Amplimerlinius macrurus

Amplimerlinius macrurus	Contents	Rev 12/16/2024
	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Amplimerlinius Menu	Economic Importance	Damage
	Distribution	Management
Return to Merliniidae Menu	Feeding	References
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Classification:

Chromadorea Rhabditida Tylenchina Tylenchoidea
Merliniidae
Merliniinae

Amplimerlinius macrurus (Goodey, 1932) Siddiqi, 1976

Synonyms

The genus Amplimerlinius is characterized by having females with abnormally thickened cuticle at the hemispherical and striated tail terminus, lip annuli without longitudinal indentations, a sclerotized cephalic framework, and a robust stylet (Ghaderi and Karegar, 2014).

Female:

Cuticle annulated prominently,
Lateral field 27 to 32% of body width, with six lines.
Head conoid with six annuli and flattened apex, continuous with body contour.
Stylet length 25 to 29 um, well developed; shaft equal to conus, knobs sloping slightly backward.
DEGO 3.4 to 3.8um from the base of stylet.
Hemizonid anterior to excretory pore.
Median bulb slightly elongated with prominent valve plates.
Nerve ring 105 to 110 um from the anterior end.
Basal bulb cylindrical, length/width ratio 1.5 to 2.0, offset from the intestine, cardia oval, prominent.
Vulva at 50 to 59%., flush with the body surface.
Vagina about half body width, not sclerotized.
Spermatheca rounded, with sperm.
Didelphic-amphidelphis, ovaries outstretched, each with a single row of oocytes.
Tail clavate, with 48 to 62 annuli at ventral side, tail terminus annulated.

Male:

Head, stylet, pharynx, lateral fields, and annuli: similar to females.
Spicule length: 28 to 34 um
Gubernaculum arch-shaped,
Bursa is located 5 to 8um anteriorly to the spicule base
Phasmids 40 to 44% of tail length.

Ref: Stefanovska et al., 2021

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

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Distribution:

Amplimerlinius macrurus has been reported in several areas of the world in soils under different land use and cover types, including: crops, meadows, pastures, grasslands, forest, fruit, nut, and olive orchards (Stefanovska et al., 2021).

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Economic Importance:

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Feeding:

A migratory ectoparasite of plant roots.

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Hosts:

For an extensive host range list for this species, click

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Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click	If species level data are not available, click for genus level parameters

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Damage:

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Management:

For plants reported to have some level of resistance to this species, click

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References:

Ghaderi, R. and Karegar, A. 2014. Description of Amplimerlinius macrurus sp. n. (Nematoda: Merliniidae) and observations on three other species of the genus from Iran. Zootaxa 3869: 17-32.

Siddiqi, M.R. (2000). Tylenchida: parasites of plants and insects, 2nd edition. Wallingford, UK, CAB International

Stefanovska, T., Skwiercz, Flis, L.,Pidisnyuk, V., Zouhar, M. 2021. First record of the ectoparasitic nematode Amplimerlinius macrurus (Nematoda: Tylenchida) on the perennial grass MiscanthusÃ—giganteus (Angiosperms: Poaceae) in Ukraine. J. Nematology 53: | DOI: 10.21307/jofnem-2021-024