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Short Answer:
BT corn is a serous threat to the extinction of the Monarch. BT does not kill the Monarch, it kills the food the larva lives on, milkweed. (BT is one part of the overall habitat destruction problem; one problem of many, but maybe the one that can't be stopped before it is too late.)
Explanation:
The monarch butterfly is the subject of strong predation. Lots of things like to eat it or the eggs. (Not all monarchs are poison carrying.) The number of monarchs was in the hundreds of millions a few decades ago. The dramatic drop is due to habitat loss in Mexico and habitat loss over the migration region. It is in the migration region that it is getting hard for the butterflies to find the milkweed to lay their eggs on. A mere ten years ago, the vast fields across the US would have the occasional milkweed plant. Not any more.
BT keeps the corn fields clean, but the effectiveness of other weed control measures has gotten better too. With Monarchs as with any member of any ecosystem, this gets complicated and it has been very unproductive to members of either side pointing individual fingers at individual factors and proclaiming them guilty. It is a system and a system that is out of balance.
Traditional habitat loss, more houses and concrete and forest turned to farmland, have been progressively infringing for years as well as the problem protecting the winter site in Mexico. But, in the last few years some very negative population dynamics have been observes and extinction will occur in our lifetime. For tens of thousands of years, monarchs have been making the trek from Mexico to Canada and that is pretty nearly over with the advent of genetically modified crops.
What else can I help you with?
Why are monarch butterfly endanger?
According to the WWF and the IUCN, Monarch Butterflies are not currently endangered. However, their migratory patterns are at risk because their routes are endangered due to habitat loss. Illegal deforestation of their overwintering grounds is the greatest current threat. Logging of their traditional wintering grounds means the butterflies have fewer places to rest during winter. Not only that, but such habitat loss reduces their supply of milkweed, a key component of their diet. There is some evidence, too, that chemicals used to kill milkweed also affect the caterpillars and adult Monarch Butterflies. Efforts to protect the Monarch Butterfly are underway, with laws being passed in areas of Mexico and California that protect parts of the monarch butterfly's habitat.
What makes butterflies that eat milkweed dangerous to there preditors?
The monarch caterpillar is at a high risk when they eat Milkweed. Milkweed got its name because its full of a sticky milk colored liquid. Many caterpillars get stuck in it and die. The caterpillars that eat milkweed are immune to a special toxin in the milkweed but still are at risk of dying in the sticky liquid. Butterflies do not eat milkweed. They drink nectar from flowers or juice from fruits.
Who is doing a better job with the monarch butterflies Canada or Mexico?
None; both are guilty of threatening the species. Canada is the 10th largest emitter of greenhouse gases in the world, accelerating climate change, which in turn means greater risk of parasites, predators and disease killing off the migrating butterflies; Mexico also has a poor record of protecting the species by allowing illegal logging to reduce the Winter sanctuaries.
Are the blue morpho butterflies extinct?
According to the WWF, Monarch butterflies are not endangered. However, their migratory patterns are at risk because their routes are endangered due to habitat loss.yes
Does using a condom eliminate the risk of contrsting STD's?
Eliminate the risk? No. But it will greatly REDUCE the risk.
Can cattle get sick from eating corn?
If they are fed a balanced amount of corn and roughage, they will not become ill. However, if they gorge or are fed too much corn without a source of roughage, an increase risk of bloat or other digestive problems may occur.
What Funny sentences using the words shark risk sink?
Risk
What is the risk of using a car?
crashing
Is it true that using a cast iron skillet can increase the risk of cancer?
No, using a cast iron skillet does not increase the risk of cancer.
What are the potential risks of giving corn cobs to dogs?
Feeding corn cobs to dogs can pose a risk of choking, intestinal blockage, and digestive issues due to their size and indigestible nature. It is best to avoid giving corn cobs to dogs to prevent these potential health hazards.
How does butterfly protects itself?
Butterflies have several means of protecting themselves. Firstly, some are very bright colours. Predators often assume that a bright colour means poisonous. The predator will leave brightly colour prey alone, rather than risk being poisoned. Secondly, a lot of butterflies have what look like eyes on their wings. These eyes appear like larger scarier animals than the predator. This will often deter the predator from attacking.
What is the risk of using marijuana?
enjoying yourself
