Question

What is one reason that using a parasite in an attempt to control an invasive host species might be problematic?

1) Parasites must infect a native vector organism to reach the invasive species.
2) Non-native parasites become more lethal as the invasive species dies off.
3) Over time, the parasite may become less deadly to the invasive species.
4) Invasive species have naturally high resistance to all parasites.

Answer 1

Using a parasite to control an invasive host species can be problematic due to various factors, 1) including the need for a native vector organism, increased lethality as the invasive species dies off, decreased effectiveness over time, and the resistance of invasive species to parasites.

Step-by-step explanation:

Using a parasite to control an invasive host species can be problematic for several reasons. First, parasites may require a native vector organism to reach the invasive species, which may not be available in the new location. Second, non-native parasites can become more lethal as the invasive species dies off, causing unintended consequences. Third, over time, the parasite may become less deadly to the invasive species, potentially allowing it to recover. Finally, invasive species often have naturally high resistance to parasites, making control difficult.