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Decline in Monarch butterfly population

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  • Published
    21st Aug, 2020
  • There has been a decline in the population of Monarch butterflies.
  • The study favours the declining numbers due to the ‘milkweed limitation’ hypothesis.
  • The hypothesis has a view that the decline in habitat loss was because of the increasing use of glyphosate herbicide on corn and soybean fields in the Upper Midwest region of the US.
  • The monarch butterfly is the most familiar North American butterfly.
  • It is considered an iconic pollinator species.
  • Its wings feature an easily recognizable black, orange, and white pattern, with a wingspan of 8.9 – 10.2 cm.
  • Famous for their seasonal migration, millions of monarchs migrate from the US and Canada south to California and Mexico for the winter.
  • Monarchs have been bred on the International Space Station.

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