Co-Authors:
Peneva, V., Ctrl. Laboratory of General Ecology, 2 Gagarin Street, 1113 Sofia, Bulgaria
Orion, D., Department of Nematology, A.R.O., Volcani Centre, Bet-Dagan 50250, Israel
Shlevin, E., Department of Nematology, A.R.O., Volcani Centre, Bet-Dagan 50250, Israel
Bar-Eyal, M., Department of Nematology, A.R.O., Volcani Centre, Bet-Dagan 50250, Israel
Brown, D.J.F., Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, United Kingdom
Abstract:
Longidorus israelensis sp.n., a parthenogentic species associated with diseased carrots in Israel, is described. This species is characterised by its long body (7.1-9.1 mm), slightly expanded and anteriorly flattened head region, amphidial pouches not bilobed, long odontostyle (125-135 μm), and almost hemispherical short tail (36,46 μm). Also, it has a somewhat unusual arrangement of the oesophageal gland nuclei. Carrots fed upon by L. israelensis sp.n. showed arrested root growth, alternative growth apices and root-tip galling, resulting in deformed and split carrots. The nematode is usually present at 20-40 cm depth in the soil profile but migrates to 40-100 cm depth to survive the hot dry summer period.