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Life Tables. Ricklefs & Miller (1999) Ecology Age Structure Stable Age Distribution Life Table: Environmental Dependence. Stable Age Distribution. Vital Rates & Environment. Experimental Population Dynamics.
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Life Tables Ricklefs & Miller (1999) Ecology Age Structure Stable Age Distribution Life Table: Environmental Dependence
Experimental Population Dynamics Costantino et al. 1995. Experimentally induced transitions in the dynamic behaviour of insect populations. Nature 375:227. Flour beetle Tribolium castaneum Manipulate Adult Mortality: Bifurcation
Flour beetles Grown in ½ pint milk bottles Change media (food) every 2 weeks Census all stages Add or remove adults: mortality rate
Flour beetles Multiple stages: egg, larvae, pupae, callow adults, mature adults Consume media & cannibalism Larvae & adults eat eggs Adults eat pupae
Dynamics (Skeleton) Lt Feeding Larvae, time t Pt Pupae, time t At Mature Adults, time t (t + 1): 2 weeks later
Dynamics b larvae per adult before cannibalism cij cannibalism of stage j on stage I j mortality of stage j
Experimental Population Dynamics Costantino et al. 1995. Experimentally induced transitions in the dynamic behaviour of insect populations. Nature 375:227. Dynamics Bifurcate as Model Predicts