Rev 04/05/2023
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Tylenchida Tylenchina Tyl;enchuloidea Tylenchulidae Paratylenchinae
Gracilacus straeleni (De Cononck, 1931) Raski, 1976
Synonyms
Paratylenchus straeleni
Note: Many authors gave not accepted Raski's creation of the genus Gracilacus which is based largely on stylet length and swelling of body. In those cases, this species is described as Paratylenchus straeleni.
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Male: Less ferquent than females.
[Ref: Raski, 1976)
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:
Several reports from throughout USA and worldwide.
Young, vermiform, female inserts its long stylet into root tissues and remains attached to the root surface by the stylet. Nematode feeds in epidermal, cortical parenchyma and sclerenchyma cells. Feeding induces cell wall thickening.
Ecophysiological Parameters:
Host Plant Resistance, Non-hosts and Crop Rotation alternatives:
Ghaderi, R., Kashi, L., Karegar, A. 2014. Contribution to the study of the genus Paratylenchus Micoletzky, 1922 sensu lato (Nematoda: Tylenchulidae). Zootaxa 3841:151-187.
Raski, D.J. 1962. Paratylenchidae n.fam. with description of five new species of Gracilacus n.g. and an emendation of Cacopaurus Thorne, 1943, Paratylenchus Micoletzky, 1922 and Criconematidae Thorne, 1943. Proc. Helminthol. Soc. Washington 29:189-207.
Raski, D.J. 1976. Revision of the Genus Paratylenchus Micoletzky, 1922 and Descriptions of New Species. Part III of Three parts--Gracilacus. J. Nematology 8:97-115.