BIOL 312 Lecture Notes - Lecture 39: Nectar Robbing, Parasitoid, Wolbachia
14 Dec 2017
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Document Summary
Pollination: transfer of the male gametes (pollen) from one flower to the female receptacle of the same or different flower. Plant adaptations for pollination: attractive, manipulation of rewards to promote x- pollination. M + f flowers separated in space and time. E. g. orchids mimic smell of cabbage that caterpillars feed on wasps come looking for caterpillars and end up pollinating flower. Cheating by plant: pseudocopulation orchids look/smell like f wasp. M wasp try to mate and end up pollinating it. Pollinator specificity: benefits: consistent pollination, increases potential to exclude less efficient pollinators/ cheaters, increases ability to control outcrossing. Pollination syndromes: flower traits that have evolved in response to natural selection imposed by abiotic and biotic pollen vectors. Parasitoid: develop in/on 1 host and kill it. Parasite: develop in/on 1 host and don"t kill it (unless accidentally by infection). Host location by parasitoids: ovipositing female, active 1st instar larvae, eggs laid on foliage and only hatch when ingested by host.
