Abstract:
This study was carried out to detennine habitat, morphology and internal
anatomy of the leech. Leeches most abundance can be found when pH is 5. 7 6.3.
No
available
leeches
are
found
when
pH
below
5.0.
In
middle
paddy
fields,
there
are
no
leeches
because
most
of
the
leech
rest
near
the
shore
to
wait
for
prey
before
sucking
the
blood.
Leeches are prefers to live in no moving current and
suitable substrates likes plant are important for the leech to reproduction and
movement. For morphology of the leech, the body are dorso-ventrally flattened,
have 34 segments, 3 pair of eyes and two sucking disks at the end of the anterior
and posterior. Hirudinaria manillensis has 4 yellow stripes at the dorsal and
contains three set of jaws to make Y shape incision. The underside of the leech is
typically lighter in color than the backside. Anus of the leech can be found on the
midline to the edge of the posterior sucker.
