In: Biology
1. Are there any general patterns to the distribution of the Ensatina salamanders? Describe the pattern that you see. Does the pattern make sense given the information on these salamanders in the background information? Expand on your previous answer.
2. How many distinct populations can you observe based on the location of the specimens (disregard the colors for the time being)? Which colored populations appear to be single population? Explain.
Stebbins decided that the Ensatina salamanders were not four separate species as previous biologist had determined but were instead a complex of the seven subspecies given below all of the species Ensatina eschscholtzii. Cut out each of the pictures of the representative Ensatina subspecies, arrange them on your map, and answer the following questions.
Identification Letter |
Stebbins subspecies |
Map Color |
a |
E.e. croceator |
brown |
b |
E.e. eschscholtzii |
red |
c |
E.e. klauberi |
blue |
d |
E.e. oregonensis |
purple |
e |
E.e. picta |
yellow |
f |
E.e. platensis |
green |
g |
E.e. xanthoptica |
orange |
3. Based on the appearance of the specimens, what general pattern emerges in the distribution of the Ensatina salamanders?
Speciation;
this species is characterized with brick red or light brown slender dorsal surface and limbs are lighter in colour.
this pattern helps them to hide in this area due to the camouflage
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