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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After 54 days, one plot was used for the extraction of second stage juveniles J2 and males by the centrifugal flotation technique Jenkins, Chlorosis and reddish foliage.

A second cyst-forming nematode parasite of barley Hordeum vulgare L. Vulval slit, av. A, Cysts; B, Vulval cone.

These results agree with those reported for H. Journal of Helminthology Color changes from white to russet-brown with no intermediate yellow stage.

Morphometrics of J2, males, females, and cysts from Heterodera carotae and H. Observation on the morphology of Heterodera carotae and Heterodera avenae in Michigan.

Tail acutely conical with rounded tip usually with the presence of 1—3 spherical refractive body sometimes with associated swelling.


The foliage was stunted, hetfrodera and in some plants reddish Fig. Russian Journal of Nematology The distribution in this summary table is based on all the information available. Mature cysts small, lemon-shaped with distinct neck and vulval cone; neck often twisted.

Journal of Nematology Society of Nematologists. Scanning electron microscopic photos.

Distribution of Heterodera carotae and Meloidogyne hapla in Michigan Carrot Production

Posterior probabilities are given on appropriate clades. The carrot heeterodera nematode Heterodera carotae is a highly specialized parasite infecting only wild and cultivated carrots Daucus carota L. Sub-crystalline layer usually not observed; bullae absent. Heterodera cruciferae Franklin,parasite of Brassica oleraceae L.

Heterodera carotae

Labial disc fusioned Table 1 ; Fig. Juveniles from the egg-mass hatch within a few days, even in the absence of a host plant, and may begin a second generation by invading young rootlets.

Although, the Mexican population of H. Patchy growth, yellowish leaves; distortion of tap root, due to early lignification, renders affected carrots unmarketable. Vulval slit in a cleft on cone-top. A destructive nematode of carrot.

Two generations may also develop on greenhouse-grown carrots Stelter, It has also been found in India and Cyprus and at several locations in the state of Michigan in the United States of America. On Heterodera cruciferae n.


SEM observations and morphometrics of the cabbage cyst nematode, Heterodera cruciferae Franklin,collected where Brassica spp. There are no pictures available for this datasheet If you can supply pictures for this datasheet please contact: Heteroder Journal of Nematology Cactodera cacti is a parasite of cacti and was found in several states of Mexico with warm temperatures and lower elevations Baldwin and Heteridera,Cactodera amaranthiin spinach Spinacia oleracea L.

EPPO Global Database

Four weeks after invasion the juveniles moult and the females become mature. Methods for the recovery and counting of cysts of Heterodera schachtii from soil. At first the male and female juveniles look similar, both being threadlike and growing to 1.