Some aspects of the bicnomics of mecistocirrus digitatus ( vcn linstow) In Peninsular Malaysia
Loading...
Date
1978-11
Authors
Cheow Yong, Song
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Mecistocirrus digitatus (von Linstow, 1906) Railliet and
Henry, 1912, is a commonly occuring helminth parasite in cattle,
causing gastro-enteri t1 s. .. The parasite has not been previously
described in Malaysia, and few studies have been done on the
bionomies of the preparasitie stages. In the present studies,
the worm is identified; its incidence as seen in the slaughterhouse
is recorded over a two year period; and the effect of temperature
on hatching, am rate of development, as well as the morphology
of the preparasitic stages are studied.
The worm in Peninsular Malaysia is !i• digitatus though
the dorsal· lobe of the male bursa is bilobed. The incidence
of the worm in slaughtered cattle is 8.8% and in buffaloes is
0.5%. Sheep and goats are not infected. Infection is related
to breed and age. Hatching and the rate of developmed: occur
rli
within a narrow range of temperatures (20° to 35°C). The
survival of the preparasitic stages is also poor outside this
range. The infective stage is easily recognisable because of
its very short tail, the presence of a pair of dark brown
granules at the anterior end and a second inner cuticle within
the ensheathed larva. Experimental infections were successfully
established in calves but not in the mousedeer, rabbits and mice.
Adult male and female worms were recovered from the abomasum.
Description
Keywords
Mecistocirrus digitatus ( vcn lin stoll) , Peninsular Malaysia