Ecological Behaviors Chapter 31.2 Describe competitive behaviors and give examples.
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Transcript of Ecological Behaviors Chapter 31.2 Describe competitive behaviors and give examples.
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Ecological BehaviorsChapter 31.2
1. Describe competitive behaviors and give examples.
2. Describe types of communication, nurturing and cooperative behaviors.
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Animals that engage in complex behaviors might survive and reproduce because they have inherited more favorable characteristics…
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Competitive Behavior¨ competition for food, space, mates and other
resources between individuals within a population
¨ animals that have successful competitive behaviors are more likely to have resources needed for survival and reproduction
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agonistic behavior: threatening or combative interaction between two individuals of the same species¨ usually does not result in injury or death – one will submit
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dominance hierarchies: a top-ranked animal gets access to resources without conflict from other animals in the group – helps reduce hostile behavior between members
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territorial behaviors: attempts to adopt and control a physical area against the other animals of the same species¨ include verbal signals (chattering of squirrels) and chemical signals (urine)
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Foraging Behaviors¨ finding and eating food
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Migratory Behavior ¨ moving long distances seasonally to new locations increasing the chance of survival
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Biological Rhythms¨ repeated behavior in a rhythmic cycle ¨ influenced by environmental factors (temp, day
light, availability of food)
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Communication Behaviors1. pheromones (specific chemicals)2. auditory communicationlanguage: form of auditory communication in which animals use vocal organs to produce groups of sounds with shared meanings
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Courting Behavior¨ an attempt to attract a mate – males with the desired trait have a competitive advantage at producing offspring
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Nurturing Behaviors¨ parents providing care to their offspring in the early stages life – providing food, protection, and skills needed for survival
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Cooperative Behaviors¨ exist in groups of the same species of animal –
cooperative behaviors benefit the whole group
altruistic behavior: an animal that performs an action that benefits another individual at a cost to itself