NAU Biology BIO 326
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BIO326 : Population : Life Histories and Evolution : Life History Variation

Exercise: Life History Variation
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Life histories of different species reflect their adaptations to environment. From the True Geese of the World, make a table with the following information:

Common NameClutch SizeIncubation TimeAge at First
Reproduction
Barnacle  __________    __________    __________  
Brant Black  __________    __________    __________  
Brant Russian  __________    __________    __________  
Canada Aleutian  __________    __________    __________  
Canada Cackling  __________    __________    __________  
Canada Dusky  __________    __________    __________  
Canada Giant  __________    __________    __________  
Canada Interior  __________    __________    __________  
Canada Lesser  __________    __________    __________  
Canada Moffitt's  __________    __________    __________  
Canada Richardson's  __________    __________    __________  
Nene or Hawaiian  __________    __________    __________  
Red Breasted  __________    __________    __________  

1. Enter the data into the text box below.

2. Which species would you expect to have the greatest reproduction potential? Explain.

3. What additional information do you need to determine the population growth rate of these species? Explain.

4. David Lack hypothesized that clutch size increased from the tropics to higher latitudes. Are these data on geese consistent with this hypothesis? Explain.

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