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The logistic (Verhulst) growth model and its various current modifications are all based on the notion that the isothermal momentary growth rate is proportional to the momentary population’s size and the fraction of resources that are still available in the habitat. The model as originally formulated is inappropriate for growth curves that exhibit a long lag time when plotted on semi logarithmic coordinates...
Postnatal changes in wing morphology, flight development and aerodynamics were studied in captive free-flying short-nosed fruit bats, Cynopterus sphinx. Pups were reluctant to move until 25 days of age and started fluttering at the mean age of 40 days. The wingspan and wing area increased linearly until 45 days of age by which time the young bats exhibited clumsy flight with gentle turns. At birth,...
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