Todd Dubreuil

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Todd Dubreuil

Curriculum vitae (pdf)


Contact Info:
US Geological Survey
Conte Anadromous Fish Research Center
One Migratory Way
PO Box 796
Turners Falls, MA 01376

office phone: (413) 863-3869
cell phone: (413) 772-9873
fax: (413) 863-9810


Title: Fish Ecologist


1998 - B.S. University of Massachusetts at Amherst, Biology


Research Interests:
I am interested in how habitat fragmentation impacts the growth, survival, and movement of stream fishes and how the implementation of PIT Tag technology can help address this question. In July of 1999 I had the opportunity to become involved with the research and development of FDX PIT tag antenna arrays. We were able to develop a working swim thru model to be used at our long term West Brook Study Site. Salmonids (Atlantic salmon, brook and brown trout) in the West Brook have been individually tagged with 12mm FDX PIT tags from 1997 thru to the present. The application of PIT technology has allowed us to study habitat use and fragmentation in much greater detail. At This time we have 7 systems on the West Brook logging movement data continuously. I am also excited in improving our existing antennas as well as developing new custom designs. Designs we are currently working on are, portable wand, flat plates and high conductivity systems.



Rudershausen, P.J., J.A. Buckel, T. Dubreuil, M.J. O'Donnell, J.E. Hightower, S.J. Poland, and B.H. Letcher. 2014. Estimating movement and survival rates of a small saltwater fish using autonomous antenna receiver arrays and passive integrated transponder tags. Marine Ecology Progress Sereis 499:177-192. doi:10.3354/meps10656

Horton, G.E., T.L. Dubreuil, and B.H. Letcher. 2007. A model for estimating passive integrated transponder (PIT) tag antenna efficiencies for interval-specific emigration rates. Transactions of the American Fisheries Society 136:1165-1176.

Letcher B.H., K.H. Nislow, J.A. Coombs, M.J. O’Donnell, T.L. Dubreuil. 2007. Population response to habitat fragmentation in a stream-dwelling brook trout population. PLoS ONE 2(11):e1139. doi:10.1371/journal.pone.0001139.

Zydlewski, G.B., G. Horton, T. Dubreuil, B. Letcher, S. Casey, and J. Zydlewski. 2006. Remote monitoring of fish in small streams: a unified approach using PIT tags. Fisheries 31(10):492-502.

Letcher, B.H., G.E. Horton, T.L. Dubreuil, and M.J. O'Donnell. 2005. A field test of the extent of bias in selection estimates after accounting for emigration. Evolutionary Ecology Research 7(4):643-650.

Sigourney, D.B., G.E. Horton, T.L. Dubreuil, A.M. Varaday, and B.H. Letcher. 2005. Electroshocking and PIT tagging of juvenile Atlantic salmon: Are there interactive effects on growth and survival? North American Journal of Fisheries Management 25(3):1016-1021.

Letcher, B.H., T. Dubreuil, M.J. O'Donnell, M. Obedzinski, K. Griswold, and K.H. Nislow. 2004. Long-term consequences of variation in timing and manner of fry introduction on juvenile Atlantic salmon (Salmo salar) growth, survival, and life-history expression. Canadian Journal of Fisheries and Aquatic Sciences 61(12):2288-2301.

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