Gibson, Daniel Gilbert
Limulus polyphemus, better known as the horseshoe crab, is a marine animal that is useful in research. It inhabits the middle Atlantic Coast of North America. This project focuses on the diverse sex ratio of the horseshoe crab. One hypothesis is that the male molt is terminal. Several molts gathered from various beaches were measured and used to test this hypothesis. Biopsies of living horseshoe crabs were also examined. Many of the molts that appeared female actually displayed male characteristics as well as some that actually had male genital pores, supporting the hypothesis.
Worcester Polytechnic Institute
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Biology and Biotechnology