Behavioural Ecology And Conservation Flashcards
What is Trivers-Willard’s hypothesis on sex ratio adjustment?
High quality males (produced from high quality mothers) are assumed to get the lion’s share of matings from male-male competition
What was to blame for the skewed translocated kakapo population?
Abundant year round supplemental skewing
What was done to adjust the skewed kakapo population?
It was decided to feed the females only after they lay eggs so it can be altered to produce more females
What was found in the Trinidadian guppy when a predator was introduced to one population and not the other?
The group without predators increased in dimorphism because it was advantageous to the males for mating
The group with predators introduced decreased in dimorphism because the predator spots the brightly coloured males
Why might sexual selection protect against extinction in small inbreeding populations?
In a sexual selection group females are able to choose the healthiest male so they won’t die out as quickly
Why does infanticide occur in lions?
Killing cubs usually brings females rapidly into oestrus and removal of older cubs also removes potential competitors
