Davinack Research Group @ Wheaton College
CODEX: Program: Cryptic Organism Discovery and Exploration
CODEX centers on the discovery and molecular delineating of invertebrate biodiversity using DNA barcoding, metabarcoding and eDNA barcoding. CODEX seeks to build comprehensive species inventories to inform conservation efforts, especially in regions where taxonomic resolution remains poor. Our ongoing research has uncovered previously unrecognized parasite lineages, cryptic snail species and invasive taxa that were missed by traditional surveys. For example, recent study from my lab revealed that the trematode Proctoeces maculatus infects not only blue mussels (Mytilus edulis) but also ribbed mussels (Geukensia demissa) with genetic data suggesting a novel host shift. This finding has implications for marsh conservation, as ribbed mussels are key foundation species. This discovery was made by a team of brilliant undergraduate researchers who spent ~2 years working on the project.
TRACE Program: Translocation and Range Alteration in Coastal Ecosystems
The TRACE program in the Davinack Lab investigates the hidden impacts of human-mediated dispersal on parasite populations and host species in aquaculture and wild ecosystems. The goal is to disentagle natural versus anthropogenic connectivity using genetic and genomic tools. One current focus is on Polydora, a complex of polychaete species that bore into the shells of oysters and scallops in New England, and also threatens shellfish aquaculture in other regions of the world. Using traditional field methods, pathology assessment, larval ecology, and population genetics, we have mapped out seasonal reproductive dynamics of the worm and identified invasion corridors that inform biosecurity practices. Our work helps local fisheries and aquaculture operators adapt management strategies in response to shifting parasite pressure - applying conservation science in real world settings. Our research thus far has shown that Polydora infestations peak seasonally and are linked to estuarine conditions and anthropogenic structures. By collaborating with shellfish farmers, we have translated our findings into actionable mitigation strategies.
