Hi, welcome to this blog on the Topic: Life cycle of Roundworm.
Table Of Contents
- Meaning Of roundworm
- Life cycle of roundworm
- Economic importance of roundworm
- Control of roundworm
- Revision Questions
Roundworm (Ascaris lumbricoides)
Meaning: Roundworm is an elongated, cylindrical, white worm which is pointed at both ends. The body is smooth and is covered by thick, tough cuticle of few centimeter long.
Life Cycle Of Roundworm
The eggs are fertilized in the female worm and the larvae developed within the egg shell. The eggs are deposited in the intestine of pig from where they are passed out with the Host faeces into soil where it can remain for many years. When the eggs are picked up by pigs, either through feeding or drinking, the eggs shells are dissolved by digestive enzymes and the young larvae emerge.
The larvae then Pierce through the intestine wall to the blood, then to the liver, the heart and then to the lungs. From the lungs, they piece into the mouth and throat of the pig. From the throat, the larvae are swallowed through the gullet into the intestine. Here the larvae develop into mature worms and the life cycle is repeated all over again.
Effects or Economic Importance of Roundworm
- They reduce the growth of host animals.
- High infestation can affect the respiration of host animals.
- It causes indigestion and constipation
- It results in loss of appetites, weakness and may result in death.
- It destroys many of the organs during the migration of the young worms.
Control of Roundworm
- The pigs should be dewormed with piperazine drugs regularly.
- Good sanitation of the environment should be maintained.
- Clean and uncontaminated water and feed should be provided for animals.
Revision Questions
- Explain the meaning of roundworm
- What are the life cycle of roundworm?
- List the economic importance of roundworm
- State the control measures of roundworm.
In our next class we are going to be studying about the life cycle of Tapeworm, click here to join.