David L. Berlinsky, Ph.D.

David L. Berlinsky, Ph.D.

Professor

My research primarily focuses on improving the culture of commercially important finfish species by understanding and ultimately controlling physiological processes. Much of my research has focused on understanding reproductive processes, as this is requisite for successful propagation of aquatic species and often limits production. Fishes exhibit an astonishing array of reproductive strategies and each species' unique strategy must be unraveled before successful culture can be realized. Some of the specific topics which are of interest to me include the endocrine control of sex differentiation, factors that influence egg development and quality, effects of social interaction and environmental conditions on sex change (sequential hermaphroditism), role of pheromones in reproductive success and environmental control of reproductive cycles. Study of the life cycles of wild fish is often necessary to understand these processes. My students and I are also studying environmental conditions that minimize stress and optimize growth of cultured fish, such as salinity levels, light intensity, tank densities and temperature. We utilize applied aspects of aquaculture, such as hormonal induction of spawning, as well as modern laboratory techniques to address these questions.

Some of the species I have worked with in the past include striped bass, white bass, summer flounder, southern flounder and haddock. Currently, my colleagues and I are investigating the aquaculture potential of black sea bass, a highly sought species in the upscale restaurant trade. As this fish is a protogynous hermaphrodite, changing from female to male, and is extremely fragile during its larval stage, we have many interesting problems to address before widespread commercial production is realized.

Some additional research projects in my lab include the culture and conservation of rainbow smelt, stock identification of cod, and production of all-female populations of summer flounder by meiotic gynogenesis.


Selected Publications

Summer Flounder Broodstock

Summer Flounder Broodstock

Walker, A.B. and D.L. Berlinsky. 2011. Effects of partial replacement of fishmeal protein by microalgae on growth, feed intake and body composition of Atlantic cod Gadus morhua. North American Journal of Aquaculture 73:76-83.

Walker, A.B., I.F. Sidor, T. O'Keefe, M. Cremer and D.L. Berlinsky. 2010. Partial replacement of fishmeal with soy protein concentrate in diets of Atlantic cod (Gadus morhua). North American Journal of Aquaculture 72:343-353.

Juvenile Haddock
Juvenile Haddock

Juvenile Haddock

Walker, A.B., D. Ward, K. Duclos, M. Peters and D.L. Berlinsky. 2010. Surface disinfection and removal of adhesiveness from rainbow smelt eggs.  North American Journal of Aquaculture 72:158-163.

Wyatt, L.H., A.L. Baker and D.L. Berlinsky. 2010. Effects of sedimentation and periphyton communities on embryonic rainbow smelt, Osmerus mordax. Aquatic Sciences 72:361-369.

Colburn, H.R., G.C. Nardi, R.J. Borski and D.L. Berlinsky. 2009. Induced meiotic gynogenesis and sex determination in summer flounder (Paralichthys dentatus). Aquaculture 289:175-180.

Black Sea Bass Broodstock

Black Sea Bass Broodstock

Colburn, H.R., A.B. Walker and D.L. Berlinsky. 2009. The effects of temperature on sex differentiation and growth of black sea bass (Centropristis striata L.) Aquaculture Research 40:729-736.

Rideout, R. and D.L. Berlinsky. 2009. Cryopreservation of sperm from Atlantic cod (Gadus morhua) and haddock (Melanogrammus aegelfinus). In: Methods in Reproductive Aquaculture: Marine and Freshwater Species (eds. Cabrita, Robles, Herraez). CRC Press pp. 475-478.

Seaborn, G.T., T.I.J. Smith, M.R. Denson, A.B. Walker and D.L. Berlinsky. 2009. Comparative fatty acid composition of eggs from wild and captive black sea bass (Centropristis striata L.) Aquaculture Research 40:656-668.

Black Sea Bass Juveniles
Black Sea Bass Juveniles

Black Sea Bass Juveniles

Walker, A.B., H.R. Fournier, C.D. Neefus, G.C. Nardi and D.L. Berlinsky. 2009. Partial replacement of fishmeal with Laver (Porphyra spp.) in diets of Atlantic cod (Gadus morhua). North American Journal of Aquaculture 71:39-45.

Colburn, H.R., A.B. Walker, G.C. Nardi and D.L. Berlinsky. 2008. Factors affecting survival of cobia (Rachycentron canadum) during simulated transport. Journal of the World Aquaculture Society 39:678-683.

Rainbow Smelt Collection

Rainbow Smelt Collection

Denson, M.R., W.E. Jenkins, D.L. Berlinsky and T.I.J. Smith. 2007. A comparison of human chorionic gonadotropin and luteinizing hormone releasing hormone analogue for ovulation induction in black sea bass (Centropristis striata). Aquaculture Research 38:918-925.

Fuda, K., B. Smith, M. Lesser, B. Legare, H. Breig, R. Stack and D.L. Berlinsky. 2007. The effects of environmental factors on rainbow smelt, Osmerus mordax, embryos and larvae. Journal of Fish Biology 71:539-549.

Rainbow Smelt Embryo

Rainbow Smelt Embryo

Wirgin I., A. Kovach, L. Maceda, N.K. Roy, J. Waldman and D.L. Berlinsky. 2007. Stock identification of Atlantic cod in U.S. waters using microsatellite and single nucleotide polymorphism (SNP) DNA analysis. Transactions of the American Fisheries Society 136:375-391.

Benton, C.B. and D.L. Berlinsky. 2006. Induced sex change in black sea bass. Journal of Fish Biology 69:1491-1503.

King, W. V and D.L. Berlinsky. 2006. Whole-body corticosteroid and plasma cortisol concentrations in larval and juvenile Atlantic cod Gadus morhua L. following an acute stressor. Aquaculture Research 37:1282-1289.

Cod Sampling

Cod Sampling

King, W., L. Buckley and D.L. Berlinsky. 2006. Effect of acclimation temperature on the acute stress response in juvenile Atlantic cod, Gadus morhua L. and haddock, Melanogrammus aeglefinus L. Aquaculture Research 37:1685-1693.

 

David L. Berlinski
171 Spaulding Hall
Durham, NH 03824
Phone: 
(603) 862-0007