Lab 3 - Guppies.doc - Lab 3 Template Guppies Name...

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Lab 3 Template – Guppies Name: Greniqueca Mitchell Lab Section: W12 Exercise 1: Assessing Color Variation among Males in Guppy Populations [ 6.1 ] Now catch 15-20 male guppies and record their spot brightness on the table below. MALE # SPOT BRIGHTNESS MALE # SPOT BRIGHTNESS 1 14 1 15 2 17 2 15 3 17 3 16 4 16 4 18 5 16 5 14 6 15 6 16 7 16 7 17 8 15 8 18 9 14 9 18 10 16 10 16 [ 6.2 ] In the space below, record any other observations you think might be important, such as what other species you find living in the pool along with the guppies and/or what sort of substrate you see (sandy, muddy, or vegetative): The guppies that lack spots are the females, the tank also contains the Rivulus hartii fish. The food in the tank that the guppies eat are called Tropical. The environment the fishes live in is sandy. [ 6.3 ] On the grid below, plot a histogram showing the variation in spot brightness among the male guppies in Upper West Stream: [ 8.1 ] How does your assistant’s graph (which includes all the males in the pool) compare to yours from page 3 (which includes a smaller sample of males from the pool)?
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The assistants graph looks similar to the graph I created, in that it is distributed to the right side of the graph. However, the spot brightness ranges from 10 – 18, compared to the graph I created which ranged from 14 – 18. [ 8.2 ] Visit LOWER WEST STREAM, UPPER EAST STREAM, and LOWER EAST STREAM by clicking on each pool on the Map. For each stream, COPY or PRINT your assistant’s histogram. Write the stream name and take notes on features of the stream and the other species that live there. Finally, visit MEIR CREEK to see what lives there. Lower West Stream The environment is vegetated It contains tall sea weeds The predators present are Rivulus hartii and Blue Acara Contains both male and female guppies Upper East Stream The environment is sandy Contains male and female guppies No predators present Lower East Stream The environment is muddy Contains male and female guppies Contains the predator Crenicichla punctata Meir Creek
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  • Winter '14
  • GaryBurness
  • Evolution, Sexual Selection, John Endler, Meir creek, spot brightness

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