Shells

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<strong>Shells</strong> can be described geometrically r(t,ω) = r 0 (t)e − k r ω ' θ(t,ω) = ω + θ 0 (t) z(t,ω) = z 0 (t)e − k z ω 14 14
The model can ‘grow’ shells dynamically Existing structural features N eurosensory stim ulation R esulting neurosecretory activity C orres ponding aperture growth 15 15
Page 1 and 2: The neural origins of sea shell pat
Page 3 and 4: Shapes ANGULATE WENTELTRAP PINK MOU
Page 5 and 6: What purpose is the pigment Most sp
Page 7 and 8: Model for neurosecretion of shell a
Page 9 and 10: Reduction to simpler models Discret
Page 11 and 12: Experimental foundations Richly inn
Page 13: Shell anatomy Inner Outer Epitheli
Page 17 and 18: All shell patterns are generated fr
Page 19 and 20: Turing instablity → Stripes Pigme
Page 21 and 22: Excitable → Waves C. vicweei C. c
Page 23 and 24: Triangle patterns arise from wave c
Page 25 and 26: The role of shell geometry 24 24
Page 27 and 28: Bifurcations separate different pat
Page 29 and 30: Cowries require a 2-D model 28 28
Page 31 and 32: What’s next: the amazing cuttlefi

Shells

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