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The monarch butterfly or simply monarch (Danaus plexippus) is a milkweed butterfly ... thus people should not take steps to kill predators of monarchs. ...
Since then, it has been found in every monarch population examined to date, including monarchs sampled in North America, Hawaii, Australia, Cuba, and Central and South America. Dormant spores occur on the cuticles of butterflies, in between the butterfly's scales. They are small, brown or black objects about 1/100 the width of a butterfly scale.
Toxicity for the monarch butterfly, ... The most publicised problem associated with Bt crops is the claim that pollen from Bt maize could kill the monarch butterfly. ...
I don’t really know. David Wagner says, in his experience, they are feeding on different stages of milkweed, monarchs preferring new shoots and milkweed tussock moths content with older ...
Monarch butterflies, known for migrating thousands of miles (km) across North America, have experienced a decades-long U.S. population decline due to habitat loss caused by human activities such ...
The U.S. Fish and Wildlife Service is pushing for added protections for the monarch butterfly after seeing a population decline of about 80%. The service announced a proposal to list the butterfly ...
In the monarch's case, the proposed listing would generally prohibit anyone from killing or transporting the butterfly. People and farmers could continue to remove milkweed, a key food source for monarch caterpillars, from their gardens, backyards and fields but would be prohibited from making changes to the land that make it permanently ...
Cardenolide toxins sequestered during the Monarch's larval stage from feeding on the plant remains in the adult, making it unpalatable to predators. Chemical defense is a strategy employed by many organisms to avoid consumption by producing toxic or repellent metabolites or chemical warnings which incite defensive behavioral changes.
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