110 likes | 210 Vues
Learn the types of symbiosis in predation - predator-prey relationships, defense adaptations, and species interactions in nature. Explore predator behaviors, prey defenses, mimicry, and more. Discover plant prey adaptations through physical and chemical defenses, and understand interspecific and intraspecific competition. Dive into concepts like mutualism, commensalism, and species richness. Complete your homework on species interactions and the science behind resource/niche partitioning and competitive exclusion.
E N D
Warm up 3-31: • Using: + = good & - = bad explain which types of symbiosis correspond to: • (+/+) (+/-) (+/0) Notes #18: SPECIES INTERACTIONS Part 2 PP 403-404
PREDATION (+/-) • one species eats another species • predator: eater and prey: eaten • Types: carnivores, herbivores
PREY: SEA URCHINS • cyclic in nature – ↑ in prey leads to ↑ in predators (vice versa) • Adaptations in prey for defense against predators PREDATOR: SEA STARS
RESPONSES TO PREDATION • camouflage: Cryptic coloration disguises an animal so it’s less visible to predators or prey
warning coloration: intended not to camouflage an organism but to make it more noticeable - Bright coloring, scent, or taste to warn potential aggressors
mimicry: physical (or behavioral resemblance) of one species to another 1. natural selection of a second moth species favors moths who look like the bad tasting species (bright colors) 2. color patterns may be similar
moment of truth defenses: action by prey just before death that is unexpected by predator
alluring coloration: animals are colored so a predator's attention is drawn to a non-vital part of the prey's body
Species Interactions • Plant Prey Adaptations -adaptations work towards protecting the plant from being eaten Ex/ Physical Defenses – thorns, spines, sticky hairs and tough leaves Chemical Defense – poisonous, irritating or bad tasting Secondary Compounds – chemicals that are a byproduct of the plants metabolism Ex/ Strychnine, Capsacian & Nicotine
Homework • Turn in Notebook (1 pile) • Turn in Warm-ups (2nd Pile) 3/5/14 - 3/31/14 • Response to Predation • Trifold Vocab: • Interspecific Competition • Intraspecific Competition • Mutualism • Commensalism • Symbiosis • Species Richness • Species Evenness • Primary Species • Pioneer Species
Warm-up 4/1 What is resource/niche partitioning? What is competitive exclusion?