Pratylenchus brachyurus (Godfrey, 1929) Filipjev &
region is generally low and flat. Head frame sclerotized.
Tail conical and rounded to flattened at tip.
Nematode has short ventral overlap of
Monovarial, uterus prodelphic,
Females are slender.
Males are extremely rare.
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:
Widely in the tropics and sub-tropics. Type host was pineapple in
Hawaii where it was described by Godfrey in 1929..
In surveys of the state of Mato Grosso in Brazil, 94% of cotton fields
and 85% of soybean fields were infested with P. brachyurus (Da Silva et al., 2004;
Miranda et al., 2010).
pest in California Nematode Pest
Migratory endoparasite of
The nematode is readily cultured on carrot disks on 1% agar for
detailed study of life cycle and other biological aspects (Moody et al.,
Wide host range, including:
There are no males (extremely rare); females reproduce by
the somatic chromosome number is 30-32 (Roman and Triantaphyllou, 1969). .In
mitotic parthenogenesis there is no fertilization and there is mitotic division
of oogonia so that the somatic number of chromosomes is preserved throughout.
Burrows through cortex; necrosis occurs after 24 hours in
tobacco, 4 days in pineapple.
Can stop growth of pineapple roots.
May result in vessel blocking in corn.
In peanuts, causes crop loss by weakening pegs so that pods
drop off; lesions appear on pegs, pods, and shells.
Slows growth on young citrus in Florida, but effect diminishes
with tree age (O'Bannon).
Patchers of stunted plants in soybean fields in Brazil
The wide diistribution and host range of this nematode are problematic.
The cotton fields of Mato Grosso state in Brazil with 94% infestation of P.
brachyurus are rotated to soybean and corn, both hosts of the nematode (Da
Siva et al., 2004).
Host Plant Resistance, Non-hosts
Attempts at soybean seed treatment with endospores of
Pasteuria thornei only reduced
nematode abundance when applied at very hig densities and was less effective
than abamectin (Confort and Inomoto, 2018)
Confort, P.M. de S. and M. M.
Inomoto. 2018. Pasteuria thornei,
a novel biological seed treatment for Pratylenchus
brachyurus control in soybean. Nematology 20:519-523.
Da Silva. R.A., M.A.S. Serrano, A.C. Gomes, D.C. Borges, A.A. de Souza, G.L.
Asmus, M.M. Inomoto. 200f. Ocorrï¿½ncia de Pratylenchus brachyurus e Meloidogyne
incognita na Cultura do Algodoeiro no Estado do Mato Grosso. Fitopatol. Bras.
Lordello, L.G.E. 1986 Plant-parasitic nematodes that attack coffee. Pp
33-41 in Anon. Plant-parasitic nematodes of bananas, citrus, coffee,
grapes and tobacco. Union Carbide Corp.
MirandaM.D.FavoretoL.& RibeiroN.R.(2010). Nematoides:
um desafio constante.
Fundaï¿½ MT Brazil Boletim de Pesquisa Soja 2011 pp. 400-414.
Moody, E.H., Lownsbery, D.F., Ahmed, J.M. 1973. Culture of the
root-lesion nematode Pratylenchus vulnus
on carrot disks. J. Nematology 5:225-226.
Roman, J., Triantaphyllou, A.C. 1969. Gametogenesis
oand reproduction of seven species of Pratylenchus. J. Nematology 1:357-362.