|Morphology and Anatomy||Life Cycle|
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Small plant-parasitic nematodes, 0.3mm long.
Females: Gravid female may swell anterior to vulva.
Strong stylet, usually about 36 µm.
Ovary single, outstretched.
| Males: Reduced, with stylet reduced or absent,
and probably do not feed.
Often their starved bodies are marked by characteristic banding patterns as food reserves are depleted.
California, Europe, Africa, North and South America, and Australia.
|Paratylenchus neoamblycephalus feeds singly or in groups of up to 15, especially at ruptures or where lateral roots emerge; heads remain in cortex|
|The nematodes cause small lesions (possibly caused by oxidation of phenolic compounds in roots) and lateral root death.|
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.
For an extensive list of host plant species and their susceptibility, copy the name
select Nemabase and paste the name in the Genus and species box
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.
|In greenhouse tests, top growth of plum reduced about 25% by high numbers of nematodes (Braun and Lownsbery).|
Usually not managed, nematicides have been used.
For a list of plant species or cultivars (if any) reported to be immune or to have some level of resistance to this nematode species, copy the name
select Nemabase Resistance Search and paste the name in the Genus and species box
Braun and Lownsbery