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CSU - BC 103 - Class Notes - Week 19

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CSU - BC 103 - Class Notes - Week 19

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background image Behavior & Social Structures Tinbergen’s 4 questions —what stimulus elicits the behavior and what physiological mechanisms mediate  the response? (proximate) —how does the animal’s experience during growth and development influence  the response? (proximate) —how does the behavior aid survival and reproduction? (ultimate)
—what is the behavior’s evolutionary history? (ultimate)
what stimulus elicits the behavior and what physiological mechanisms mediate the 
fixed action patterns: innate behavior initiated by set stimulus and must run  to completion once started circadian/circannual rhythms: daily, seasonal, or yearly changes in behavior,  physiology, etc. (typically influenced by seasonal cycles) how does the animal’s experience during growth and development influence the 
—learned behaviors: behaviors modified by experience
imprinting: during sensitive periods animals are more sensitive to particular 
stimuli than other times in life —spatial learning and cognitive maps: remembering spatial structure of an  environment and objects in it associative learning: learning to make associations between experiences A. classical conditioning: learning to associate an arbitrary stimulus  with an outcome (ex. Pavlov’s dog) B. operant conditioning: learning to associate a behavior with a reward —cognition and problem solving: forming knowledge through awareness,  reasoning, recollection, and judgment —social learning: learning through observation of others how does the behavior aid survival and reproduction? —mating behavior and mate choice: mating systems influenced by patterns of  parental investment and certainty of paternity   A. monogamous mating
B. polygamous mating: polygyny (one male with many females) or 
polyandry (one female with many males) what is the behavior’s evolutionary history? altruism: behaviors that are selfless (do not benefit individual), can be  explained by inclusive fitness A. reciprocal altruism: selfless behaviors between non-related  individuals parasites and behavior —parasites can change behavior of hosts to benefit themselves
background image Conservation & Global Change 1.9 million described species, many millions undescribed  current extinction rates are 1000x higher than past extinction rates benefits of biodiversity —food
—economic services
—ecosystem services
• measuring species diversity richness: count and compare numbers of species
endemism: how unique a species is to a certain place
threats to biodiversity —overharvesting
—habitat destruction
—invasive species
A. feral hogs
B. Norway and black rats
C. domestic cats
D. brown tree snake
—climate change keystone species - species that has disproportionately large impact on its 
ecosystem compared to its abundance
umbrella species - species that, when protected in appropriate habitat, indirectly 
protect large numbers of other species (typically require large areas of high quality 
re-wilding —cores: well-protected areas
—carnivores: large predators to maintain diversity and ecosystem functions
—corridors: linking habitats of different levels of disturbance to create large scale 
corridors and support dispersal conservation successes —European large carnivores: brown bears, wolves, lynx, wolverine 
—North American grizzly bears and wolves 
—northern elephant seals
  —black footed ferrets

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School: Colorado State University
Department: Biology
Course: Biology of Organisms-Animals and Plants
Professor: Jennifer Dewey
Term: Fall 2016
Name: Life 103 Week 15
Description: These are the last 3 lectures before the final exam, covering modes of perception, behavior and social structures, and conservation and biodiversity.
Uploaded: 05/06/2016
3 Pages 13 Views 10 Unlocks
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