Biology - Mimicry Storyboard
Storyboard Text
- Mimicry In Butterflies
- SBI3U0 - Biology U. Kelleymaharaj
- By: Zaara Kastura
- Caterpillar
- A butterfly starts off as a caterpillar during which it eats and eats. It also sheds and splits its skin at least 4-5 times within its caterpillar life. After its done eating it decides to sleep and form a cocoon with silk. The food eaten is stored for later use in adulthood.
- Cocoon
- The cocoon is a hard protective case made of silk encasing a caterpillar while its cells grow and transform into legs, wings, eyes and other parts of the adult body.
- Butterfly
- Once the caterpillar is done growing within the cocoon, it emerges into a butterfly. It breaks out of the cocoon with wings, compound eyes, longer legs, and longer antennas taking the form of an adult. The difference between a caterpillar and a butterfly (aside from the appearance) is that the butterfly can no longer grow.
- The caterpillar was responsible for eating and maintaining growth in order to proceed into adulthood, whereas now the butterfly is responsible for mating and laying eggs.
- Camouflage Genetic Variation
- These beautiful wings butterflies possess are crucial to communication with other animals. Sometimes it helps them camouflage, other times it helps ward off predators as some patterns are seen as toxic; the bright neon wings are like a sign displaying toxic. For example, if a bird is to prey on a toxic buttery that has bright neon wings it will remember this and therefore those butterflies won't be preyed on any longer.
- Now in terms of genetic variation, genetic variation and camouflage kind of go hand in hand as the various hues and patterns of a butterflies wings factor into their survival sometimes.
- In terms of camouflage, butterflies use this skill as a way to survive and avoid hunters. When they fold the outsides of their wings, they display the undersides of their wings as a result revealing the portion of their wings that are more neutral; successfully blending in with their surroundings. This skill is called crypsis.
- note** a male is not necessarily always non-poisonous and a female isn't necessarily always poisonous. What I wrote was to show the mimic of/through natural selection.
- Natural selection in butterflies is when one butterfly (that isn't toxic) takes the appearance of one that is toxic in order to survive and avoid predators.
- Non-poisonous
- Male
- Natural and Sexual Selection
- Sexual selection is of that in which a butterfly - typically a male - tends to mate with those only of the same pattern. Sexual selection is much more prominent in male butterflies as they tend to hold out against colour changes.In terms of butterflies, the female is the sperm holder so they can be fertile after mating once, whereas for a male butterfly, the rate of successful reproduction is corresponding to the amount of times he mates.
- Poisonous
- Female
- In Batesian mimicry, the non-poisonous butterfly takes the appearance of the poisonous butterfly which wards off predators. This is the butterfly mimicking its appearance as a way to make itself seem toxic and survive.
- As I mentioned earlier, Natural selection for butterflies, means to take the appearance of another butterfly in order to avoid predators. This is referred to as Batesian mimicry.
- For example: when a butterfly, which has bright, unique features and is toxic gets preyed on by a lizard, this lizard in the future along with other predator's will tend to avoid such butterflies with similar appearances as they now understand that they are toxic. So if a non-poisonous butterfly mimics the poisonous butterfly it tricks the predators into thinking they are harmful and as a result the butterfly would now have survived.
- Mimicry
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