BIO318Y5 Lecture Notes - Lecture 13: Predator Satiation, The Major Transitions In Evolution, Selfishness
Document Summary
Murmuration phenomena: a collection of starlings in action is called murmuration. Update on cuckoo mimicry: pattern on the eggs, local adaptation to the chest feather, cuckoos impersonate hawks by matching their outfits. Batesian mimicry: harmless species that mimics other stinging insects, has furry yellow and black abdomen. Last lecture : episodes of sexual selection after copulation. The concept of fitness: direct competition between ejaculates of different males, cryptic female choice (potential for females to control the relative reproductive success of her mates: from manipulation of ejaculates/fertilization through to. Differential allocation of resources to zygotes and offspring: some post copulatory sexual conflict likely (e. g. male chemical influences on remating/oviposition) Spiking the sperm so that it affects female mating (ex. Make the female lay more eggs or make her reject other males) Comb jelly: marine animal, more than one sperm enters the membrane, female pronucleus moving towards one male and then heading back to another male, cryptic female choice right at fertilization.
