M. E. Hahn

Environmental and Population influences on Mummichog (Fundulus heteroclitus) Gut Microbiomes

This study examines how environmental exposure and population differences affect the gut microbiomes of mummichog fish, finding that habitat conditions have a stronger influence than genetic factors.

Independently evolved pollution resistance in four killifish populations is largely explained by few variants of large effect

This study identifies few large-effect genetic variants explaining pollution resistance in killifish populations exposed to PCB-126.

Developmental exposure to domoic acid targets reticulospinal neurons and leads to aberrant myelination in the spinal cord

This study shows that developmental exposure to domoic acid targets reticulospinal neurons, leading to axonal loss and aberrant myelination in zebrafish spinal cords.

Developmental exposure to domoic acid disrupts startle response behavior and circuitry

This study shows that developmental exposure to domoic acid disrupts startle response behavior and specific neural circuitry in zebrafish.

Domoic acid disruption of neurodevelopment and behaviorinvolves altered myelination in the spinal cord

This study shows that exposure to domoic acid at 2 days post-fertilization in zebrafish disrupts myelination and causes behavioral deficits, identifying a critical developmental window for toxicity.

An Aryl Hydrocarbon Receptor from the Caecilian Gymnopis multiplicata Suggests Low Dioxin Affinity in the Ancestor of All Three Amphibian Orders

This paper identifies a low dioxin-affinity aryl hydrocarbon receptor in the caecilian Gymnopis multiplicata, suggesting this trait evolved in the common ancestor of all amphibians.