 |
| leech |
Leeches which are rather slimy worms and
vary in length from an inch to several inches, have two suckers, a big one at
the rear and a smaller one at the mouth and they have powerful muscles which enable them to expand and contract their bodies.
This makes them excellent swimmers. They
can also use their suckers to crawl on the land. In the tropical Asia, the
islands of pacific and the Indian ocean, there is a particularly vicious and
the dreaded species of land leech which enters the breathing passage of
animals, gorges on the animals blood and swells that it cannot escape.
Aquatic or water leech s cling to fishes,
turtles and shell fish. Some leeches cling to fishes, turtles and shellfish.
Some leeches feed on earthworm s and frogs eggs. Others live on the larvae of
insects and even on the microscopic life on the floor of the ponds. Leeches have been used in medicine from
early times until quite recently to draw blood from a patient.
No comments:
Post a Comment