Why Does The Butterfly Population Decline

The monarch butterfly, as known as Danaus plexippus, is often called the milkweed butterfly because its larvae eat the milkweed plant. They are also sometimes called "royalty butterflies" because their family name comes from the daughter of Danaus, ruler of Argos. There are many other interesting facts about this butterfly including its anatomy and life cycle, where the butterfly lies on the food chain, the migration from Canada to Mexico, why the butterfly is being threatened, and lastly, what is being done to help the butterfly.

     Three different things are endangering the monarch butterfly. First, is the deforestation of Mexico. Through illegal logging of the forests and the thinning of the canopy the monarchs are left vulnerable to the elements including frost and freezing rain (Wexler, 2004). Second, is a genetically engineered corn. The corn is engineered to be insect

Sadly, the monarch butterflies are drastically decreasing due to the fact that the plant they need to survive, the milkweed plant, is slowly but surely diminishing.

As a result of "human emissions of greenhouse gasses," numerous species of butterflies worldwide are facing the risk of extinction (World Wide Fund). Global warming is the gradual heating of the planet, which is triggered by human activities such as pollution from factories, results in climate change around the world (Rogers). Due to climate change, various species of butterflies need to adapt to these changes, but instead, they are dying out due to their sensitivity to fluctuating temperatures (Rogers). In the United Kingdom, scientists predict that “for every 1 °C increase in southwestern Europe’s temperature, some 14 different species of migratory butterflies and moths are forced to make the leap to England to cool off, which means making a long journey over open water” (Rogers). Climate change has required many species of butterflies to leave their migration paths and cross the treacherous oceans; this increases their risk of death

Bee decline is an increasing issue in the United states of America. An article written by the University of Vermont reveals a map of over 139 troubled zones for the population of bees and why they might be endangered. The University of Vermont is a well-respected establishment when it comes to research and Agriculture.

The monarch butterfly is a milkweed butterfly in the family Nymphalidae. It’s like the king of all butterflies. They all carry a proboscis that gets nutrients from plants. Their scientific name is Danaus Plexippus. To them we are predators. Monarchs are found all over North America. New Zealand, Australia , and the Canary Islands( Wikipedia https://en.wikipedia.org/wiki/Monarch_butterfly.)

I enjoyed my many years of participation in the Monarch Larvae Monitoring Project. Milkweed is the larvae's host plant. Unfortunately common milkweed (asclepias syriaca) has not done well

The reading passage tries to give some reasons to show that the number of sea otters, a small mammal living along the western coast of North America, has significantly declined because of the environmental pollution. On the other hand, the professor on the lecture looks at this concept through a different lens and believes that attacking by the predators like orca are possible for this problem.

The diamondback moth is an invasive species that is believed to have originated in Europe. Since it was not originally native to New York, it has few natural predators, so the population can easily spiral out of control. It is brown and tan in appearance and is somewhat elongated in shape. Females lay approximately 150 eggs at a time, but they can lay up to 300. In addition, the moth only lives for up to 16 days. This may not seem like a long time to us because we live for decades, but the diamondback moth is laying eggs for ten out of those sixteen days (Capinera, 2000). Now think about it. That’s a lot of larvae in a short amount of time. This can be a big problem for farmers, especially because the problem comes in the form of a common moth. There are so many moth varieties in New York that it is almost impossible to know all about each one, and that is why farmers like me who live all around New York have an even tougher

Monarch butterflies depend solely on the milkweed plant to survive. Milkweed, however, has been disappearing like crazy due especially to increased use of the weed killer Roundup over the past ten to twenty years. That, combined with more general trends of habitat loss, various effects of climate change, and challenges like the drought in California, has spelled out around a ninety percent population decline for monarchs in the past twenty years. Scientists currently estimate a global population of around 33 million monarch butterflies, down from over one billion in the past.

While society has impacted this alteration, climate change has also made a significant imprint. This study “assesses the extinction risks to species within an important genus of pollinating bees by estimating the expected changes in the area and isolation of suitable habitat under predicted climatic condition for 2050.” (Roberts, S. P., Potts, S. G., Biesmeijer, K., Kuhlmann, M., Kunin, B., & Ohlemüller, R., 2011) Climate change has caused bees to migrate from their native environments. The loss of these bees have begun to effect various types of plants, some of which are beginning to perish. Therefore scientist are in pursuit of a suitable habitat. One in which expresses the origin of edible plants, as well as climatic suitability. (Roberts, S. P., Potts, S. G., Biesmeijer, K., Kuhlmann, M., Kunin, B., & Ohlemüller, R.,

The oldest known bee fossil is estimated to be over 135 million years old (The Xerces Society). Knowing this, one would certainly realize the importance of the relationship between plants and bees, as they have depended on each other for survival for such an immense period of time. The colossal variety of plant species are around today on behalf of the pollinators that evolved with them. However, this knowledge has not quite convinced society of the dangers the decline in bee populations pose to life as one knows it, as the loss of plants causes a dangerous chain reaction. At the curtains of every winter, a dwindling number of bees are making their debut in the thriving spring. The decrease can be seen in how United States beekeepers have lost 40 percent of their colonies since 2006 (Johnston,

The losses of milkweed are only part of the reason why the Monarch population is

Problem: Decreasing Bee population caused by Colony Collapse Disorder (CCD) During the 1980s onwards, the population of the bees had decreased at an alarming rate. The cause of the decline was “due to Varroa and tracheal mites: The first Varroa mite infestation was reported in 1987; tracheal mites were first detected in 1984.” [8] These die-offs forced many bee-keepers out of employment. These die-offs during the past were called by various names: “spring dwindle disease, fall dwindle disease, autumn collapse, May disease and disappearing disease.”[3]

There are several different species of insect pollinators, but the bees in general make up sixty-two percent of them. Honeybees make up thirty-nine percent of that number, and the other twenty-three is composed of several different species of bees. According to the U.S. Department of Agriculture, one-third of the homo-sapiens diet is insect pollinated and honeybees are accountable for eighty percent of the pollination of that one-third. The population of the honeybees in the United States has been noticeably declining from the late 1990 's, so the threat to the majority of the world food supply is slowly increasing as our pollinators population decreases.