Animal Behaviour in Conservation Flashcards
why is behaviour important for conservation?
- behaviour mediates between organism + environment
- provides flexibility to the environment
- limits - can’t always adapt to extreme changes
How do traits evolve through natural selection?
- variation in traits
- differential reproduction
- heredity
- end results - if process continues all individuals in population will have the variation in traits
do behaviours evolve?
yes
what happens to animal populations when environment changes faster than animals can adapt?
decrease
what is Lifetime Reproductive Success (LRS)?
number of an individual’s offspring surviving to maturation
what traits increase LRS?
adaptations or adaptive traits
what is the concern if LRS is declining under current conditions?
population is of conservation concern
How to measure LRS?
- count all surviving offspring over lifespan
- copulation rate
- production of fertilised eggs/newborns
- independent offspring
- RS over one breeding season
- change of survival
- access to food
What are most behaviours related to?
- reproduction
- surviving
- foraging
- movement and space use
Reproduction
attracting a male, courtship, mating, parental care etc. Includes mating system and social organisation
Surviving
avoiding being eaten (vigilance, hiding, ‘flight’, defence etc)
Foraging
finding food (where to eat, how long to forage for, what prey to attack etc)
movement and space
migration, homing and navigation, communication (maintaining group cohesion)
what do behaviours change with?
physical / social environment
- e.g. pup care in banded mongooses
Example of individual consistency in many behaviour
e.g. some banded mongooses have ‘helpful’ personalities