Ditylenchus Africanus

Arachis hypogaea
Chenopodium album
Datura stramonium
Eleusine indica
Glycine max
Gossypium hirsutum
Helianthus annuus
Lupinus albus
Medicago sativa
Nicotiana tabacum
Phaseolus vulgaris
Pisum sativum
Solanum tuberosum
Sorghum bicolor
Tagetes minuta
Triticum aestivum
Vigna unguiculata
Xanthium strumarium
Zea mays (maize)= Presente, sin dar más detalles. Sudafrica = extendido = localizado. Distribución restringida. Mozambique
= Confinados y sometidos a cuarentena = Informes ocasionales o pocos
= evidencia de patogeno = Última informó ... = Presencia no confirmada = See regional map for distribution within the country
CABI / EPPO, 2001. Ditylenchus africanus. Mapas de Distribución deEnfermedades de las Plantas, N º 836, edición 1. Wallingford, Reino Unido: CAB International.
ASIA China-Beijing presente sin detalles Zhang et al., 2009
http://www.cabi.org/isc/?compid=5&dsid=19284&loadmodule=datasheet&page=481&site=144
Contents
NAMES AND TAXONOMY
- Preferred scientific name
- Taxonomic position
- Other scientific names
- BAYER code
- Common names
- Notes on taxonomy andnomenclature
MORPHOLOGY
HOST RANGE
- Notes on host range
- List of hosts plants
GEOGRAPHIC DISTRIBUTION
- Notes on distribution
- Distribution List
BIOLOGY AND ECOLOGY
MEANS OF MOVEMENT AND DISPERSAL
PHYTOSANITARY SIGNIFICANCE
SEEDBORNE ASPECTS
- Incidence
- Effect On Seed Quality
- Pathogen Transmission
- Seed Treatment
- Seed Health Tests
IMPACT
SYMPTOMS
DETECTIONAND INSPECTION
DIAGNOSIS
SIMILARITIES TO OTHER SPECIES
CONTROL
- Chemical Control
- Cultural Control and Sanitary Methods
- Host-Plant Resistance
- Biological Control
REFERENCES





NAMES AND TAXONOMY
[contents]

Preferred scientific name

Ditylenchus africanus Wendt et al., 1995

Taxonomic position

Domain: Eukaryota
Kingdom: Metazoa
Phylum: Nematoda
Family:Anguinidae

Other scientific names

Ditylenchus destructor Thorne, 1945

BAYER code

DITYAF (Ditylenchus africanus)

Common names


English:
peanut pod nematode

South Africa:
grondboonpeulaalwurm
groundnut pod nematode

Notes on taxonomy and nomenclature

The peanut pod nematode was first discovered in 1987 (De Waele et al., 1989) when it was soaked from hulls and seeds showingsymptoms resembling those caused by the fungus Chalara elegans. It was first identified as Ditylenchus destructor (De Waele et al., 1989). Since it does not damage potatoes (De Waele et al., 1991) and thrives at high temperatures around 28 to 30°C (De Waele and Wilken, 1990) it was considered a distinct race from the populations found in Europe and the USA.

However, a molecular study ofcomparative taxonomy of some populations of Ditylenchus by Wendt (1992) threw doubt on this classification. A subsequent study based on characteristics of morphology and restriction fragment length polymorphisms (RFLPs) of ribosomal DNA, described the South African population of D. destructor as Ditylenchus africanus sp. n.





MORPHOLOGY
[contents]

The morphometrics of the South Africanpopulation agreed with those reported for D. destructor: 6 to 11 lateral incisures, a rounded tail tip, and a long post-uterine sac relative to the vulva-anus distance (De Waele et al., 1989).

De Waele et al. (1989) and Wendt et al. (1995), give detailed descriptions of the adult females and males (larvae not described). The following description is given by Wendt et al. (1995):

Female: Headflattened, about 1.3 µm high and 6.4 - 7.3 µm wide, not offset from, but narrower than rest of body. SEM shows labial area with pore-like stoma opening surrounded by six outer labial sense organs and two large, medial lips, each with a pair of cephalic sensillae. Outline of labial area and head region hexagonal. Amphidial aperture elliptical, directed towards stomal opening. First head annule...