Grim, J.M. & Ding, A.A. & Bennett, W.A. (2012)
Differences in activity level between cownose rays (Rhinoptera bonasus) and Atlantic stingrays (Dasyatis sabina) are related to differences in heart mass, hemoglobin concentration, and gill surface area. Fish Physiology and Biochemistry, 38(5), 1409–1417
DOI: 10.1007/s10695-012-9628-y
Grim, J.M. & Hyndman, K.A. & Kriska, T. & Girotti, A.W. & Crockett, E.L. (2011)
Relationship between oxidizable fatty acid content and level of antioxidant glutathione peroxidases in marine fish. Journal of Experimental Biology, 214(22), 3751–3759
DOI: 10.1242/jeb.058214