References

Barbini, S. A., and Lucifora, L. O. (2011). Feeding habits of the Rio skate, Rioraja agassizi (Chondrichthyes, Rajidae), from off Uruguay and north Argentina. Journal of the Marine Biological Association of the United Kingdom 91, 1175–1184.
| CrossRef |

Barreto, A. C. (2007). Influencia ambiental en la distribución espacial de las clases de edad del pez palo (Percophis brasiliensis) en el Sistema Costero del Atlántico Sudoccidental (34°–41°S). MSc Thesis. Universidad de Buenos Aires, Buenos Aires, Argentina.

Bianchi, G., Gibson, H., Graham, K., Hill, L., Jin, X., Koranteng, K., Manickchand-Heileman, S., Payá, I., Sainsbury, K., Sanchez, F., and Zwanenburg, K. (2000). Impact of fishing on size composition and diversity of demersal fish communities. ICES Journal of Marine Science 57, 558–571.
| CrossRef |

Bovcon, N. D., Cochia, P. D., Góngora, M. E., and Gosztonyi, A. E. (2011). New records of warm-temperate water fishes in central Patagonian coastal waters (southwestern South Atlantic Ocean). Journal of Applied Ichthyology 27, 832–839.
| CrossRef |

Braccini, J. M. (2008). Feeding ecology of two high-order predators from south-eastern Australia: the coastal broadnose and the deepwater sharpnose sevengill sharks. Marine Ecology Progress Series 371, 273–284.
| CrossRef |

Braccini, J. M., and Perez, J. E. (2005). Feeding habits of the sandskate Psammobatis extenta (Garman, 1913): sources of variation in dietary composition. Marine and Freshwater Research 56, 395–403.
| CrossRef |

Brantley, R. K., and Bass, A. H. (1994). Alternative male spawning tactics and acoustic signals in the plainfin midshipman, Porichthys notatus (Teleostei, Batrachoidiformes). Ethology 96, 213–232.
| CrossRef |

Caddy, J. M., and Sharp, G. D. (1986). An ecological framework for marine fishery investigation. Fisheries Technical Paper No. 283. Food and Agriculture Organization of the United Nations, Rome.

Colonello, J. (2009). Ecología reproductiva de tres batoideos (Chondrichthyes): Atlantoraja castelnaui (Rajidae), Rioraja agassizi (Rajidae) y Zapteryx brevirostris (Rhinobatidae). Implicancias de distintas estrategias adaptativas en un escenario de explotación comercial intensiva. PhD Thesis. Universidad Nacional de La Plata, La Plata, Argentina.

Cortés, E. (1997). A critical review of methods of studying fish feeding based on analysis of stomach contents: application to elasmobranch fishes. Canadian Journal of Fisheries and Aquatic Sciences 54, 726–738.
| CrossRef |

Cousseau, M. B., Figueroa, D. E., Díaz de Astarloa, J. M., Mabragaña, E., and Lucifora, L. O. (2007). Rayas, Chuchos y otros Batoideos del Atlántico Sudoccidental (34°S–55°S). (Instituto Nacional de Investigación y Desarrollo Pesquero: Mar del Plata).

Crane, J. M. (1965). Bioluminescent courtship display in the teleost Porichthys notatus. Copeia 1965, 239–241.
| CrossRef |

Crawley, M. J. (2005). ‘Statistics: an Introduction Using R.’ (Wiley: Chichester, UK.)

Dean, M. N., Wilga, C. D., and Summers, A. P. (2005). Eating without hands or tongue: specialization, elaboration and the evolution of prey processing mechanisms in cartilaginous fishes. Biology Letters 1, 357–361.
| CrossRef |

Di Giácomo, E. E., and Perier, M. R. (1996). Feeding habits of cockfish, Callorhinchus callorhynchus (Holocephali: Callorhynchidae), in Patagonian Waters (Argentina). Marine and Freshwater Research 47, 801–808.
| CrossRef |

Ebert, D. A., and Bizzarro, J. J. (2007). Standardized diet compositions and trophic levels of skates (Chondrichthyes, Rajiformes, Rajoidei). Environmental Biology of Fishes 80, 221–237.
| CrossRef |

Estes, J. A., Terborgh, J., Brashares, J. S., Power, M. E., Berger, J., Bond, W. J., Carpenter, S. R., Essington, T. E., Holt, R. D., Jackson, J. B. C., Marquis, R. J., Oksanen, L., Oksanen, T., Paine, R. T., Pikitch, E. K., Ripple, W. J., Sandin, S. A., Scheffer, M., Schoener, T. W., Shurin, J. B., Sinclair, A. R. E., Soulé, M. E., Virtanen, R., and Wardle, D. A. (2011). Trophic downgrading of planet earth. Science 333, 301–306.
| CrossRef | CAS |

Ferretti, F., Worm, B., Britten, G. L., Heithaus, M. R., and Lotze, H. K. (2010). Patterns and ecosystem consequences of shark declines in the oceans. Ecology Letters 13, 1055–1071.

Franklin, A. B., Shenk, T. M., Anderson, D. R., and Burnham, K. P. (2001). Statistical model selection: an alternative to null hypothesis testing. In ‘Modeling in Natural Resource Management: Development, Interpretation, and Application’. (Eds T. M. Shenk and A. B. Franklin.) pp. 75–90. (Island Press: Washington, DC.)

Frazzetta, T. H. (1988). The mechanics of cutting and the form of shark teeth (Chondrichthyes, Elasmobranchii). Zoomorphology 108, 93–107.
| CrossRef |

Guerrero, R. A., and Piola, R. A. (1997). Masas de agua de la plataforma continental. In ‘El Mar Argentino y sus Recursos Pesqueros. Vol. 1’. (Ed. E. E. Boschi.) pp. 107–118. (Instituto Nacional de Investigación y Desarrollo Pesquero: Mar del Plata, Argentina.)

Heithaus, M. R., Frid, A., Wirsing, A. J., and Worm, B. (2008). Predicting ecological consequences of marine top predator declines. Trends in Ecology & Evolution 23, 202–210.
| CrossRef |

Heithaus, M. R., Frid, A., Vaudo, J. J., Worm, B., and Wirsing, A. J. (2010). Unraveling the ecological importance of elasmobranchs. In ‘Sharks and their Relatives II. Biodiversity, Adaptive Physiology, and Conservation’ (Eds J. C. Carrier, J. A. Musick, and M. R. Heithaus.) pp. 611–637. (CRC Press: Boca Raton, FL.)

Hozbor, N., Massa, A. M., and Vooren, C. M. (2004). Atlantoraja castelnaui. Available at http://www.iucnredlist.org [Accessed 15 June 2011].

Iribarne, O. O. (1991). Life history and distribution of the small south-western Atlantic octopus, Octopus tehuelchus. Journal of Zoology 223, 549–565.
| CrossRef |

Johnson, J. B., and Omland, K. S. (2004). Model selection in ecology and evolution. Trends in Ecology & Evolution 19, 101–108.
| CrossRef |

Juanes, F., Buckel, J. A., and Scharf, F. S. (2002). Feeding ecology of piscivorous fishes. In ‘Handbook of Fish Biology and Fisheries, Vol. 1. Fish Biology’. (Eds P. J. Hart and J. D. Reynolds.) pp. 267–283. (Blackwell Science: Malden, MA.)

Koen Alonso, M., Crespo, E. A., García, N. A., Pedraza, S. N., Mariotti, P. A., Berón Vega, B., and Mora, N. J. (2001). Food habits of Dipturus chilensis (Pisces: Rajidae) off Patagonia, Argentina. ICES Journal of Marine Science 58, 288–297.
| CrossRef |

Laureda, C. E., and Martínez, C. C. (1981). Alimentación de una raya costera marplatense (Raja castelnaui M. Ribeiro, 1907). BSc Thesis. Universidad de Buenos Aires, Buenos Aires, Argentina.

Lowe, C. G., Wetherbee, B. M., Crow, G. L., and Tester, A. L. (1996). Ontogenetic dietary shifts and feeding behavior of the tiger shark, Galeocerdo cuvier, in Hawaiian waters. Environmental Biology of Fishes 47, 203–211.
| CrossRef |

Lucas, A. J., Guerreo, R. A., Mianzan, H. W., Acha, E. M., and Lasta, C. A. (2005). Coastal oceanographic regimes of the Northern Argentine Continental Shelf (34°–43°S). Estuarine, Coastal and Shelf Science 65, 405–420.
| CrossRef |

Lucifora, L. O. (2003). Ecología y conservación de los grandes tiburones costeros de Bahía Anegada, Provincia de Buenos Aires. PhD thesis, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina.

Lucifora, L. O., Valero, J. L., Bremec, C. S., and Lasta, M. L. (2000). Feeding habits and prey selection by the skate Dipturus chilensis (Elasmobranchii: Rajidae) from the south-western Atlantic. Journal of the Marine Biological Association of the United Kingdom 80, 953–954.
| CrossRef |

Lucifora, L. O., Menni, R. C., and Escalante, A. H. (2005). Reproduction, abundance and feeding habits of the broadnose sevengill shark Notorynchus cepedianus in north Patagonia, Argentina. Marine Ecology Progress Series 289, 237–244.
| CrossRef |

Lucifora, L. O., García, V. B., Menni, R. C., and Escalante, A. H. (2006). Food habits, selectivity, and foraging modes of the school shark, Galeorhinus galeus. Marine Ecology Progress Series 315, 259–270.
| CrossRef |

Lucifora, L. O., García, V. B., Menni, R. C., Escalante, A. H., and Hozbor, N. M. (2009a). Effects of body size, age and maturity stage on diet in a large shark: ecological and applied implications. Ecological Research 24, 109–118.
| CrossRef |

Lucifora, L. O., García, V. B., and Escalante, A. H. (2009b). How can the feeding habits of the sand tiger shark influence the success of conservation programs? Animal Conservation 12, 291–301.
| CrossRef |

Magurran, A. E. (2004). ‘Measuring Biological Diversity.’ (Blackwell: Malden, MA.)

Menni, R. C., and Stehmann, M. F. W. (2000). Distribution, environment and biology of batoid fishes off Argentina, Uruguay and Brazil. A review. Revista del Museo Argentino de Ciencias Naturales 2, 69–109.

Myers, R. A., Baum, J. K., Shepherd, T., Powers, S. P., and Peterson, C. H. (2007). Cascading effects of the loss of apex predatory sharks from a coastal ocean. Science 315, 1846–1850.
| CrossRef | CAS |

Paesch, L. (2000). Hábitos alimentarios de algunas especies de elasmobranquios en el frente oceánico del Río de la Plata. Frente Marítimo 18, 71–90.

Perrotta, R. G., and Fernández Giménez, A. (1996). Estudio preliminar sobre la edad y el crecimiento del pez palo Percophis brasiliensis (Quoy & Gaimard, 1824). INIDEP Informe Técnico 10, 25–36.

Pinkas, L. M., Oliphant, S., and Iverson, I. L. K. (1971). Food habits of albacore, bluefin tuna and bonito in California waters. California Fish and Game 152, 1–105.

Ré, M. E., and Gómez Simes, E. (1992). Hábitos alimentarios del pulpo (Octopus tehuelchus). I. Análisis cuali-cuantitativos de la dieta en el intermareal del Puerto de Lobos, Golfo San Matías (Argentina). Frente Marítimo 11, 119–128.

San Martín, M. J., Braccini, J. M., Tamini, L. L., Chiaramonte, G. E., and Perez, J. E. (2007). Temporal and sexual effects in the feeding ecology of the marbled sand skate Psammobatis bergi Marini, 1932. Marine Biology 151, 505–513.
| CrossRef |

Scharf, F. S., Juanes, F., and Sutherland, M. (1998). Inferring ecological relationships from the edges of scatter diagrams: comparison of regression techniques. Ecology 79, 448–460.
| CrossRef |

Scharf, F. S., Juanes, F., and Rountree, R. A. (2000). Predator size–prey size relationships of marine fish predators: interspecific variation and effects of ontogeny and body size on trophic-niche breadth. Marine Ecology Progress Series 208, 229–248.
| CrossRef |

Smale, M. J. (1991). Occurrence and feeding of three shark species, Carcharhinus brachyurus, C. obscurus and Sphyrna zygaena, on the Eastern Cape coast of South Africa. South African Journal of Marine Science 11, 31–42.
| CrossRef |

Soares, L. S. H., Rossi-Wongtschowski, C. L. D. B., Alvares, L. M. C., Muto, E. Y., and Gasalla, M. A. (1992). Grupos tróficos de peixes demersais da plataforma continental interna de Ubatuba, Brasil. I. Chondrichthyes. Boletim do Instituto Oceanográfico, São Paulo 40, 79–85.

Stehmann, M. F. W. (2002). Proposal of a maturity stages scale for oviparous and viviparous cartilaginous fishes (Pisces, Chondrichthyes). Archiv fuer Fischerei und Meeresforschung 50, 23–48.

Symonds, M. E., and Moussalli, A. (2011). A brief guide to model selection, multimodel inference and model averaging in behavioural ecology using Akaike’s information criterion. Behavioral Ecology and Sociobiology 65, 13–21.
| CrossRef |

Thrush, S. F., Pridmore, R. D., Hewitt, J. E., and Cummings, V. J. (1991). Impact of ray feeding disturbances on sandflat macrobenthos: do communities dominated by polychaetes or shellfish respond differently? Marine Ecology Progress Series 69, 245–252.
| CrossRef |

Treloar, M. A., Laurenson, L. J. B., and Stevens, J. D. (2007). Dietary comparisons of six skate species (Rajidae) in south-eastern Australian waters. Environmental Biology of Fishes 80, 181–196.
| CrossRef |

VanBlaricom, G. R. (1982). Experimental analyses of structural regulation in a marine sand community exposed to oceanic swell. Ecological Monographs 52, 283–305.
| CrossRef |

Venables, W. N., and Ripley, B. D. (2002). ‘Modern Applied Statistics with S-Plus.’ 4th edn. (Springer: New York.)