Heligmonella asymmetrica female
Super-family: Heligmosomoidea
Family: Heligmonellidae
Sub-family: Heligmonellinae
Synonymy:
= Longistriata asymmetrica, Durette-Desset, 1969
Author and date: (Durette-Desset, 1969), Durette-Desset, 1971
Parasite of Atherurus africanus, Hystricidae, Mammalia
Locality: Loukapon (Democratic republic of Congo)
Location: small intestine
Collection : Collections of Museum national d'Histoire Naturelle de Paris; n°
Reference: Durette-Desset, 1969, Cahiers de la Maboké, 7: 109-130.(personal reference n°27)
Atherurus africanus (host).
Anterior part of Heligmonella asymmetrica female, rigth lateral view.
Anterior part of Heligmonella asymmetrica female, rigth lateral view.
Anterior part of Heligmonella asymmetrica female, left lateral view.
Synlophe of Heligmonella asymmetrica female.
Posterior part of Heligmonella asymmetrica female, right lateral view .
Posterior part of Heligmonella asymmetrica female, left lateral view.
Posterior part of Heligmonella asymmetrica female, ventral view.
+
Classification
Generality of the parasite
Whole body
Cephalic characters
- Presence of cephalic vesicle : Yes
- Width of the cephalic vesicle (in middle) : 41 to 50 µm
- Number of internal labial papillae : ?
- Number of external labial papillae : ?
- Presence of cephalic papillae : ?
- Length of the cephalic vesicle : 81 to 90 µm
Anterior part
- Position of the nervous ring from the anterior end : 251 to 300 µm
- Position of the excretory pore from the anterior end : 401 to 450 µm
- Position of deirides from the anterior end : 401 to 450 µm
- Length of the oesophagus : 401 to 450 µm
- Ratio length of the oesophagus over the total length : 6 to 10%
- Excretory glands : Visible
Synlophe at midbody
- Number of cuticular ridges at midbody : 11 to 15
- Size of ridges : 1 to 10 µm ; 11 to 20 µm ; 21to 30 µm ; 31 to 40 µm
- Axis of orientation of the synlophe : 2 axes
- Right axis : 31 to 40°
- Left axis : 71 to 80°
- Appearance of ridges : On the posterior edge of the cephalic vesicle
- Nature of the ridges : Continuous ridges ; Longitudinal ridges
- Number of dorsal ridges at midbody : 1 to 5
- Disappearance of the cuticular ridges in the female : Before reaching the vulva ; At level of the vulva
- Disappearance of the cuticular ridges in the male : non applicable
- Only a general axis : non applicable
- Number of ventral ridges at midbody : 1 to 5
- Presence of a gradient of size of the cuticular ridges : Gradient on dorsal face
Reproductive tract of the female
- Presence of egg : Yes
- Length of egg : 81 to 90 µm
- Width of egg : 46 to 50 µm
- Number of egg : 6 to 10
- Length of vestibule : 51 to 100 µm
- Sex of the nematode : Female
- Length of vagina vera : 41 to 50 µm
- Length of the tail : 61 to 80 µm
- Position of the vulva from the posterior end : 101 to 150 µm
- Length of anterior sphincter : 31 to 40µm
- Length of anterior uterus : 1001 to 1500 µm
- Presence caudal pointed tail : Yes
- Length of anterior infundibulum : 126 to 150 µm
Reproductive tract of the male
- Sex of the nematode : Female
- Height of the division of the dorsal ray : non applicable
- Length of the rays 9 in ratio to the rays 10 : non applicable
- Diagram of rays 2 to 6 (left lobe) : non applicable
- Disposition of types of bursal arrangements in lateral lobes : non applicable
- Length of rays 2 to 6 : non applicable
- Birth of rays 8 : non applicable
- Length of the rigth spicule : non applicable
- Length of the left spicule : non applicable
- Shape of the spicules : non applicable
- Number of tips of the spicules : non applicable
- Shape of the genital cone : non applicable
- Length of genital cone : non applicable
- Presence of papilla 0 on anterior lip of genital cone : non applicable
- Presence of papillae 7 on posterior lip of genital cone : non applicable
- Presence of gubernaculum : non applicable
- Width of gubernaculum : non applicable
- Asymmetry of the caudal bursa : non applicable
- Height of the asymmetry : non applicable
- Width of asymmetry : non applicable
- Diagram of rays 2 to 6 (right lobe) : non applicable
- Dorsal lobe visible : non applicable
- Diagram of basic pattern of the caudal bursa (lobes left and right are symmetric) : non applicable
- Tendency of the diagram ( lobes left and right are symmetric) : non applicable
- Tendency of diagram (left lobe) : non applicable
- Tendency of diagram (right lobe) : non applicable
- Presence of the prebursal rays (= rays 1) : non applicable
- Approaching rays 5 to 6 : non applicable
- Ratio length between ray 8 and dorsal ray : non applicable
- Position of the rays 9 : non applicable
- Form of gubernaculum : non applicable
- Length of gubernaculum : non applicable
- Symmetry of the caudal bursa : non applicable