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Vanessa cardui

Vanessa cardui. Why do we study?. Shows a complete life cycle in 30 days Butterflies are an indicator species ( n) 1. A species whose presence, absence, or relative well-being in a given environment is indicative of the health of its ecosystem as a whole. Location of Vanessa cardui.

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Vanessa cardui

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  1. Vanessa cardui

  2. Why do we study? • Shows a complete life cycle in 30 days • Butterflies are an indicator species (n) • 1. A species whose presence, absence, or relative well-being in a given environment is indicative of the health of its ecosystem as a whole.

  3. Location of Vanessa cardui

  4. http://www.bing.com/videos/search?q=butterfly+life+cycle+video+painted+lady&qs=n&form=QBVR&pq=butterfly+life+cycle+video+painted+lady&sc=0-27&sp=-1&sk=&adlt=strict#view=detail&mid=AF7E38266DCA57136D35AF7E38266DCA57136D35http://www.bing.com/videos/search?q=butterfly+life+cycle+video+painted+lady&qs=n&form=QBVR&pq=butterfly+life+cycle+video+painted+lady&sc=0-27&sp=-1&sk=&adlt=strict#view=detail&mid=AF7E38266DCA57136D35AF7E38266DCA57136D35 • 3 min life cycle

  5. egg

  6. egg • female butterflies lay anywhere from a couple dozen to 1,500 or more eggs during their lifetime • Many lay eggs singly on a leaf of a host plant • Some lay eggs on the upper side, some on the underside • Eggs are glued to the surface of the plant with a secretion that hardens and protects them • most hatch with in 5-10 days

  7. hatching • It eats its eggshell • Then it feeds on the host plant • Outer skin (exoskeleton) cannot stretch with its continuing growth so it molts • Usually molt 5 times in their life

  8. larva • Uses strong jaws to munch through leaves • Stage lasts 5-10 days

  9. larvae • Molting – it makes a small pad of silk on which to grab with it’s prolegs • New layer of skin develops under the existing layer • When ready it swallows air to expand its body and splits open the old skin • It’ll resume eating when it’s new skin has hardened

  10. Getting ready to chrysalize • J shape • Final molt of a caterpillar it forms a chrysalis • It stops feeding and moves to an appropriate spot • Attaches itself with a pad of silk and holds to it with its prolegs • The silk thread comes out of a hole just below its mouth (spinneret) • The old skin splits open revealing the new skin of the chrysalis

  11. Chrysalis (pupa) • At the end of the chrysalis is the cremaster • It has hooks that the chrysalis uses to hold onto the silk pad • As the chrysalis wiggles the old skin usually drops off but sometimes it may get pushed up and remain • Some are suspended while some produce a silk girdle to hold it upright

  12. Chrysalis Pupa stage • While in this stage the caterpillar does not eat or excrete waste • Adults emerge with in 7-10 days • When complete the pupal skin splits open and the adult butterfly crawls out. • The wings are folded and wet • Red liquid is not blood its meconium (waste product)

  13. Adult • The adult remains suspended and begins to pump fluid into the veins of its wings to make them expand, then harden, and the adult is ready for flight.

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