Rev 12/99
Mesocriconema curvatum (Raski, 1952) de Grisse & Loof, 1965
Synonyms: Criconemoides curvatum Raski, 1952
Female:
Male:
Female juvenile: General morphology similar to that of female.
Annules with smooth or slightly irregular posterior margins.
Male juvenile: More slender and with more angular annulation than female juvenile. Spear absent.
[Ref: CIH Descriptions of Plant-parasitic Nematodes, Set 4, No. 58 (1974)
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:
Mesocriconema curvatum was originally escribed as Criconemaoides curvatum by Raski (1952) from soil around the roots of antirrhinum sp. (snapdragon) near Colma in San Mateo County, California, USA.
It is reported from the western USA. and also the east coast. M. curvatum is important in tree and ornamental nurseries in New Jersey.
D-rated pest in California Nematode Pest Rating System.
In carnation, it feeds ectoparasitically at root tips and in root hair zone.
Penetrates cell wall by short thrusts of spear; median esophageal bulb then pulsates. The rest of the body remains immobile during feeding.
Anterior end of nematode (and occasionally, the entire body) may become embedded into the root, especially when the population density is high.
Locomotion of the nematode occurs through wave-like contractions of the body, beginning in the tail region and moving anteriorly. Movement is not undulatory, but rectilinear.
In pots, many nematodes remain near the surface; horizontal spreading may be aided by water flow and splashing. Downward movement is probably due chiefly to downward water current.
Cranberry, peach, clover, strawberry, and carnation.
Ecophysiological Parameters:
Optimum temperature is probably near 24 C. At 30 C, reproduction was much lower and the size of the nematodes was slightly smaller than at 15-25 C.
Feeding can reduce root weight of carnations by 33% in 6 months; causes destruction of epidermis and necrosis of cortex.
In peach, feeding can cause extensive lesions and pits in roots. Mesocriconema curvatum is considered to be one of the factors involved in peach decline.
In cranberry, feeding causes retarded plant growth and inhibits formation of new runners..
Steam soil used in greenhouse culture; clean root cuttings.
Applications of nematicides in infected peach orchards results in improved grwoth.
Host Plant Resistance, Non-hosts and Crop Rotation alternatives:
Pinkerton, J. N.; Forge, T. A.; Ivors, K. L.; Ingham, R. E.. 1999. Plant-parasitic nematodes associated with grapevines, Vitis vinifera, in Oregon vineyards. Journal of Nematology, 31:624-634.
Brzeski, M., Y.E. Choi and P.A.A. Loof. 2002a. Compendium of the genus Criconemoides Taylor, 1936 (Nematoda: Criconematidae). Nematology 4:325-339.
Brzeski, M., P.A.A. Loof and Y.E. Choi . 2002b. Compendium of the genus Mesocriconema Andrassy, 1965 (Nematoda: Criconematidae). Nematology 4:341-360.
Cordero, M. A. Robert T. Robbins, Allen L. Szalanski. 2012. Taxonomic and Molecular Identification of Mesocriconema and Criconemoides Species (Nematoda: Criconematidae). J. Nematology 44: 399-426.
Geraert, E. 2010. The Criconematidae of the World: Identification of the Family Criconematidae. Academia Press, Gent. 615p.
Loof, P.A.A and A. De Grisse. 1989. Taxonomic and nomenclatorial observations on the genus Criconemella De Grisse and Loof, 1965 sensu Luc and Raski, 1981. Med. Fac. Landn. Rijksuniv. Gent. 54:53-74.
Raski, D.J. 1952. On the morphology of Criconemoides Taylor, 1936, with descriptions of six new species (Nematoda: Criconematidae). Proceedings of the Helminthological Society of Washington 19:85-99.
Raski, D.J. and Luc, M. 1987. A reappraisal of Tylenchina (Nematoda) 10. The superfamily Criconematoidea Taylor, 1936. Revue de Nematologie 10:409-444.