Ortega, Lori A., Heupel, Michelle, Van Beynen, Philip, and Motta, Philip J. (2009) Movement patterns and water quality preferences of juvenile bull sharks (Carcharhinus leucas) in a Florida estuary. Environmental Biology of Fishes, 84 (4). pp. 361-373.

Collins, A.B., Heupel, M.R., and Motta, P.J. (2007) Residence and movement patterns of cownose rays Rhinoptera bonasus within a south-west Florida estuary. Journal of Fish Biology, 71 (4). pp. 1159-1178.

Collins, A.B., Heupel, M.R., Hueter, R.E., and Motta, P.J. (2007) Hard prey specialists or opportunistic generalists? An examination of the diet of the cownose ray, Rhinoptera bonasus. Marine and Freshwater Research, 58 (1). pp. 135-144.