AUTHORS: Israt Jahan, Samodha Fernando, Chris Chizinski, Mark Pegg
ABSTRACT: The gut microbiome plays a vital role in the health and survival of aquatic species, including the endangered Pallid Sturgeon (Scaphirhynchus albus), which is experiencing reproductive challenges due to habitat alterations. While hatchery augmentation remains a key strategy to bolster Pallid Sturgeon populations, the reduced survival rates of hatchery-raised individuals present a significant obstacle to delisting efforts. This study investigates the gut microbiomes of wild-caught Pallid Sturgeon from Platte River and hatchery-raised Pallid Sturgeon from Gavin's Point National Fish Hatchery to identify differences and their potential management implications. Fecal samples were collected from both groups, and the 16S rRNA gene was amplified to sequence and characterize the microbial communities present. Findings indicate that wild-caught sturgeon exhibit a more diverse and adapted gut microbiome than their hatchery-raised counterparts. These differences may challenge hatchery-raised individuals in adapting to natural environments post-release, potentially affecting their survival and reproductive success. Furthermore, alterations in gut microbiota composition may influence nutrient absorption, immune function, and overall health. Integrating gut microbiome dynamics into management strategies is essential for conserving endangered species, underscoring the necessity for adaptive management approaches incorporating microbial ecology principles to ensure the long-term survival of Pallid Sturgeon populations.
