Date of Award

Fall 12-15-2021

Document Type

Open Access Thesis

Degree Name

Master of Biological Science (MBioSci)



First Advisor

Karen Wilson

Second Advisor

Christine Maher

Third Advisor

Theresa Theodose


River herring is a term applied collectively to both alewife, Alosa pseudoharengus, and blueback herring, A. aestivalis, anadromous fish that spend most of their life in the ocean and migrate upriver to freshwater to spawn each spring (NEFSC 2006). Juveniles spend their first summer in freshwater and are thought to migrate to the ocean in fall, where they remain until they are sexually mature and ready to spawn (three to five years; ASMFC 2012).