Rhinella jimi (Anura, Bufonidae) is an introduced species in the archipelago of Fernando de Noronha, north-eastern Brazil. It is known as one of the greatest amphibian anomaly hotspots in the world, with almost half of the adult individuals in the population having external anomalies, but tadpoles from this population have not previously been examined. Therefore, we evaluated the presence of anomalies in tadpoles of this population, described their types and identified possible handicaps of anomalous tadpoles in foraging behaviour and food intake. We found anomalies in 52.5% of all tadpoles inspected, mostly involving labial teeth. Anomalous tadpoles, when compared to normal individuals, spend less time foraging and have a lower foraging efficiency. We also observed that anomalous toadlets originate both from normal and anomalous tadpoles. We suggest that the reduced feeding fitness may result in a reduced growing rate, longer time spent until metamorphosis, higher predation risk, different body mass, size and morphology in metamorphs and adults. However, this apparent handicap may not affect the post-metamorphic population, as anomalous adults may rise from normal tadpoles.244237243Afonso, J.M., Montero, D., Robaina, L., Astrga, N., Association of a lordosis-scoliosis-kyphosis deformity in gilthead seabream (Sparusaurata) with family structure (2000) Fish Physiology and Biochemistry, 22, pp. 159-163Agostini, M.G., Kacoliris, F., Demetrio, P., Natale, G.S., Abnormalities in amphibian populations inhabiting agroecosystems in northeastern Buenos Aires Province, Argentina (2013) Diseases of Aquatic Organisms, 104, pp. 163-171Altig, R., Comments on the descriptions and evaluations of tadpole mouthpart anomalies (2007) Herpetological Conservation and Biology, 2, pp. 1-4Altig, R., McDiarmid, R.W., Body Plan: Development and Morphology (1999) The biology of anuran larvae, pp. 24-51. , McDiarmid, R.W. & Altig, R. (eds.). Chicago: The University of Chicago PressAnkley, G.T., Tietge, J.E., Defoe, D.L., Jensen, K.M., Effects of ultraviolet light and methoprene on survival and development of Rana pipiens (1998) Environmental Toxicology and Chemistry, 17, pp. 2530-2542Bacon, J.P., Fort, C.E., Todhunter, B., Mathis, M., Fort, D.J., Effects of multiple chemical, physical, and biological stressors on the incidence and types of abnormalities observed in Bermuda's cane toads (Rhinella marina) (2013) Journal of Experimental Zoology, 320B, pp. 218-237Ballengée, B., Sessions, S.K., Explanation for missing limbs in deformed amphibians (2009) Journal of Experimental Zoology Part B, 312, pp. 770-779Blaustein, A.R., Kiesecker, J.M., Chivers, D.P., Anthony, R.G., Ambient UV-B radiation causes deformities in amphibian embryos (1997) Proceedings of the National Academy of Sciences of the United States of America, 94, pp. 13735-13737Blaustein, A.R., Johnson, P.T., The complexity of deformed amphibians (2003) Frontiers in Ecology and the Environment, 1, pp. 87-94Blaustein, A.R., Han, B.A., Relyea, R.A., Johnson, P.T.J., The complexity of amphibian population declines: Understanding the role of co-factors in driving amphibian losses (2011) Annals of the New York Academy of Sciences, 123, pp. 108-119Bowerman, J., Johnson, P.T.J., Bowerman, T., Sublethal predators and their injured prey: Linking aquatic predators and severe limb abnormalities in amphibians (2010) Ecology, 91, pp. 242-251Bresler, J., The development of labial teeth of salientian larvae in relation to temperature (1954) Copeia, 1954, pp. 207-211Brett Sutherland, M.A., Gouchie, G.M., Wassersug, R.J., Can visual stimulation alone induce phenotypically plastic responses in Rana sylvatica tadpole oral structures (2009) Journal of Herpetology, 43, pp. 165-168Bridges, C.M., Long-term effects of pesticide exposure at various life stages of the southern leopard frog (Rana sphenocephala) (2000) Archives of Environmental Contamination and Toxicology, 39, pp. 91-96Burger, J., Snodgrass, J.W., Oral deformities in several species of frogs from the Savannah River Site, USA (2000) Environmental Toxicology and Chemistry, 19, pp. 2519-2524Drake, D.L., Altig, R., Grace, J.B., Walls, S.C., Occurrence of oral deformities in larval anurans (2007) Copeia, 2007, pp. 449-458Egea-Serrano, A., Relyea, R.A., Tejedo, M., Torralva, M., Understanding of the impact of chemicals on amphibians: A meta-analytic review (2012) Ecology and Evolution, 2, pp. 1382-1397Ely, C.A., Development of Bufo marinus larvae in dilute seawater (1944) Copeia, 1944, p. 256Formanowicz, D.R., Jr., Anuran tadpole/aquatic insect predator-prey interactions: Tadpole size and predator capture success (1986) Herpetologica, 42, pp. 367-373Fellers, G.M., Green, D.E., Longcore, J.E., Oral chytridiomycosis in the mountain yellow-legged frog (Rana muscosa) (2001) Copeia, 2001, pp. 945-953Gosner, K.L., A simplified table for staging anuran embryos larvae with notes on identification (1960) Herpetologica, 16, pp. 183-190Jara, F.G., Perotti, M.G., Risk of predation and behavioural response in three anuran species: Influence of tadpole size and predator type (2010) Hydrobiologia, 644, pp. 313-324Johnson, P.T.J., Lunde, K.B., Ritchie, E.G., Launer, A., The effect of trematode infection on amphibian limb development and survivorship (1999) Science, 284, pp. 802-804Karraker, N.E., Are embryonic and larval green frogs (Rana clamitans) insensitive to road deicing salt? (2007) Herpetological Conservation and Biology, 2, pp. 35-41Lannoo, M., (2008) The collapse of aquatic ecosystems: Malformed frogs, , Berkeley: University of California PressLunde, K.B., Johnson, P.T.J., A practical guide for the study of malformed amphibians and their causes (2012) Journal of Herpetology, 46, pp. 429-441Mansfield, K.G., Land, E.D., Cryptorchidism in Florida panthers: Prevalence, features, and influence of genetic restoration (2002) Journal of Wildlife Diseases, 38, pp. 693-698Medina, R.G., Ponssa, M.L., Guerra, C., Aráoz, E., Amphibian abnormalities: Historical records of a museum collection in Tucuman Province, Argentina (2013) Herpetological Journal, 23, pp. 193-202Olsson, M., Gullberg, A., Tegelstrom, H., Malformed offspring, sibling matings, and selection against inbreeding in the sand lizard (Lacerta agilis) (1996) Journal of Evolutionary Biology, 9, pp. 229-242Ouellet, M., Amphibian deformities: Current state of knowledge (2000) Ecotoxicology of amphibians and reptiles, pp. 617-661Linder, G., Bishop, C.A., Sparling, D.W., USA: Society of Environmental Toxicology and Chemistry (SETAC), , PressRachowicz, L.J., Mouthpart pigmentation in Rana muscosa tadpoles: Seasonal changes without chytridiomycosis (2002) Herpetological Review, 33, pp. 262-265Roberts, C.D., Dickinson, T.E., Ribeiro ondatrae causes limb abnormalities in a Canadian amphibian community (2012) Canadian Journal of Zoology, 90, pp. 808-814Rowe, C.L., Kinney, O.M., Fiori, A.P., Congdon, J.D., Oral deformities in tadpoles (Rana catesbeiana) associated with coal ash deposition: Effects on grazing ability and growth (1996) Freshwater Biology, 36, pp. 723-730Rowe, C.L., Kinney, O.M., Congdon, J.D., Oral deformities in tadpoles of the Bullfrog (Rana catesbeiana) caused by conditions in a polluted habitat (1998) Copeia, 1998, pp. 244-246Toledo, L.F., Ribeiro, R.S., The archipelago of Fernando de Noronha: An intriguing malformed toad hotspot in South America (2009) EcoHealth, 6, pp. 351-357Toledo, L.F., Predation of juvenile and adult anurans by invertebrates: Current knowledge and perspectives (2005) Herpetological Review, 36, pp. 395-400Tolledo, J., Toledo, L.F., Tadpole of Rhinella jimi (Anura: Bufonidae) with comments on the tadpoles of species of the Rhinella marina group (2010) Journal of Herpetology, 44, pp. 480-483Travis, J., Anuran size at metamorphosis: Experimental test of a model based on intraspecific competition (1984) Ecology, 65, pp. 1155-1160Venesky, M.D., Parris, M.J., Storfer, A., Impacts of Batrachochytrium dendrobatidis infection on tadpole foraging performance (2009) EcoHealth, 6, pp. 565-575Venesky, M.D., Wassersug, R.J., Parris, M.J., How does a change in labial tooth row number affect feeding kinematics and foraging performance of a ranid tadpole (Lithobates sphenocephalus)? (2010) Biological Bulletin, 218, pp. 160-168Venesky, M.D., Rossa-Feres, D., Nomura, F., Pezzuti, T., Comparative feeding kinematics of tropical hylid tadpoles (2013) Journal of Experimental Biology, 216, pp. 1928-1937Vieira, C.A., Toledo, L.F., Longcore, J.E., Body length of Hylodes cf. ornatus and Lithobates catesbeianus tadpoles, depigmentation of mouthparts, and presence of Batrachochytrium dendrobatidis are related (2013) Brazilian Journal of Biology, 73, pp. 195-199Wassersug, R.J., Yamashita, M., Plasticity and constraints on feeding kinematics in anuran larvae (2001) Comparative Biochemistry Physiology Part A, 31, pp. 183-195Williams, R.N., Bos, D.H., Gopurenko, D., Dewoody, J.A., Amphibian malformations and inbreeding (2008) Biology Letters, 4, pp. 549-552Zar, J.H., (1999) Biostatistical Analysis, , 4th ed, New Jersey: Prentice Hal
