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12. Ways Communicate

12. Ways Communicate - Communication Behavioral Ecology...

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1 Communication Hanayo Arimoto Behavioral Ecology Hello? Communication: 1. An actor (or producer) creates the signal. 2. A reactor (or receiver) receives the signal. 3. This signal influences the behavior of the reactor. Chemical Olfactory (smell) Gustatory (taste) Mechanical Tactile (touch): physical contact/substrate vibrations Auditory (sound): airborne vibrations Visual Sight: Role of color in mate recognition/Light production and communication
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2 Type of Signal Feature Chemical Auditory Tactile Visual Range Long Long Short Medium Rate of Change Slow Fast Fast Fast Ability to pass obstacles Good Good Poor Poor Ex: Communication in Ants (a) tactile signal : recruit a single worker to help retrieve small amount of food (dead beetle) (b) chemical signals : recruit many workers to large patches of food (leaves, seeds) alarm pheromone… (b) odor trail Methods differ depending on circumstances (a) tactile signal Intraspecific communication (same species) Interspecific communication (different species) Any given communication method can do both
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3 Olfactory Gustatory A: By changes in the following: structure: form of molecules mixture: combination of molecules ratio: quantities of various molecules amount: quantity of mixture released Release molecules using special glands, usually in abdomen Q: How do insects form unique odors? Chemical receptors: sensilla w/ pores to detect & trap airborne molecules (e.g., pheromones) bugscope . beckman . uiuc . edu www.lib.mcg.edu
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4 Intraspecific communication (same species) Example: Pheromones : Intraspecific chemical signal mate location & courtship Although they are very sensitive to chemicals, insects respond to a narrow range of scents that are relevant to their species & behavior.
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