NATS 4215 Lecture Notes - Lecture 10: Signalling Theory, Gazelle, Porichthys Notatus
26 Apr 2017
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Document Summary
Display construction in crustaceans: example: the semi terrestrial, burrowing crayfish belonging to the sp. Fallicambarus fodiens: found in wetlands and drainage ditches in easstern parts of north. Aesthetascs sensory structure found on the antennules of crayfish and in most other crustaceans: have olfactory roles and facilitate the detection of food and pheromones. Man and selection in relation to sex : book was published 12 years after on the origin of species in 1859. Handicap principal: proposed by israeli scientist amotz zahavir in 1975, reliable animal signals must impose a cost or handicap on the signaler, animal displays must be costly and only healthy individuals may be able to sustain such costs. If there"s groups of lions hunting collectively, stotting might not be as useful. Stotting is better applied when it is one predator and one prey lions for example chase in groups which means it"s more problematic.
