Presentation on theme: "Developmental Plasticity and Symbiosis Environment is not as bad as we thought Reaction Norm vs. Polyphenism Environmental regulation of phenotypes Learning."— Presentation transcript:
Developmental Plasticity and Symbiosis Environment is not as bad as we thought Reaction Norm vs. Polyphenism Environmental regulation of phenotypes Learning
Nature vs Nurture?
Plasticity Phenotypic Developmental
Dung Beetles and Ants: Diet-induced polyphenisms Queen Ant vs Worker Ant Horned male Dung Beetles: Protector of the Female.
Diet and Gene regulation DNA methylation viable-yellow of Agouti- transposon in cis-regulatory element.
Predator-induced Polyphenisms Kairomones
Predator-induced Polyphenisms: Amphibians More muscle mass in tail. Kairomones can make the tadpole more sensitive to environmental insults: fertilizers et al. Figure 17.6
Good Vibrations Fig Geronimo
Temperature and Sex
Temperature and Butterfly wings
Environment, Anxiety, and DNA methylation
Learning No division New Neurons Changing connections
Nervous system: Plasticity and Learning
Experience and vision Hubel and Wiesel (1960s) Right eye occluded for 3 months Occurs within 4 to 6 weeks of birth
Life cycle and Polyphenisms Diapause Larval Settlement
Symbiosis Parasitism Mutualism Commensalism
Developmental Symbiosis: passing on the help Vertical transmission Horizontal transmission Wolbachia infection
Shedding light on symbiosis Euprymna-Vibrio Light organ development and luminescence
Obligate mutualism Spotted Salamander and Oophilia amblystomatis Filariasis worm and Wolbachia