With the increased awareness of the importance of butterflies in ecosystems, there is now an industry of commercial butterfly breeding operations, which includes the Monarch butterfly among them.
This is in addition to the popularity of raising Monarchs in homes or as school projects, for example.
One issue that can arise from ‘mass rearing’ (more than 100 caterpillars in a setting) is the potential spreading of diseases, which can then contaminate wild populations. Another one is the potential decrease of the adult butterfly capacity to migrate successfully.
There are many ways Monarch populations can be increased. An important one would be to restore, increase and protect their natural habitats, and creating new ones, for example by planting Milkweed, the Monarch caterpillar exclusive food source.
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