Rev 09/13/2023
Tylenchida Tylenchina Tyl;enchuloidea Tylenchulidae Paratylenchinae
Paratylenchus neoamblycephalus Geraert, 1965
Nomenclature: Reuver, 1959 described a Paratylenchus species as P. amblycephalus. However, subsequent sampling at the type l;ocality revealed a micture of two species, the species described by Reuver as P. amblycephalus (mainly) and P. projectus. The specimen that Reuver designated as holotype for P. amblycephalus was actually P. projectus. Geraert, 1965 selected a holotype from the main species present and designated it P. neoamblycephalus. Consequently, the name P. amblycephalus is no longer valid (Raski, 1975)
Females: Gravid female may swell anterior to vulva.
Strong stylet, usually about 36 µm.
Ovary single, outstretched.
Often their starved bodies are marked by characteristic banding patterns as food reserves are depleted.
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:
California, Europe, Africa, North and South America, and Australia.
.
Rose, peach, apricot, apple, grape, Prunus (especially prunes), plum rootstocks - Myrobalan and Marianna, other herbaceous plants.
Apple is a host in Europe and Australia, but not in California.
This species is the most commonly occurring plant-parasitic nematode in California prune orchards.
Non-hosts include fig and walnut.
Ecophysiological Parameters:
Males and fourth-stage juveniles have no stylet and do not feed. Fourth stage juveniles of Paratylenchus are the survival stage (dauer) in some species.
Usually not managed, nematicides have been used.
Resistance
Host Plant Resistance, Non-hosts and Crop Rotation alternatives:
Braun A.L. and Lownsbery, B.F. 1975. The pin nematode, Paratylenchus neamblycephalus, on myrobalan plum and other hosts J. Nematology 7:336-347.
Geareart, E. 1965. The genus Paratylenchus. Nematologica 11:301-334.
Raski, D.J. 1975. Revision of the Genus Paratylenchus Micoletzky, 1922 and Descriptions of New Species. Part II of Three parts. J. Nematology 7 :274-295.
Reuver I. 1959. Untersuchungen Uber Paratylenchus amblycephalus n. sp. (Nematoda, Criconematidae). Nematologica 4:3-15. 25.