What does "Transmissible Cancers" mean?
Table of Contents
Transmissible cancers are types of cancer that can spread from one animal to another. Instead of being limited to one individual, these cancers can move through a group and infect multiple hosts. This unusual form of cancer has been seen in various species, including Tasmanian devils, dogs, and different kinds of shellfish.
How They Spread
The way transmissible cancers spread is quite different from regular cancers. For them to infect new hosts, they must overcome the body's defenses. They can move from one animal to another through physical contact or other means, all while resisting the immune response of the new host.
Impact on Shellfish
In recent studies, transmissible cancers have been found in shellfish like the basket cockle and soft-shell clam. These cancers can affect the populations of these species, which are important for local cultures and diets.
Survival Mechanisms
Research shows that these cancers have developed ways to survive outside their original host. They can react to stress and adjust to harsh conditions, like being in seawater. Some responses are similar to those seen in healthy shellfish, hinting at potential natural defenses within the animals.
Importance of Management
Understanding transmissible cancers is crucial for managing shellfish populations. Recognizing these cancers can help in efforts to raise healthy stocks and maintain the cultural and dietary practices of communities that rely on these species.