DRAW IT You are considering two optimal foraging models forthe behavior of a mussel-feeding shorebird, the oystercatcher. Inmodel A, the energetic reward increases solely with mussel size.In model B, you take into consideration that larger mussels aremore difficult to open. Draw a graph of reward (energy benefiton a scale of 0–10) versus mussel length (scale of 0–70 mm) foreach model. Assume that mussels under 10 mm provide nobenefit and are ignored by the birds. Also assume that musselsstart becoming difficult to open when they reach 40 mm inlength and impossible to open when 70 mm long. Consideringthe graphs you have drawn, indicate what observations andmeasurements you would want to make in this shorebird’shabitat to help determine which model is more accurate.
DRAW IT You are considering two optimal foraging models for
the behavior of a mussel-feeding shorebird, the oystercatcher. In
model A, the energetic reward increases solely with mussel size.
In model B, you take into consideration that larger mussels are
more difficult to open. Draw a graph of reward (energy benefit
on a scale of 0–10) versus mussel length (scale of 0–70 mm) for
each model. Assume that mussels under 10 mm provide no
benefit and are ignored by the birds. Also assume that mussels
start becoming difficult to open when they reach 40 mm in
length and impossible to open when 70 mm long. Considering
the graphs you have drawn, indicate what observations and
measurements you would want to make in this shorebird’s
habitat to help determine which model is more accurate.
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