Transparency Form of crypsis Involves modification of whole organism
Lupine Seed Crypsis
description
Transcript of Lupine Seed Crypsis
Lupine Seed Crypsis
Melissa VielmaAllison Bogisich
Susan LeJesus Gallegos
What is Crypsis?The ability of an organism to avoid detection
or observation by another organism or predator
Gives helpless, defenseless organisms protection
Ex: Hermit CrabsWalking SticksChameleons
Lupine Seed Variation Different colored seeds
Light-white Dark almost black
Different sizes Large Small
Making the Bread seeds To make the small bread seeds we used ¼ of a
slice of bread and dipped them into water. We rolled the bread into balls.
To make large bread seeds we used ½ of a slice of bread and repeated the process of dipping them into water and rolling them into balls.
To color the bread seeds black we mixed water with black food coloring. Then we dipped them in the mixture and spread it throughout the seed until it was completely covered.
Procedure We drove to Strawberry creek
and scattered the bread seeds where we thought rodents would not be able to find them, memorizing where we hid each of our seeds. We waited 20 minutes before coming back to the creek and collected the bread seeds that were still hidden.
Recording DataRESULTS: LARGE BLACK SEEDS- 10 found out of 10 =100% SMALL BLACK SEEDS- 8 found out of 10 =80% LARGE WHITE SEEDS- 10 found out of 10 =100% SMALL WHITE SEEDS- 5 found out of 10 =50%
LARGE SMALL
WHITE 10 5BLACK 10 8
Conclusion
large black seeds
small black seeds
large white seeds
small white seeds
02468
1012
large black seedssmall black seedslarge white seedssmall white seeds
We can conclude from this information that small white seeds were the easiest to find and large seeds were the hardest to find.
Amount of seeds not Found
Results: Average Weight of Seeds
Ave. weight of dark seeds found
Ave weight of Dark Seeds Not Found
Ave. Weight of Ligh Seeds Found
Ave Weight of Light Seeds not found
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Trials 1 to 3Trials 4 to 6Trials 7 to 9
Grm
as
Results: Percent of Seeds Found
Trials 1 to 3 Trials 4 to 6 Trials 7 to 90.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
% Light Seeds Found% Dark Seeds found
Results: Weight/Seed
Trials 1-3 Trials 4-6 Trials 7-90
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16 Figure 3
Total Weight/Seeds of All Seeds Found Total Weight/Seed of ALL Seeds NOT Found
Trials for Lupine Seed Experiment
Wei
ght
of S
eeds
in G
ram
s
Our Hypothesis That lighter, smaller seeds
would be the best qualities for lupine seeds to have in order to aid them in crypsis.
How will this affect lupines in the future, or the future of the rodents that eat the seeds?
The majority of lupines will develop smaller, lighter seeds because they blend in well with the sand. However, since sand is multi-colored, darker seeds will still occur, but will not be a dominant color.
For rodents, this means that they must develop keener senses to help them find the seeds.