BIO 182 Chapter Notes - Chapter 45.3-45.6: Magnetotaxis, Photoperiodism, Circadian Clock
Document Summary
Learning information processing that results in a change in behavior. Learning results in a stronger connection between neurons. Taxes movements in a certain direction: magnetotaxis moving in a certain direction with respect to a magnetic field, bacteria move towards magnetic north to go deeper. Homing find their way back home using environmental cues: birds use this for migration, map information where you are in respect with where you want to be, sun can be used as a compass. Many behavioral cues are dependent on time: circadian clock regulate daily rhythms. Can be reset by external inputs such as daylight. Photoperiod (day length) indicates time of year: lunar clock important for species that live where there is a tide, annual clock. No form of communication is advanced as that which humans use but many species use more primitive forms. Communication transfer of information from a sender to a receiver: sender creates a signal, responder receives signal and responds.
