BIO318Y5 Lecture Notes - Lecture 8: Natural Selection, Role Reversal, Foreign Body
Document Summary
Role reversal seahorses and singing worm crickets. Relative parental investment: sometimes the males need a timeout from mating depending on food supply. List of behaviour and life history traits: female biased longevity (independent of risks) Typical species of male immune species is lower than females: when varying food supplies, taking blood supply of the katydids and testing immunity, male don"t encapsulate a foreign body as well as the female. Man flu: mating effort in expense of mating system. Study: high quality male field crickets invest in sexual display but die young. Finding female egg: rare because male usually get eaten, somersault behaviour, in theory, live fast die young hypothesis, male will evolve self sacrifice in a species. Males that self sacrifice will get more time copulating and insert more sperm into the females. Organisms have ways to self repair while cars could not: somatic deterioration.
