symbiosis 5

• Symbiosis

  The co-evolved intimate relationships between members of two different species
• Types of symbiotic relationship

  • Parasitism
  • Mutualism
• Parasitism

  A parasite will benefit in terms of energy or nutrients, where its host is harmed by the loss of these resources
• Parasites

  • Often have a limited metabolism and cannot survive out of contact with the host
  • Are transmitted to new hosts through: direct contact, resistant stages, vectors
• Parasitic life cycles

  Involve intermediate (secondary) hosts to allow them to complete their lifecycle
• Mutualism

  When both partner species benefit in an interdependent relationship