Q. Consider the following :

  1. Carabid beetles
  2. Centipedes
  3. Flies
  4. Termites
  5. Wasps

Parasitoid species are found in how many of the above kind of organisms?

  • Only two
  • Only three
  • Only four
  • All five

Answer: (b) Only three

Parasitoid Species:
  • Parasitoids are organisms, typically insects, that spend their immature stages within or on another organism (the host), eventually killing it.
  • They are distinct from predators because they rely on a single host for development and reproduction, and unlike parasites, they ultimately kill the host.
  • Most parasitoids are wasps or flies, but some beetles, moths, and other insects also fall into this category.
  • Examples of Parasitoid Species:
    • Wasps:
      • Many wasp species are parasitoids, including Ichneumonid wasps, Encyrtid wasps, Trichogramma wasps (egg parasitoids), and Aphelinid wasps.
    • Flies:
      • Tachinid flies are a notable example of parasitoid flies.
    • Beetles:
      • Some beetles, like the larval parasitoid Netelia producta (Orange caterpillar parasite), are also parasitoids.
    • Other insects:
      • While less common, some species of butterflies, moths, lacewings, and even caterpillars can also be parasitoids.
Difference Between Parasites and Parasitoids