TNPSC Thervupettagam

Mass Migration of Blue Earthworms

February 24 , 2021 1244 days 861 0
  • The Zoological Survey of India (ZSI) has prepared a report on two-way mass migration of the blue earthworms in the state of Meghalaya.
  • The Uphill migration of the earthworms starts in April-May.
  • With the onset of monsoon, they emerge from the rivers and streams.
  • Downhill migration occurs during September-October when the vegetation starts to dry and temperature & humidity drop.
  • The scientific name of the blue earthworm is Perionyx excavates.
  • It is also called as composting worms, blues, or Indian blues.

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