NEIHPID

Fischoederius cobboldi (Stiles et Goldberger Stiles et Goldberger) Poirier 1883 Back

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Taxonomy

Platyhelminthes »
       TREMATODA »
              Digenea »
                     Gastrothylacidae Stiles et Goldberger, 1910 »
                            Gastrothylacinae Stiles et Goldberger, 1910 »
                                   Fischoederius Stiles et Goldberger, 1910 »
                                           Fischoederius cobboldi (Poirier 1883), Stiles et Goldberger 1910

Host

Bos (indicus), Bubalus (bubalis), Capra (hircus), Ovis (aries)

Habitat

Rumen

Locality

Guwahati (Assam), Shillong (Meghalaya), Tura (Meghalaya), Jowai (Meghalaya), Dharmanagar (Tripura)

Description

Body elongated, 7.77-17.71 mm in length, 5.65-8.40 mm in width, ratio of body width to body length 1:1.37-1:2.13. Ventral pouch present, reaching up to level of ovary or testicular region. Acetabulum terminal, 3.25-5.65 mm in external diameter; ratio to body length 1:2.39-1.3.88; of gastrothylax type (sensu Näsmark, 1937) in median sagittal section; units of dorsal and ventral circular muscles in lateral sides as follows : d.e.c.m. 89-107, d.i.c.m. 85-91, v.e.c.m. 91-99, v.i.c.m. 78-89. Pharynx 0.67-0.99 mm in length, 0.76-0.93 mm in breadth; ratio to body length 1:11.59-1:17.88, to diameter of acetabulum 1:4.06-1:5.70; of calicophoron type (sensu Dinnik, 1964) in median sagittal section. Oesophagus 0.81-1.35 mm in length, 's'-shaped. Caeca reaching up to anterior border of acetabulum. Testes irregular, tandem, in pre-acetabular median field; anterior testis 0.67-2.75 mm in length, 0.85-4.06 mm in width; posterior testis 0.63-2.03 mm in length, 1.31-4.38 mm in width. Ovary 0.90-1.13 mm by 0.45-1.22 mm. Vitellaria sparsely scattered follicles in ventro-lateral regions, extending from level of oesophageal bifurcation to anterior margin of acetabulum. Terminal genitalium of microbothrium type (sensu Näsmark, 1937); genital pore pre-bifurcal.

Remarks

F. cobboldi has also been reported from various places from India such as Bengal and Assam (Mukherjee and Chauhan, 1965), Madras and Bombay (Gupta and Dutta, 1967a), and Andhra Pradesh (Hafeez and Rao, 1980).Â

The present observations tally to a great extent with those of Sey (1983) and other Indian authors. However, a great deviation from Näsmark's (1937) and Gupta and Dutta,'s (1967b) observations has been found with regard to acetabular circular muscles units.

Helminthological collections record

NEHU/ - TM/24

Specimen Type

Holotype: W7757/1 in Zoological Survey of India, Kolkata.

References

Mukherjee, R. P. and Chauhan, B. S. (1965) Studies on the trematode fauna of India. Part V. Sub-class Digenea: Paramphistomidae Fischoeder (1901). Journal of the Zoological Society of India. 17:pp 151-225.

Gupta, N. K. and Dutta, T. (1967a). On Fischoederius cobboldi - A pouched amphistome from cattle in India. Research Bulletin (N.S.) of Panjab University. 18:pp 41-52.

Hafeez, Md. and Rao, B. V. (1980) Check-list of Amphistomes from cattle and buffaloes in Andhra Pradesh. The Veterinarian. 4:pp 5.

Sey, O. (1983). Revision of the family Gastrothylacidae Stiles et Goldberger, 1910 (Trematoda:Paramphistomata). Acta Zoologica Academiae Scientiarum Hungaricae. 29:pp  223-252.

Näsmark, K. E. (1937) Revision of the trematode family Paramphistomidae. Zoologiska Bidrag fran Uppsala. 16:pp 301-565.

Gupta, N. K. and Dutta, T. (1967b). On Gastrothylax crumenifer - a common pouched amphistomid parasite of ruminants in India. Research Bulletin (N.S.) of Panjab University. 18:pp 369-377.