Abstract
The tadpole of Leptodactylus rhodomystax is described based on individuals in several stages of development. We compare them with other tadpoles of the Leptodactylus pentadactylus group and three other sympatric species with similar morphology and color patterns. We also provide comments on spawning sites, clutch size, and the distribution of tadpoles in ponds located in a 64 km 2 study area. The tadpole of L. rhodomystax differs from all species of the L. pentadactylus group (except L. flavopictus) in total length and in having uniform black color. It differs in relation to the LTRF (2(2)/3) of all species except L. lithonaetes and L. rhodonotus. Leptodactylus rhodomystax is generally only found in the western watershed of our study area. Foam nests were deposited between shrubs, roots, and fallen tree trunks near temporary ponds. Tadpoles were free-swimming, benthic, and found in the leaf litter of ponds between January and May. The tadpoles are intraand inter-specific predators of anuran eggs and tadpoles.References
Alford, R.A. (1999) Ecology: Resource Use, Competition, and Predation. In: McDiarmid, R.W. & Altig, R. (Ed.), Tadpoles: The biology of Anuran Larvae. The University of Chicago Press, Chicago and London, pp. 240–278.
Altig, R. & McDiarmid, R.W. (1999) Body Plan: Development and Morphology. In: McDiarmid, R.W. & Altig, R. (Eds.), Tadpoles: The biology of Anuran Larvae. The University of Chicago Press, Chicago and London, pp. 24–51.
Bokermann, W.C.A. (1957) Notas sôbre a biologia de “Leptodactylus flavopictus” Lutz, 1926. Revista Brasileira de Biologia, 17, 495–500.
Caldwell, J.P. (1989) Structure and behaviour of Hyla geographica tadpoles schools, with comments on classification of group behaviour. Copeia, 1989, 935–950.
Davies, S.L., Davies, R.B., James, A. & Talyn, B.C.P. (2000) Reproductive behaviour and larval development of Leptodactylus fallax in Dominica, West Indies. Herpetological Review, 31, 217–220.
Duellman, W.E. (1978) The biology of an Equatorial herpetofauna in Amazonian Ecuador. University of Kansas Museum of Natural History Miscellaneous Publication, 65, 1–352.
Eterovick, P.C. & Sazima, I. (2000) Description of the tadpoles of Leptodactylus syphax, with a comparison of morphological and ecological characters of tadpoles and adults of the species in the L. pentadactylus group (Leptodactylidae, Anura). Amphibia-Reptilia, 21, 341–350.
Frost, D.R. (2007) Amphibian Species of the World: An online reference. Version 5.0, American Museum of Natural History, New York. Available from: http://research.amnh.org/herpetology/amphibia/index.php. (29 April, 2007).
Gascon, C. (1992) The effects of reproductive phenology on larval performance traits in a three-species assemblage of central amazonian tadpoles. Oikos, 65, 307–313.
Gosner, K.L. (1960) A simplified table for staging anuran embryos and larvae with notes on identification. Herpetologica, 16, 183–190.
Hero, J.-M. (1990) An illustrated key to tadpoles occurring in the Central Amazon rainforest, Manaus, Amazonas, Brasil. Amazoniana, 11(2), 201–262.
Hero, J-M. & Galatti, U. (1990) Characteristics distinguishing Leptodactylus pentadactylus and L. knudseni in the Central Amazon Rainforest. Journal of Herpetology, 24, 227–228.
Hero, J-M., Gascon, C. & Magnusson, W.E. (1998): Direct and indirect effects of predation on tadpole community structure in the Amazon rainforest. Australian Journal of Ecology, 23, 474–482.
Heyer, W.R. (1969) The adaptive ecology of the species groups of the genus Leptodactylus (Amphibia, Leptodactylidae). Evolution, 23, 421–428.
Heyer, W.R. (1970) Studies on the genus Leptodactylus (Amphibia: Leptodactylidae). II. Diagnosis and distribution of the Leptodactylus of Costa Rica. Revista de Biología Tropical, 16, 171–205.
Heyer, W.R. (1979) Systematic of the pentadactylus species group of the frog genus Leptodactylus (Amphibia: Leptodactylidae). Smithsonian Contributions to Zoology, 301, 1–43.
Heyer, W.R. (1995) South American rocky habitat Leptodactylus (Amphibia: Anura: Leptodactylidae) with description of two new species. Proceeding of the Biological Society of Washington, 108, 695–716.
Heyer, W.R. (2005) Variation and taxonomic clarification of the large species of the Leptodactylus pentadactylus species group (Amphibia: Leptodactylidae) from Middle America, Northern South America, and Amazonia. Arquivos de Zoologia, 37(3), 269–348.
Heyer, W.R. & Thompson, A. (2000) Leptodactylus rugosus Noble. Catalogue of American Amphibians and Reptiles, 708.1–708.5.
Kenny, J.S. (1969) The Amphibia of Trinidad. Studies of the fauna of Curaçao and other Caribbean Islands, 108, 1–78+XV plates.
Lescure, J. & Letellier, F. (1983) Reproduction en captivité de Leptodactylus fallax Müller, 1926 (Amphibia, Leptodactylidae). Revue Française d’Aquariologie, 10, 61–64.
Lima, A.P. (1992) The tadpole of Leptodactylus riveroi Heyer and Pyburn, 1983 (Anura: Leptodactylidae). Journal of Herpetology, 26, 91–93.
Lima, A.P., Magnusson, W.E., Menin, M., Erdtmann, L.K., Rodrigues, D.J., Keller, C. & Hödl, W. (2006) Guia de sapos da Reserva Adolpho Ducke, Amazônia Central = Guide to the frogs to Reserva Adolpho Ducke, Central Amazonia. Átemma, Manaus. 168 p.
Magnusson, W.E. & Hero, J.-M. (1991) Predation and the evolution of complex oviposition behaviour in Amazon rainforest frogs. Oecologia, 86, 310–318.
Marques Filho, A.O., Ribeiro, M.N.G., Santos, H.M. & Santos, J.M. (1981) Estudos climatológicos da Reserva Florestal Ducke – Manaus – AM. IV. Precipitação. Acta Amazônica, 11, 759–768.
Muedeking, M.H. & Heyer, W.R. (1976) Descriptions of eggs and reproductive patterns of Leptodactylus pentadactylus (Amphibia: Leptodactylidae). Herpetologica, 32, 137–139.
Pounds, J.A. & Crump, M.L. (1994) Amphibian declines and climate disturbance: the case of the golden toad and harlequin frog. Conservation Biology, 8, 72–85.
Silva, W.R., Giaretta, A.A. & Facure, K.G. (2005) On the natural history of South American pepper frog, Leptodactylus labyrinthicus (Spix, 1824) (Anura: Leptodactylidae). Journal of Natural History, 39, 555–566.
Vizzoto, L.D. (1967) Desenvolvimento de anuros da região norte-ocidental do estado de São Paulo. Faculdade de Filosofia, Ciências e Letras, São José do Rio Preto, 161 p.
Zimmerman, B.L. & Bogart, J.P. 1988. Ecology and calls of four species of Amazonian forest frogs. Journal of Herpetology, 22(1), 97–108.
Zina, J. & Haddad, C.F.B. (2005) Reproductive activity and vocalizations of Leptodactylus labyrinthicus (Anura: Leptodactylidae) in Southeastern Brazil. Biota Neotropica, 5(2), 1–11.