Attributes / relations provided by
♦ ¹Feeding ecology and trophic level of the banded guitarfish, Zapteryx exasperata, inferred from stable isotopes and stomach contents analysis, María-del-Pilar Blanco-Parra, Felipe Galván-Magaña, J. Fernando Márquez-Farías, Carlos Alberto Niño-Torres, Environmental Biology of Fishes, September 2012, Volume 95, Issue 1, pp 65-77
♦ ²Salazar P., S. and Bustamante, Rodrigo H. (2003) Effects of the 1997-1998 El Niño on population size and diet of the Galápagos sea lion (Zalophus wollebaeki). Noticias de Galapagos, 62, pp. 40-45.