Dolichodorus miradvulvus




Rev 11/19/2019

Awl Nematode Classification Hosts
Morphology and Anatomy Life Cycle
Return to Dolichodorus Menu Economic Importance Damage
Distribution Management
Return to Dolichodoridae Menu Feeding  References
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology




         Dolichodorus miradvulvus Smart & Khoung, 1985



Back to Top

Morphology and Anatomy:

Dolichodorus miradvulvus A) Anterior portion of female. B) Anterior portion of male. C) End
of male gonad. D) Enlargement of apparent seminal vesicle portion of male gonad. E) Male tail showing
sclerotized-appearing junction of bursa and body. F) Male tail showing spicules and gubernaculum.


Median bulb well-developed.  

Excretory pore level with center of median bulb.

Basal esophageal bulb elongate-pyriform. Not overlapping to slight ventral overlap of intestine.

Vulva a transverse slit in an oval depression which has anterior and posterior pouches that appear to be sclerotized. Cuticle on ventral surface anterior and posterior to vulva with up to 10 deep grooves
separated by two or three annules. (miradvulvus = unusual near vulva).

 Interior of vagina with strengthening ridges.

Ovaries paired, outstretched, spermathecae present.

Tail tapering abruptly then conoid.    

Male: Similar to female.

Spicules and gubernaculum slightly arcuate. Gubernaculum with reflexed distal tip.

Males have unique caudal alae, well-developed. Tail tip not bifurcate.




Dolichodorus miradvulvus  A) Female gonad. B) Spermatheca C) Vulval region with grooves and pouches anterior and posterior to vulva, strengthening ridges in the vagina and muscles attached to the vaginal wall and body wall. D) Female tail, ventral view. E) Female tail, lateral view. F) Juvenile tail
withgradual tapering. G) Juvenile tail with abrupt tapering.

Drawings and photographs from Smart and Khoung, 1985

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

Back to Top


Recorded soil and plant samples of Anubias nana Engler from a commercial aquarium plant nursery in Florida. Can be cultured on Zea mays.

Back to Top

Economic Importance:

Causes damage to Anubias nana.


Back to Top


Ectoparasite mainly at root tip; nematode has long stylet.

Feeding of D. miradvulvus at root initials of the aquatic plant Anubias nana can result in complete destruction of the root system (Smart and Khuong, 1984, 1985; Smart and Nguyen, 1991).

Back to Top


For an extensive host range list for this species, click


Back to Top

Life Cycle:

Ecophysiological Parameters:

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



Back to Top




Back to Top


Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

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


Back to Top


Smart G.C. Jr. and N.B. Khoung. 1984. A new awl nematode inhibits rooting of the aquarium plant Anubias nana.  Proceedings of the First International Congress of Nematology, Guelph, Ontario, Canada Aug 5-10, 1984. 

Smart, G.C., Khoung, N.B. 1985. Dolichodorus miradvulvus n. sp. (Nematoda, Tylenchida) with a key to the species. Journal of Nematology 17:29-37.

Smart G.C. and K.B. Nguyen. 1991. Sting and awl nematodes. Pp. 627-668 In Nickle W.R. (ed.), Manual of Agricultural Nematology. Marcel Dekker Inc., NY.



Back to Top

Copyright © 1999 by Howard Ferris.
Revised: November 19, 2019.