Length = (av. = ) �m; width = (av. = ) �m. Female: Adult white, lemon-shaped with large egg-mass often almost. During to in several nematological surveys in the Tepeaca Valley, Puebla, Mexico, carrot cyst nematode, Heterodera carotae was. General information about Heterodera carotae (HETDCA).

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Heterodera carotae Jones, Damage to Italian crops caused by cyst-forming nematodes. J2, females, males and cysts were processed. Heteroderidae on barley Hordeum vulgare L. In a heterovera cases, the tail may be shortened to resemble that of a Meloidogyne juvenile.

The Markov chains were sampled at intervals of generations. Observation on the morphology of Heterodera carotae and Heterodera avenae in Michigan.

On Heterodera cruciferae n. A manual for practical work in nematology. Excretory pore av. The foliage was stunted, chlorotic and in some plants reddish Fig. Vulval bridge frequently broken in older specimens.

Systematics of cyst nematodes Nematoda: Subcrystalline layer present, but fragile. This is an example of importance of combination of several methods for the correct identification of cyst nematodes. Median esophageal bulb rounded with distinct valve.


Total seven unique COI haplotypes were identified for H.

Spear strong with rounded basal knobs. Phasmids obscure, annules anterior to excretory pore. Females White lemon shaped with large egg sac almost of the size of the female; vulval slit on cone terminus.

Posterior probabilities are given on appropriate clades. Adult males may be found after about 30 days; they are numerous and, in Italy, they were found free in the soil between October and November Ambrogioni, Lateral field with four incisures forming three bands Table 1 ; Figs.

The carrot cyst hetetodera, in Lamberti, F. Return to Heteroderidae Menu. The cysts were extracted by the Fenwick method Fenwick, Journal of Nematology50 2 Journal of Nematology Society of Nematologists. DNA was extracted from single cysts of H. One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using.

Mexican cyst nematode, Globodera mexicana Campos-Vela, ; Subbotin et al. Host range Tests of nine plant species from five families for infection of H.

EPPO Global Database

According to Jones a and Mathews the male stylet of H. European Journal of Plant Pathology After reviewing the morphological characters and morphometrics, it most resembles to H. Up to now, 15 species of cyst nematodes from four genera, Globodera, Punctodera, Cactodera, and Heterodera have been known in Mexico and with our craotae finding of H.


Molecular Phylogenetics and Evolution Our study also showed difference between the male stylet length, being longer for H. Hemizonid conspicuous, annules long, located annules in front of the excretory pore.

Heterodera carotae – Wikipedia

Phylogenetic relationships within the cyst-forming nematodes Nematoda, Heteroderidae based on analysis of sequences from the ITS regions of ribosomal DNA. Some females even at maturity remain embedded within the root.

The most common variation is the presence of spherical refractive bodies within the tail, sometimes with associated swelling. She dies and her cuticle hardens to become a cyst still attached to the root.

Root invasion takes place in 36 hrs.