Meeting Abstract

P1-145   -   Structure of the pyloric cecum in Atlantic sturgeon (Acipenser oxyrinchus) Gilbert, JN*; Robertson, JC; Westminster College, PA; Westminster College, PA gilbjn22@westminster.edu

This study describes structural features of the pyloric cecum in Atlantic sturgeon (Acipenser oxyrinchus). In various fish species, the pyloric cecum is a prominent digestive organ thought to have absorptive and, possibly, secretory functions. Using freshly excised tissues from juvenile fish, we determined morphometric indices that relate pyloric cecum dimensions to other digestive tract components and whole body measures. In addition, we use histology with differential staining to characterize pyloric cecum cell and tissue features. Characterizing the structure of the pyloric cecum in Atlantic sturgeon may afford insight into digestive adaptations associated with the way of life and diet of this acipenseriform species. As Atlantic sturgeon continue to face population decline and the threat of extinction, contributions to the understanding of digestive structure and function may be useful in efforts to conserve this species.