Unit 1 Making a Living in the Wild Chapter 7 Predators and Prey.
Unit 1 Making a Living in the Wild Chapter 9 Part 1 Communication.
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Transcript of Unit 1 Making a Living in the Wild Chapter 9 Part 1 Communication.
![Page 1: Unit 1 Making a Living in the Wild Chapter 9 Part 1 Communication.](https://reader036.fdocuments.net/reader036/viewer/2022081603/56649f285503460f94c40a7a/html5/thumbnails/1.jpg)
Unit 1 Making a Living in the Wild
Chapter 9 Part 1
Communication
![Page 2: Unit 1 Making a Living in the Wild Chapter 9 Part 1 Communication.](https://reader036.fdocuments.net/reader036/viewer/2022081603/56649f285503460f94c40a7a/html5/thumbnails/2.jpg)
Communication
• Sender sends signal to receiver
• Receiver responds in some way
• Leads to an advantage to sender
• Can also be advantage to receiver w/o intention
![Page 3: Unit 1 Making a Living in the Wild Chapter 9 Part 1 Communication.](https://reader036.fdocuments.net/reader036/viewer/2022081603/56649f285503460f94c40a7a/html5/thumbnails/3.jpg)
Channels of communication
• Sound• Visual• Touch• Smell• Electric fields• Substrate vibration
![Page 4: Unit 1 Making a Living in the Wild Chapter 9 Part 1 Communication.](https://reader036.fdocuments.net/reader036/viewer/2022081603/56649f285503460f94c40a7a/html5/thumbnails/4.jpg)
Sound
• Calls- short• Songs- long• Language- most
complex• Good: radiates in all
directions at once, can easily be turned on/off
• Bad: takes E, heard by pred
• Used to notify of proximate pred
![Page 5: Unit 1 Making a Living in the Wild Chapter 9 Part 1 Communication.](https://reader036.fdocuments.net/reader036/viewer/2022081603/56649f285503460f94c40a7a/html5/thumbnails/5.jpg)
Visual messages
• Good: easily identified, little error, quickly transmitted, directional, contains lots of info
• Bad: not over long distances, easily blocked, need light
• Light: can create light as a signal
• Some can change color quickly
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Touch messages
• Must be in close contact
• Communicates dominance or submission
• Giving of a food message
• Initiate transport message
![Page 7: Unit 1 Making a Living in the Wild Chapter 9 Part 1 Communication.](https://reader036.fdocuments.net/reader036/viewer/2022081603/56649f285503460f94c40a7a/html5/thumbnails/7.jpg)
Chemical message
• Chemical pathways- most universal form of communication
• Pheromones• Cheap to produce,
less risky to attract attention, last long time, good in day or night, not good after inclement weather
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Releasers vs. primers
• Chemical releasers affect behavior of another individual
• Primers directly affect other individual’s physiology
• Bruce effect-tendency for female rodents to terminate their pregnancies following exposure to the scent of an unfamiliar male
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Fxns of communication: 2 theories of why it evolved
• 1. Share info about what the animal will do next
• 2. To manipulate other’s behaviors b/c advantageous to themselves
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Comm is specific to a group
• Social releasers- elicit distinctive social behaviors of the same species
• Ritualization- signals become part of the social communication
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• Recognition fxns- be able to recognize their own species, group, family, mated pairs, offspring
• Primates have distinct facial characteristics
• Voices
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Group coordination
• Whales live in groups called pods
• Each group has own dialect
• Young learn by imitating adults
• Alarm- warns others of danger by sound or chemical
• Hunting- more efficient
• Foraging- can show location to others