Beetle Scientific Paper

Beetle Scientific Paper - Rasmussen 1 Drew Rasmussen Penny...

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Rasmussen 1 Drew Rasmussen Penny Louka Biology 191 Lab November 8, 2010 Flour Beetle Experiment Abstract Prompted by the theory of population and how space and food affect it a flour beetle experiment that had been carried out in the past was replicated in our lab. Introduction Methods and Procedures Testing for a hypothesis involving two variables requires multiple treatments to be set up to evaluate each variable individually. By using different volumes of a vermiculite and flour mixture we were able to achieve results that tested for both food and space as our variables. The procedures for setting this up are as follows. Five half pint wide mouth jars were used, and each one was labeled as Treatment A-E. Each jar then had a specific amount of flour added (and some of the jars had vermiculite added to increase living space for the beetles). Treatment A had 3 grams of flour added, B had 10 grams of flour added, and C had 50 grams of flour added. Jars D and E had both flour and vermiculite added (these will be the jars that test for space due to the increased living area created by the vermiculite). Jar D was filled with 10g of flour and enough vermiculite to bring it to the same volume as Jar C with 50g of flour. Jar E was prepared with 3
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Rasmussen 2 grams of flour and enough vermiculite to bring it to the same volume as Jar C. If vermiculite was added to the jar it was mixed in with the flour before adding the beetles. Once the jars had been prepared 10 beetles were counted out for each jar (a total of 50 flour beetles was needed). Beetles were carefully removed from the tray using brushes since they are small and rather delicate. Each jar was clearly marked, and then the lids were prepared. The lids consisted of two pieces of breathable mesh laid diagonally across one another with a
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This note was uploaded on 01/05/2012 for the course BIOL 191 taught by Professor Staff during the Fall '08 term at Boise State.

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Beetle Scientific Paper - Rasmussen 1 Drew Rasmussen Penny...

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