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The object in this picture has taught us a few things about how planetary nebulas can become butterfly-shaped. It seems that a large of amount of gas from a dying star and a second, companion star, are the secret ingredients to creating this spectacular shape! The astronomers found the dust disc to begin about million kilometres from the star — slightly further than the distance from the Sun to Jupiter.

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Extraterrestrial Butterfly Emerges from its Dusty Cocoon 10 czerwca Within its protective casing, the caterpillar radically transforms its body, eventually emerging as a butterfly or moth. But what does that radical transformation entail? How does a caterpillar rearrange itself into a butterfly? What happens inside a chrysalis or cocoon? First, the caterpillar digests itself, releasing enzymes to dissolve all of its tissues. If you were to cut open a cocoon or chrysalis at just the right time, caterpillar soup would ooze out.

But the contents of the pupa are not entirely an amorphous mess. Certain highly organized groups of cells known as imaginal discs survive the digestive process. Before hatching, when a caterpillar is still developing inside its egg, it grows an imaginal disc for each of the adult body parts it will need as a mature butterfly or moth—discs for its eyes, for its wings, its legs and so on. In some species, these imaginal discs remain dormant throughout the caterpillar's life; in other species, the discs begin to take the shape of adult body parts even before the caterpillar forms a chrysalis or cocoon.

Does a butterfly eat the chrysalis after it emerges? | The Children's Butterfly Site

Some caterpillars walk around with tiny rudimentary wings tucked inside their bodies, though you would never know it by looking at them. Monarchs are considered the long-distance champions of butterfly migration, traveling as many as miles round trip. They begin their flight before the autumn cold sets in, heading south from Canada and the northern United States.

Monarchs migrate to the warmer climates of California, Florida and Mexico, making the trip in two months or less and feeding on nectar along the way. Once arriving at their southern destination, they will spend the winter resting for the return flight. Few of the original adults actually complete the trip home. Instead, the females mate and lay eggs along the way and their offspring finish this incredible journey.

Butterflies and caterpillars are preyed upon by birds, spiders, lizards and various other animals. Largely defenseless against many of these hungry predators, Lepidoptera have developed a number of passive ways to protect themselves. One way is by making themselves inconspicuous through the use of camouflage. Caterpillars may be protectively colored or have structures that allow them to seemingly disappear into the background.

For example, many caterpillars are green, making them difficult to detect because they blend in with the host leaf. Some larvae, particularly those in the Tropics, bear a resemblance to bird droppings, a disguise that makes them unappealing to would-be predators. The coloration and pattern of a butterfly's wings may enable it to blend into its surrounding. Some may look like dead leaves on a twig when they are at rest with their wings closed.

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The under wing markings of the comma and question mark butterflies help them to go unnoticed when hibernating in leaf litter. The heart, reproductive organs and much of the digestive system are located in an insect's abdomen. A butterfly or moth is the adult stage of a caterpillar. Butterfly antennae are used for balance and for detecting smells and wind speed. On the other hand, warm blooded animals are able to regulate their own internal body heat and their bodies stay at a fairly constant temperature, regardless of their surroundings.

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Also, dormant verb. The larva or caterpillar hatches from a butterfly egg.

Butterfly Life Cycle / Butterfly Metamorphosis

The mouthparts, eyes and antennae are located here. Butterflies that hibernate in the winter may do so at any stage of development, depending on the species. Most often, however, hibernation occurs during the pupal stage. Also, hibernate verb. The behavior is known without having been taught. Also, instinctively adverb. Caterpillars have mandibles, but adult butterflies do not. Butterflies undergo "complete metamorphosis" and their appearance changes completely from the larval to adult stage.

Insects which go through a "simple metamorphosis", such as a grasshopper, change only gradually in appearance during these stages. Some butterflies, such as the monarch, may migrate thousands of miles in order to avoid winter conditions. Other types of butterflies may only migrate a relatively short distance. Also, migrate verb. The insect grows a larger one to replace the one that is shed.

Butterflies give off pheromones in order to attract a mate. Generally more males that females puddle and it is believed that the salts and nutrients in the puddles are needed for successful mating. The scales give the butterfly wings their color and beauty. Butterflies have four stages: egg, larva, pupa and adult. Butterfly wings and legs are attached to the thorax.

The veins are tubes mostly filled with air. The university does not review, control or take responsibility for the contents of those sites. Send mail to cgcass0 uky. This site was last updated on June 25, An Equal Opportunity University. Site design : Academic Web Pages. All about butterflies.

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