Contextualizing the Microbiome of Contemporary and Historical Pisaster ochraceus in the Wild and in Aquariums
Ariel Cheng
Department of Biology
Faculty Supervisor: Peter Roopnarine
Pisaster ochraceus plays a critical role as a keystone species, regulating mussel and barnacle populations to preserve intertidal biodiversity. However, rising sea temperatures have heightened the threat of diseases, including the sea star wasting disease (SSWD), increasing the urgency to better understand and mitigate its impact. Addressing the gaps in our knowledge of SSWD is essential to developing conservation strategies. Limited knowledge of the microbial ecology of sea stars under varying conditions has hindered our understanding of species affected by SSWD and efforts to reintroduce functionally extinct sea stars, posing challenges for conservation initiatives. To address this issue, this study aims to describe and compare the microbiomes of Pisaster ochraceus sea stars in the wild and aquariums. Sea star samples were collected from the wild from different time points and different aquariums to facilitate a comparative analysis of microbial communities and to deepen our understanding of the ecology of SSWD. By examining tube feet from P. ochraceus, the study seeks to identify the microbial communities associated with sea stars. Additionally, identifying patterns in microbial communities in different conditions will shed light on the mechanisms of SSWD. These efforts are vital for preserving sea star populations, protecting ecosystems, and maintaining biodiversity.