Monarch butterflies expanded their reign in Mexico during 2014 and occupied 1.13 hectares of forests, reported the World Wide Fund for Nature (WWF), a civil association dedicated to protecting the environment.
"During the second half of December 2014, nine colonies of monarch butterflies were registered, three in Michoacán and six in the State of Mexico", reported Omar Vidal, director of WWF. The increase is 68.7% compared to the previous year, although experts warn that "It is still the second smallest area occupied by these butterflies in Mexican sanctuaries since 1993."
In 2013, the species reached a record low, using only 0.67 hectares.
Experts point out that the increase in the population of monarch butterflies is due to favorable weather conditions in the United States and Canada, as well as the fact that their predators have decreased. However, they warned that the species is in danger because its main food, milkweed, is in short supply due to the use of herbicides.
OPINION: NAFTA leaders could help the monarch butterfly Illegal logging has also contributed to the reduction of these insects, which reach the national territory each year after traveling from Canada. Vidal explained that fluctuations in the number of these species is normal, although since 2004 there has been a downward trend in our winged visitors.