International Journal of Marine Science 2015, Vol.5, No.15, 1-3
2
Result and Discussion
As investigation was done for identification of the
Trematoda fauna currently occurring in
Psettodes
erumei
and
Sillago sihama
in Arabian Gulf, two
parasites were found in the intestine of the dissected
fishes.
Lepocreadioides orientalis
Parker, 1939 Figure 1
Figure 1 Camera Lucida drawing and photograph of
Lepocreadioides orientalis,
ventral view. Scale bar 0.5mm
Description based on two specimens.
Site of infection: Intestine.
The body is sub oval. Length 1.3-1.7 (1.5) and width
0.813-0.852 (0.832) mm. Cuticular spines are not
present, sub terminal oral sucker measures
0.151-0.191(0.171) mm in diameter, the pre-pharynx
is absent, but a pharynx is present and measures
0.197- 0.2 (0.198) mm length mm and 0.151-0.192
(0.171). The esophagus is smalland bifurcates into two,
simple, wide caeca, which terminate blindly a little in
front of the posterior extremity. Genital pore ventral to
the anterior border of the acetabulum.
The acetabulum is oval-shaped and measures
0.303×0.30 mm in diameter. It is situated at the base
of the anterior third of the body. The testes are two
longitudinal and equal in size, one on either side of the
body. They lie close behind the anterior half of body.
The anterior testis measures 0.279-0.301 (0.29) mm in
length. 0.162-0.201 (0.181) mm in width. The
vitellaria are composed of small, irregular follicles
extending along the caeca from the level of the
intestinal bifurcation to their blind ends, where they
turn round and extend up to the level of the seminal
receptaculum. Many eggs spread throughout the level
of acetabulum parasite body. Eggs are thick-shelled,
operculated.
Lepocreadioides
sp.
Figure 2
Figure 2 Camera Lucida drawing and photograph of
Lepocreadioides
sp., ventral view, scale bar 0.5mm
Description based on two specimens.
Site of infection: Intestines.
The body is sub oval and measures 1.2-1.6 (1.4) mm
in length and 0.71-0.92 (0.82) mm in width. Cuticular
spines are not present, terminal oral sucker measures
0.11×0.10 mm in diameter, the pre-pharynx is absent,
but a pharynx is present and measures 0.17 ×0.19 mm.
Genital pore ventral to the anterior border of the
acetabulum .The esophagus is small and bifurcates
into two simple wide caeca, which terminate blindly a
little in front of the posterior extremity.
The acetabulum is oval-shaped and measures 0.22×
0.21 mm in diameter. It is situated at the base of the
anterior third of the body .
The testes are two, longitudinal and sub equal in size,
one on either side of the body, and they lie close
behind the anterior half of body and measuring 0.22 ×
0.112. The vitellaria are composed of small, irregular
follicles extending along the caeca from the level of
the intestinal bifurcation to their blind ends, where
they turn round and extend up to the level of the
seminal receptaculum. Many eggs spread throughout
the level of acetabulum parasite body. Eggs are
thick-shelled, operculated.
