Mesodorylaimus brzeskii

Mesodorylaimus brzeskii	Contents	Rev 04/04/2023
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Mesodorylaimus Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Dorylaimidae Menu	Feeding	References
	Go to Nemaplex Main Menu	Go to Dictionary of Terminology

Classification:

Enoplea

Dorylaimia
Dorylaimida

Dorylaimidae

Mesodorylaimus brzeskii Abolafia & Pena-Santiago, 2000

Morphology and Anatomy:

Slender to very slender nematodes, <1.5mm long.
Outer cuticle layer thin with fine transverse striations .
Inner cuticle layer also quite thin too but thickened in caudal region.
Lateral chord occupying 27-41% of the midbody width. Lateral pores obscure.
Lip region slightly angular, sometimes more rounded, almost continuous with the adjacent body or offset by weak depression; 1.8-2.4 times as wide as high and about one-third as wide as the body diameter at neck base.
Lips amalgamated, with slightly angular or rounded contour.
Amphid fovea cup-shaped, opening at level of the cephalic depression and occupying one-third to two-fifths of the corresponding body width.
Cheilostome a truncate cone, three to four times as long as wide.
Odontostyle typical of the genus, 0.9-1.2 times as long as lip region width
Guiding ring simple, well visible.
Odontophore rod-like, about 1.5 times as long as the odontostyle.
Esophagus eith slender but muscular anterior part which expands very gradually into the basal bulb which is cylindrical, six to seven times as long as wide and occupying 35-40% of esophageal length.
Cardia rounded to conoid, surrounded by intestinal tissue.
Female reproductive system didelphic-amphidelphic. Ovaries large, often reaching and surpassing the sphincter level.
Oviduct with a slender part with prismatic cells and a developed pars dilatata with clear lumen and functioning as a spermatheca since it often contains sperm.
Sphincter present between oviduct and uterus.
Vagina extending inwards 52-60%) of body width. Pars proximalis vaginae 1.5-1.7 times as long as wide and with somewhat sigmoid walls, surrounded by moderately developed musculature. Pars refringens vaginae with two very close trapezoid or dropshaped sclerotizations measuring 2.5 x 4 pm and with a combined width of 6-8 pm. Pars distalis vaginae 3.5-4 pm long.
Vulva a transverse slit.
Prerectum 1.5-3.2 anal body widths long. Rectum 1.0-1.5 anal body widths long.
Tail elongated, first rapidly tapering, then gradually to a more or less acute or cylindrical terminal portion.

Male:

Similar to female but with rounded tail.
Genital system diorchic. Testes oposed
An adanal pair and a series of seven or eight separated ventromedian supplements
Spicules curved ventrad, 1.3-1.6 anal body widths long. Lateral guiding pieces quite stout, about three times as long as wide and with acute tip.
Tail rounded conoid, dorsally convex, ventrallv almost straight.

Ref: (Abolafia and Pena-Santiago et al., 2000

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

Distribution:

Described from sandy soil near the Mediterranean coastline in southern Spain.

Feeding:

Categorized as an omnivore (Yeates et al., 1993) and studied as a predator by Bilgrami (1995).

Life Cycle:

Ecophysiological Parameters:

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

Ecosystem Functions and Services:

Predatory regulation of opportunistic species.

References:

Andrassy, I. 2009. Free-living Nematodes of Hungary III. Hungarian Natural History Museum, Budapest. 608p.

Abolafia J. and Pena-Santiago, R. 2000. Nematodes of the order Dorylaimidafrom Andalusia Oriental, Spain. The genus Mesodorylaimus Andrassy, 1959. IV. Two Realtively small-sized new species with a compendium of their relatives. Annales Zoologica (Warsaw) 50:135-144

Yeates, G.W., T. Bongers, R. G. M. De Goede, D. W. Freckman, and S. S. Georgieva. 1993. Feeding habits in soil nematode families and genera—An outline for soil ecologists. Journal of Nematology 25:315-331.

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