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Fig. 6. Simulated behavior of male N. succinea in response to various
concentrations of CSSG. The direction and starting point of the worm in the
simulation is shown by the yellow arrow in each illustration; the trajectory
of the worm is indicated by the narrow black line; the simulated final
position of the worm when the simulation was terminated is shown by the short
black line; and the dispersion of pheromone by the simulated swimming of the
worm through it is shown by the spread of the blue color of the initial line
of pheromone (initially approximately 7 mm wide). Concentrations of pheromone
in the simulated `trail' initially were (A) 0 (control, no pheromone),
(B–D) log[CSSG]=–8.5 (i.e. 3.16x10–9 mol
l–1), (E) log[CSSG]=–8.0 (i.e. 10–8
mol l–1), and (F) log[CSSG]=–8.5 (i.e.
3.16x10–8 mol l–1). The 10 cm
calibration applies to all parts.
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