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Banana Root Nematode

Scientific Name
Pratylenchus coffeae
Scientific Author
(Zimmermann, 1898) Filipjev & Schuurmans Steckhoven, 1941
Taxonomy
(Nematoda: Tylenchida: Pratylenchidae)
Pest Status
0 Unknown
Status
0 NZ - Unknown
Reliability
High
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Diagnostic Notes
Description (after Siddiqi, 1972):

Female

Body rather slender in young and fatter in older specimens, distinctly annulated. Lateral fields normally with 4, sometimes 5 or 6 incisures. Lip region slightly set off, with 2 distinct annules; occasional specimens have 3 annules on one side of the lip region. Basal knobs of spear round to oblong. Post-uterine branch 1.0-1.5 times body-width length, but may be up to 90 µm long, with a terminal rudimentary ovary which sometimes has distinct oocytes. Spermathecae large, broadly oval to nearly rounded, often with sperm. Intra-uterine eggs may contain embryos. Tail 2.0-2.5 times anal body width in young females, 1.5-2.0 times anal body width in old specimens; terminus indented, sometimes appearing smoothly rounded, truncate or irregularly crenate.

Male

Spicules slender with well marked manubria and ventrally arcuate shaft, 16-20 µm long; gubernaculum length 4-7 µm; hypoptygma prominent; bursal margins faintly crenate.

Measurements (after Sher and Allen, 1953):

Females: L = 0.45-0.7 mm; a = 25-35; b = 5-7; c = 17-22; V = 54-2676-833.2-8; spear = 15-18 µm. Neotype female: L = 0.59 mm; a = 34; b = 6.3; c = 21; V = 3281.94; spear = 18 µm.

Males: L = 0.45-0.70 mm; a = 26-40; b = 6-7; c = 17-24; T = 45-52; spear = 15-17 µm. (After Loof, 1960): 69 females: L = 0.37-0.70 (0.53) mm; a = 17.7-30.5 (23.7); b = 5.0-7.8 (6.8); c = 13.7-23.9 (19.0); V = 63-2675.8-84.2 (80.1); spear = 14-17 µm.

10 males: L = 0.41-0.56 (0.48) mm; a = 23.8-31.4 (27.4); b = 5.9-7.7 (6.5); c = 17.6-23.3 (19.1); T = 37-58 (48); spear = 14-15 µm.

More Information
Specimen Contact
MAF Plant Health & Environment Laboratory (Nematode collection held by Zeng Zhao at Landcare Research)
Author
Zhao, Zeng Qi & Crosby, T.K.
Created
03/07/2012 12:34 AEST
Last Updated
17/07/2012 10:31 AEST
Citation
Zhao, Zeng Qi & Crosby, T.K. (2012) Banana Root Nematode (Pratylenchus coffeae) Updated on 7/17/2012 10:31:03 AM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

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