Alternative Migration Strategies Part of Monarch Decline?


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 03 January 2019

BUTTERFLIES

The Mighty Monarch Butterfly
Monarch butterfly, Wiki, by Kenneth Dwain Harrelson
Monarch butterfly, by Kenneth Dwain Harrelson

Alternative Migration Strategies Part of Monarch Decline?

Fewer monarch butterflies are reaching their overwintering destination,
De Gruyter, January 2, 2019.

MAIN POINTS

Dwindling Numbers of Monarchs
“...monarch butterfly, is currently experiencing dire problems with its migration in eastern North America.”

“Fewer and fewer monarchs are successfully reaching their overwintering destinations, and scientists aren’t sure why.”

Why?

Some midwestern monarchs are overwintering in Florida, rather than Mexico.

An Issue?
"...“alternative” overwintering locations..."

 

Bottom Line

Are alternative Migration Strategies Part of Monarch Decline? Maybe a small part, but we can find a majority of the disruptions in climate and ecological changes, supercharged by the widespread use of Roundup, as shown by the research below...

 

Earlier Research

Florida Monarch Butterflies dropped 80 percent since 2005

Pesticide-fueled milkweed decline, along with climate-induced changes in milkweed blooming times.

 

 

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Monarch butterfly, decline, how much is due to alternative migration strategies?

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