Papers by Wilfrida Decraemer
Journal of Nematology, 2019
During a survey in the Botanical garden of Ghent University, a new species Rotylenchus rhomboides... more During a survey in the Botanical garden of Ghent University, a new species Rotylenchus rhomboides n. sp. and a population of Rotylenchus buxophilus were found. Rotylenchus rhomboides n. sp. is characterized by the presence of a rhomboid-like widening of the mid-ridge of lateral field at the level of vulva, a feature previously unknown within the genus. The population of the new species, composed only by females, has a rounded labial region with 4 to 5 annuli, robust stylet (31–37 μm long), short dorsal esophageal gland (9–19 μm) overlap of the intestine, vulva located slightly posterior to mid-body, and hemispherical or rounded tail shape with large phasmids located 3 to 5 annuli anterior to the level of anus. The hierarchical cluster analysis based on morphological features indicated that the new species closely resembles R. corsicus, R. gracilidens, and R. rugatocuticulatus. The DNA analyses of the D2-D3 of 28S rDNA, ITS rDNA, and COI mtDNA sequences of Rotylenchus rhomboides n. s...
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Journal of Helminthology, 2019
A survey for slug-associated nematodes in five locations of East and West Flanders in Belgium rev... more A survey for slug-associated nematodes in five locations of East and West Flanders in Belgium revealed the presence of one new and six known slug-parasitic nematodes,Agfa flexilis(Dujardin, 1845),Alloionema appendiculatum(Schneider, 1859),Angiostoma dentiferum(Mengert, 1953),Angiostoma limacis(Dujardin, 1845),Angiostoma norvegicum(Rosset al., 2017) andPhasmarhabditis hermaphrodita(Schneider, 1859).Angiostoma norvegicumandP.hermaphroditaare recorded for the first time in Belgium. The six known species are documented by light microscopy (LM) microphotographs and informative DNA sequences.Angiostoma gandavensisn. sp. (Angiostomatidae), discovered from arionid slugs, is described based on light microscopy, scanning electron microscopy (SEM) and molecular data. Based on analyses of D2D3 expansion segment of 28S and 18S rDNA sequences, this new species is found to be related toA.limacis,A.norvegicum,A.margaretae(Rosset al., 2011) andA.milacis(Ivanova and Wilson, 2009). The new species can...
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Ocean Science Journal, Sep 1, 2016
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Russian Journal of Nematology, 2008
A new species of Xiphinema from north western Iran is described herein. Xiphinema robbinsi sp. n.... more A new species of Xiphinema from north western Iran is described herein. Xiphinema robbinsi sp. n. is characterized by its body length (3-3.8 mm), anterior end broadly rounded with a marked depression and high labial region, medium-sized odontostyle length (107.5-127 mu m), females with two equally developed genital branches with well developed ovijector and spines ill tubular part of uterus, a short convex-conoid tail, abundant males in population and four juvenile stages. The new species most closely resembles X aceri Chizhov, Tiev & Turkina, 1986, X. aequum Roca & Lamberti, 1988, Xipinema riparia Chizhov, Subbotin, Romanenko & Kruchina, 1991 and X macedonicum Barsi & Lamberti, 1999 and belongs to species group 6 of the polytomous key of Loof & Luc (1990).
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Phylogenetic analysis and ancestral state reconstruction revealed that Pratylenchidae evolved at ... more Phylogenetic analysis and ancestral state reconstruction revealed that Pratylenchidae evolved at least four times independently, but always from migratory ectoparasitic ancestors. The inclusion of the burrowing endoparasitic nematodes in a single family Pratylenchidae is classically defined by a context of similar morphological character sets that are likely the result of convergent evolution related to similar feeding modes. Morphological uniformity is especially striking within the genus Pratylenchus, and this in combination with overlapping morphometrical characters hampers species delineation within this genus. Pratylenchus araucensis n. sp., a new root-lesion nematode associated with Musa plants in Colombia, is described using a combination of morphological and molecular data. Our results fill the requirements of evolutionary species concept (a species forms a separate lineage or separate clade) and phylogenetic species concept (a lineage can be characterized by autapomorphies). We discuss the theoretical foundation and the practical application of this approach.
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Fundamental and applied nematology, 1996
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Australasian Plant Pathology, 1991
During a survey of plant parasitic nematodes associated with native vegetation in Australia, two ... more During a survey of plant parasitic nematodes associated with native vegetation in Australia, two new species of Paratrichodorus were found. Paratrichodorus orrae n.sp. was collected from Eucalyptus woodland and P. queens landensis n.sp. from tropical rainforest, both closely resem bling P. grandis. Paratrichodorus lobatus and the closely related P. teres are studied and the six trichodorid spe cies recorded in Australia are listed.
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Nematology, 2012
Xiphinema zagrosense sp. n. is described based on morphological and molecular characters. The new... more Xiphinema zagrosense sp. n. is described based on morphological and molecular characters. The new species belongs to morphospecies group 6 characterised by having two equally developed female genital branches with spines in uterus and a short, rounded tail. The new species is characterised by having spines in the tubular part of the uterus, body length 3.8-5.0 mm, odontostyle length 151-169 μm, odontophore 94-105 μm, conical, dorsally convex tail, four juvenile stages and absence of males. The new species appears closely related to the members of X. pyrenaicum group characterised by a rounded tail with or without an inconspicuous digitate end and a uterus devoid of Z-differentiation but showing spiniform structures. It is compared with X. aceri, X. adenohystherum, X. iranicum, X. mazandaranense, X. nuragicum, X. pyrenaicum, X. robbinsi, X. sphaerocephalum and X. vuittenezi. In addition to morphological and morphometric data, molecular analyses of the near-full-length small subunit rDNA gene (SSU) and large subunit rDNA gene (LSU) D2/D3 placed the new species in close relation with some species belonging to Xiphinema group 6 but differs from other species in the X. pyrenaicum complex.
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Nematologia Mediterranea, Dec 15, 2012
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Nematology, 2012
Xiphinema mazandaranense n. sp. is described and illustrated. The new species belongs to morphosp... more Xiphinema mazandaranense n. sp. is described and illustrated. The new species belongs to morphospecies group 6, which is characterised by having two equally developed female genital branches that have spines in the uteri and a short, rounded tail. The new species is characterised by having spines in the tubular portion of the uterus, body 3.7-5.2 mm long, odontostyle 163-173 μm long, odontophore 96-100 μm long, body 62-80 μm diam., rounded tail, four juvenile stages, males rare with three ventromedian supplements next to the adcloacal pair and spicules 85 μm long. The polytomous identification codes of the new species are: A4-B3-C7b-D6-E456-F45-G4-H2-I23-J7b-K2-L1. The new species appears closely related to the members of X. pyrenaicum group which are characterised by a rounded tail with or without an inconspicuous projecting bulge and a uterus devoid of Z-differentiation but showing spiniform structures. The new species differs from members of the X. pyrenaicum group, which includes the recently described X. iranicum, by a more rounded tail without any projection. Beside morphological and morphometric data, molecular analyses of the near-full-length small subunit rDNA gene (SSU) placed the new species in close relationship with some species belonging to Xiphinema morphospecies group 6 and further separated this species from the X. pyrenaicum complex.
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Bulletin du Muséum national d'histoire naturelle. Section A, Zoologie, biologie et écologie animales, 1979
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Bulletin du Muséum national d'histoire naturelle. Section A, Zoologie, biologie et écologie animales, 1986
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Zoologica Scripta, Sep 1, 1978
ABSTRACT The following species are described: Q. papillata sp.n., characterized by its head-shape... more ABSTRACT The following species are described: Q. papillata sp.n., characterized by its head-shape with broad truncated anterior end and in males by the possession of 2 single short, stout ventral genital papillae situated anterior to the middle of the body; Q. lizardiensis sp.n., closely related to Q. papillata but distinguished from the latter by its head-shape with a pronounced distally widened anterior border and the absence of genital papillae in the male; Q. freudenhammeri sp.n., characterized by its head-shape with an anteriorly tapering naked front part with thickened, sclerotized cuticle and a rounded posterior part covered with thin cuticle and by the stoma with cheilorhabdia; Q. noffsingerae sp.n., characterized by its head-shape with widened truncated anterior border surrounding 6 sometimes protruding lips, each with a tube-like papilla and by the position of the ocelli situated along the posterior half of the long cylindrical oesophagus.
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CABI Publishing eBooks, 2006
This paper provides morphological descriptions of the nematodes of the Orders Chromadorida, Desmo... more This paper provides morphological descriptions of the nematodes of the Orders Chromadorida, Desmodorida and Desmoscolecida as well as their habitats, geographical distribution, taxonomic details, illustrations and keys to the genera.
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Zoologica Scripta, Mar 20, 2017
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Papers by Wilfrida Decraemer