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authorHolden Rohrer <hr@hrhr.dev>2021-01-03 17:20:24 -0500
committerHolden Rohrer <hr@hrhr.dev>2021-01-03 17:20:24 -0500
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+The materials were first purchased.
+24 16oz deli containers were filled with 2.5 inches of play sand and one
+antlion was placed in each container.
+Every week, each plastic container (i.e. each antlion pit) was given a
+small cricket
+The crickets were purchased from a pet supply store.
+
+The remaining sand (100lbs) was spread into a $24"\times24"$ plastic
+container at a depth of at least 2 inches.
+A meter stick and a pen was used to make one-inch separated marks on the
+vertical and horizontal axes of the box so the antlions' pits' locations
+could be observed.
+
+Using the grid, each trial was started by distributing a group of
+antlions in an array shape (the dimensions and populations of which are
+in a table below), and equally spaced between eachother and the walls,
+all inserted around the same time.
+%%% Need to make that table
+Antlions were transferred between the small containers and the
+experimental environment by scooping them with a plastic spoon and
+sifting the sand from the antlion with a sieve.
+After the first and second days of each two-day trial, the coordinate
+locations, diameters, and depths of each antlion pit were recorded for
+later analysis.
+After each trial, all living antlions were restored to their pits and
+dead antlions disposed of.
+
+Further trials repeated these same protocols except with modified space
+restrictions and several methods to disrupt potential communication
+pathways.
+Each disruption method was trialled with each space restriction, each
+trial run over a two day period.
+There are three different space restrictions and three different
+disruption methods.
+The space restrictions are $24"\times24"$ (the initial box size),
+$16"\times16"$, and $12"\times12"$ (constructed in the original
+container by cardboard and duct tape barriers).
+The three disruption methods are ``trail erasure,'' ``fake pits,'' and
+``artificial obstacles,'' making for nine trials in total.
+
+``Trail erasure'' will be, once a day, brushing away old trails in the
+sand which antlions have dug out, in an effort to determine if the
+reduction of this possible communication pathway will destabilize or
+change the pit distribution.
+``Fake pits'' will be sand scooped out in an inverse cone to mimic an
+antlion pit, with two or three placed uniformly randomly once a day,
+except when it would sit on top of an existing pit.
+This will show if the antlions are intelligently avoiding pits or if
+cannibalism creates the patterns that are observed in their
+distribution.
+``Artificial obstacles'' are small stones or hard plastic barriers with
+a minimum height of .5in above the sand to determine if antlions are
+aware of the shape of their settlement region and use that to organize
+the group.