Parasites that live outside the host are called ectoparasites (Figure 2A). For example, a flea is a parasite that lives on cats. In contrast, parasites that live inside their hosts are known as endoparasites (Figure 2B). 29 окт. 2018 г.
How long can parasites live outside the body?
Giardiasis is a diarrheal disease caused by the microscopic parasite Giardia duodenalis (or “Giardia” for short). Once a person or animal has been infected with Giardia, the parasite lives in the intestines and is passed in stool (poop). Once outside the body, Giardia can sometimes survive for weeks or even months.
Can parasites survive only in a living host?
Doting on Dodder. They're called obligate parasites, and they have completely lost the ability to make their own food. In short, they are the freeloaders of the botanical world. A few of these obligate parasites even take it a step further and live entirely within their hosts!
Can parasitic worms survive outside the body?
Tapeworms can live outside for months, waiting for a host to come along. You're most at risk if you work around livestock or travel to a country where hygiene is poor. You can also be infected if you eat or drink something that contains tapeworm eggs or larvae, like raw or undercooked beef or pork.
Why can parasites not survive without their host?
Parasitism is the relationship between a parasite and its host. The parasite benefits by gaining nutrients and/or energy from the host. The host is harmed by losing energy and/or nutrients. Parasites often have a very limited metabolism and cannot survive out of contact with a host.
More useful articles on a similar topic 👇
Do worms lay eggs or live birth?Can worms live outside the body?
