Sunday, 22 May 2005

This presentation is part of: Pre-College Reseach Posters

Gender Aggression in Crayfish

Kerima Burdette, The Young Women's Leadership, New York N.Y, NY

Our team is researching gender aggression in crayfish using Procambarus sp. We will test hypotheses: 1) a higher level of aggression is demonstrated by male crayfish than by female crayfish. 2) Habitat structure plays a role in crayfish aggression in both genders. Our experimental design will include a 40 gallon control tank with a structurally complex habitat that will allow adequate space and cover for all of our subjects. We will then set up experimental tanks, one for males and one for females. The tanks will be identical in structure. We will be observing the levels of aggression in each tank to determine whether gender is a factor in crayfish aggression. We will observe behavioral patterns in crayfish at 20 minute intervals. We will then test for aggression between genders. Using a tank with the identical habitat structure that we used in the first test we will introduce male and female subjects and observe the level of aggression compared with aggression noted between same gender subjects. Finally, we will test the effect of habitat structure on crayfish aggression. We propose to compare the effects of a densely vegetated habitat with a simple habitat. In order to accurately isolate the effect of habitat structure we will set up six experimental tanks. Three tanks will have complex vegetated structure; three tanks will have sand substrate only. Once we conduct multiple tests and analyze our data using a two way ANOVA we will propose some possible factors that contribute to aggression in crayfish.

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