learning, imprinting, and kin recognition Flashcards
what is the pathway of olfactory learning in bees
- sensory = 2.5s
-neurons in antennae - short-term = 1.3 min
-antennal lobes - consolidation = 3-7 min
-calyces - long-term = days/weeks
-alpha and beta lobes
how can we study memory formation
-cold shock blocks modification of existing proteins and protein synthesis
-cyclohexamide blocks protein synthesis
what are the 3 components of drosophila memory
-short term (transient, lasts a few hours)
-arm (lasts 4 days)
-ltm (lasts >7 days)
why is arm and ltm important
-both must work together to produce long lasting memory cAMP signaling pathway
-mushroom bodies are critical (mutants with impaired ones cannot learn)
what is the difference between short term and long term formation
LTM involves transcription and translation
what is imprinting
a rapid and persistent form of learning, usually in young animals
what are the 4 conditions of imprinting
- critical period: species-specific timing
- irreversible
- sensitive period: precedes performance
- supra-individual: animals prefer to mate with individuals that resemble their parents, not with their parents
is imprinting an open or closed system
example of highly limited open program
what is filial imprinting
imprinting on parents
why is the thyroid hormone important for filial imprinting
determines start of sensitive period of filial imprinting in chicks
what is sexual imprinting
learning sexual preferences for sex partners early in life
what are examples of sexual imprinting
Klaus Immelmann: zebra finch/bengalese finch cross-fostered offspring preferred foster parent species must see and touch to be imprinted
why isn’t sexual imprinting generally problematic
- close physical contact
- fed by adult
how does a species raised by foster parents know who to mate with
- self-referential phenotype matching = mate with someone who looks like me
- chattering = password
how do mice recognize their kin
can detect a single MHC gene difference (involve in immunity)
