Evolution and domestication Flashcards
scientific definition of domestication
-hard to define
-relationship with humans?
-process where animals adapt to living with humans and in the environment humans provide for them?
is domestication the same as taming
no
how old is domestication relative to life on planet
very short
first domesticated species
dog ~14000 years ago
beginning of domestication of farm animals
8000-12000 years ago
has the majority of genetic selection taken place before or after domestication
before
circumstances that led to domestication
-environmental changes
-ice age
-animals + people got together and lived in the same space
when control over animals by humans did start it was likely with the use of
-hobbles
-slaughter
-castration
-herding
-selecting for docility
what is evolution
selection of variants on trait animals already had
factors that were likely “selected for”
-ability to control animals
-herding ability
-temperament (casturation)
-aggression (slaughter)
in the last 100 years, how has there been a shift in how genetic selection takes place
-particular matings
-computers
-AI
in the last 100 years, how has there been a change in group size
-huge changes to animal social behaviuor
-livestock (going from 10 cows to feed lot)
-pets (typically we only have one dog or cat, before we had multiple + now we are treating dogs differently)
roles of behaviour in domestication
-relationship between human and animals is important for domestication
-animals that are more docile generally have a better relationship (docility most important behaviour factor in domestication)
favourable vs unfavourable traits for group structure
favorable:
-large social groups (flocks, herds)
-hierarchical group structure
-males and females living together
un favourable:
-family groupings
-territorial structure
-males living separate form females
favourable vs unfavourable traits for sexual behaviours
fav
-promiscuous mating
-males dominate females
-sexual signals given by movements of posture
unfav
-pair bond matings
-males must work to establish dominance over females
-sexual signals are given by colour markings or other morphological structures
favourable vs unfavourable traits for parent-young interactions
fav
-imprinting during critical period
-cross-fostering
-precocial young
unfav
-species bond established by species characteristics
-young accepted on basis of species charicteristics
-altricial young
favourable vs unfavourable traits for response to humans
fav
-short flight distance
-humans and environmental changes not upsetting
unfav
-long flight distance (wary)
-easily upset by humans or other changes to environment
favourable vs unfavourable traits for others
fav
-omnivorous
-adapted to environments
-limited agility
unfav
-specific dietary requirements
-specific habitat
-extreme agility