What does it mean if biological control is described as self-sustaining after establishment?

What does it mean if biological control is described as self-sustaining after establishment?

• A. The pest population can be kept in check without further releases.
• B. Frequent reintroductions are necessary.
• C. It will eliminate all pests immediately.
• D. It has no ecological impact.

Answer: (B)

Self-sustaining after establishment means the biocontrol agent persists in the environment on its own after it’s released. Once it establishes a stable population, it continues to reproduce and survive, providing ongoing pest suppression without the need for repeated releases. You’ll typically see the pest be kept in check over time rather than needing constant reintroduction, and while pests aren’t guaranteed to be wiped out immediately, the control becomes self-maintaining. In other words, the key idea is long-term suppression driven by an established, self-perpetuating biocontrol population rather than continued releases. It doesn’t imply no ecological impact, and it doesn’t promise immediate elimination of all pests.

Self-sustaining after establishment means the biocontrol agent persists in the environment on its own after it’s released. Once it establishes a stable population, it continues to reproduce and survive, providing ongoing pest suppression without the need for repeated releases. You’ll typically see the pest be kept in check over time rather than needing constant reintroduction, and while pests aren’t guaranteed to be wiped out immediately, the control becomes self-maintaining.

In other words, the key idea is long-term suppression driven by an established, self-perpetuating biocontrol population rather than continued releases. It doesn’t imply no ecological impact, and it doesn’t promise immediate elimination of all pests.