Rev 31-08-2023
Enoplea Triplonchida Diphtherophorina Diphtherophoidea Trichodoridae Trichodorinae
Trichodorus Cobb, 1913
(47 known species as of 1996)
Etymology - from the Greek trichos (a hair) and dory (a spear).
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Cuticle tends to swell in water and fixative when nematodes are killed.
Curved onchiostyle with dorsal groove.
Females: Diovarial.
Ref. Decraemer, W. 1995
Worldwide. A species rich genus, for example, as of 2022, .six trichodorid species have been recorded from Maryland, USA; ten valid trichodorid species have been recorded from California (Subbotin et al., 2020).
Feeding by species of these nematodes stunts roots, transmits Tobraviruses including Tobacco Rattle Virus, Pea early-browning Virus and Pepper Ringspot Virus.
Tobraviruses are straight tubular particles with two size ranges, 180-210 nm and 45-115 nm. Trichodorus and Paratrichodorus are vectors.
At root tip, by repeated thrusting of the oonchiostyle within a polysaccharide feeding tube. Cell contents move along the groove along the dorsal side of the onchioostyle.
Root tip damage causes root elongation to cease. Hence "stubby root" symptoms.
Decraemer, W. 2011. Virus vector families Part II. Trichdoridae.Academia Press, Gent.123p.
Subbotin, S.A., Cid del Prado Vera, I., Inserra, R.N., Chizhov, V.N. & Decraemer, W. (2020). Molecular characterisation of some stubby root nematodes (Nematoda: Trichodoridae) from the USA and other countries. Nematology 22, 39-57. DOI: 10. 1163/15685411-00003279