North-East India Helminth Parasite Information Database

Aplectana agubernaculum Back


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                                    Aplectana agubernaculum


Neoxysomatoides Yamaguti, 1961; Neoriellietnema Ballesteros-Marquez, 1945; Neyraplectana Ballesteros-Marquez 1945


Amolops (marmoratus (A. afghanus)), Eburana (chloronata (=Rana livida)), Euphlyctis (cyanophlyctis), Philautus ( sp.), Polypedates (leucomystax), Rana (Sp.), Rana (danieli), Rana (khare), Rhacophorus ( maximus (=R. nigropalmatus))




Mokokchung (Nagaland), Kohima (Nagaland), Dimapur (Nagaland), Cherrapunjee (Meghalaya)


Small stout worm, tapering on body ends, abruptly ending tail., 3.25-7.0 mm in length , 0.204-0.49 mm in maximum width. Cuticular annulations or ridges well marked. Mouth with 3 lips; buccal cavity followed by bulbous oesophagus having sclerotised apparatus. Excretory pore anterior to hind region of oesophageal bulb. Vulva in equatorial region of body. Prodelphic condition of uterus, oviparous. Eggs 0.101-0.136 x 0.031-0.047 mm. Tail long, 0.456-0.836 mm long, tapering abruptly to pointed end.


Diengdoh (1989) reported the occurrence of Aplectana sp. in R. maximus (=R. nigropalmatus) in North-East India. Tandon et al (2001) also reported the same from Nagaland, constituting a new locality record and added 5 new hosts -Rana livida, R. khare, E. cyanophlyctis, Polypedates leucomystax and Amolops marmoratus. However, in both the cases the collection comprised female specimen only and species identification of the nematode could not be done.

Species of Aplectana are known to occur and are well distributed all over the world among the amphibians (Yamaguti, 1961). (Gupta,1960) described 2 species, A. agubernaculum and A. asiatica from H. tigerinus  and Bufo melanostictus. In a study both male and female forms were collected with another new host record-Philautus sp. and Rana danielii. In having a bulbous oesophagus, female with prodelphic condition of uterus and vulva near middle of body; and absence of gubernaculum in the male, the nematode in the present collection tally with the species described by Gupta (1960). The present form is therefore identified as Aplectana agubernaculum.

Helminthological collections record



Gupta, S. P. (1960). Nematode parasites of vertebrates of East Pakistan. VI. Amplicaecum cacopi, Thelandros sp., Rhabdias ranae  and Oswaldocruzia melanosticti sp. nov. from frogs. Canadian Journal of Zoology.38:pp 748 - 750 .

Diengdoh, C.R.(1989). Helminth Parasite Spectrum of Amphibian Hosts in Meghalaya. Ph.D. thesis. North-Eastern Hill University (N.E.H.U.) Shillong. pp 129.

Tandon, V., Imkongwapang, R. & Kar, P.K. (2001). Helminth infracommunities in anuran Amphibia of Nagaland. Journal of Parasitic Diseases 25, 8–20.

Yamaguti, S. (1961). Systema Helminthum. Vol.3 (I & II). Originally published by Interscience Publishers, Inc., New York and London (reprinted  edition. International Books & Periodicals Supply Service, New Delhi). pp  679 & 1261.