parasitic nematodes from Iceland

Morphological and molecular characterisation of Hemicaloosia guangzhouensis n. sp. (Nematoda: Caloosiidae) from China

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