BIOSC 0370 Lecture Notes - Lecture 14: Crypsis, Batesian Mimicry, Monarch Butterfly
24 Apr 2018
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Predation and herbivory, both predators and herbivores can limit population growth, prey and predator populations demonstrate cyclic fluctuations, predation promotes adaptation, classic example: lynx & hare. Introduced spiders only survived on islands without lizards. Introduces species can cause extinction among local species, especially on islands. Large carnivores that consume both herbivores and mesopredators: humans have greatly impacted the abundances of top predators. Leading to a major increase in mesopredators: a herbivore"s specificity can make it efficient tool in controlling plant populations, prickly pear cactus from s. america to australia, cactus moth introduce, their larvae bores into the cactus. Look at how predators influence the activity of their pray: active tadpoles have increased predation risk. In the presence of predator, activity decreases for multiple species: morphological adaptation can lead to reduce predation risk. Seed mass was smaller: hormone added (didn"t smell)
