LIFESCI 1 Lecture Notes - Lecture 8: Mantis, Müllerian Mimicry, Heliconius
Reminder: Niche and Competition
• Niche Differentiation/Niche partitioning:
- Natural Selection →
Anti-predatory Defenses
• Spines
- The fish that live in bigger more open bodies of water have bigger spines and bones
rather than the ones that live in small bodies of water
• Startle Displays with chemical defenses
- Horn Lizard squirts blood from its eye that contains K9 repellent in it
• Eye Spots
- Eyespots and chicken response → chicks don’t respond the same way when eye spots
were painted over
- Praying mantis → Oracles Eye, on the wing of the praying mantis
- Some butterflies were genetically manipulated to have 7 eyespots, and they responded
to this butterfly more than the regular butterfly (more frightened)
• Aposematism: Warning Coloration
- Typically bright colors and in big groups
- Chemical defense often distasteful animals aggregate
- Bugs live in aggregates, of family members. If one gets eaten the other genes are still
around
• Mullerian Mimicry
- Heliconius Butterflies
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Reminder: niche and competition: niche differentiation/niche partitioning: The fish that live in bigger more open bodies of water have bigger spines and bones rather than the ones that live in small bodies of water: startle displays with chemical defenses. Horn lizard squirts blood from its eye that contains k9 repellent in it: eye spots. Eyespots and chicken response chicks don"t respond the same way when eye spots were painted over. Praying mantis oracles eye, on the wing of the praying mantis. Some butterflies were genetically manipulated to have 7 eyespots, and they responded to this butterfly more than the regular butterfly (more frightened: aposematism: warning coloration. Typically bright colors and in big groups. Bugs live in aggregates, of family members. If one gets eaten the other genes are still around: mullerian mimicry. Predators learn to avoid toxic butterflies which helps both of the similar looking species because the animal won"t eat them.
