Results 171 to 180 of about 3,178 (206)
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Alkaloids of Neotropical Poison Frogs (Dendrobatidae)
1982Poisons for arrows and blow darts have been derived from a wide spectrum of sources in both the plant and animal kingdoms. One unique source of such poisons is the skin secretion of certain brightly colored frogs native to the rain forests of Western Colombia. The Noanama and Embera Indians of this region undoubtedly used secretions from these frogs to
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Diet of Epipedobates flavopictus (Anura: Dendrobatidae) in a Neotropical Savanna
Journal of Herpetology, 2004A central issue in comparative biology is identifying the relative importance of historical (phylogenetic) versus present-day (ecological) factors in shaping phenotypic traits of organisms. Herein, we investigate effects of sex, ontogeny, and season on diet of Epipedobates flavopictus, a species restricted to open landscapes in central Brazil. Based on
Graziela M. Biavati +2 more
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Classification of skin alkaloids from neotropical poison-dart frogs (dendrobatidae)
Toxicon, 1978Abstract Dendrobatid frogs have evolved an imposing number of unique alkaloids, apparently as a chemical defense against predation. Toxic skin extracts from a majority (18) of the approximately two dozen species of Dendrobates (sensu lato) were analyzed by thin-layer chromatography, gas chromatography and mass spectrometry.
J W, Daly +3 more
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Morphology of the granular secretory glands in skin of poison-dart frogs (Dendrobatidae)
Tissue and Cell, 1979The granular glands of nine species of dendrobatid frogs were examined using light and electron microscopy. The glands are surrounded by a discontinuous layer of smooth muscle cells. Within the glands proper the secretory cells form a true syncytium. Multiple flattened nuclei lie at the periphery of the gland.
M, Neuwirth +3 more
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The tadpole of Ameerega berohoka Vaz-Silva and Maciel, 2011 (Anura, Dendrobatidae)
ZootaxaSantos, Danusy Lopes, Vaz-Silva, Wilian, Maciel, Natan Medeiros, Oliveira, Seixas Resende De, Andrade, Sheila Pereira De, Bittar, Bruno Barros, Nomura, Fausto (2024): The tadpole of Ameerega berohoka Vaz-Silva and Maciel, 2011 (Anura, Dendrobatidae). Zootaxa 5474 (3): 297-300, DOI: 10.11646/zootaxa.5474.3.7, URL: http://dx.doi.org/10.11646/zootaxa.5474.
DANUSY LOPES SANTOS +6 more
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South American Journal of Herpetology, 2010
ABSTRACT. The tadpole of Ranitomeya variabilis is described based on preserved specimens from captive breed specimens. The tadpole of R. variabilis is similar to other dendrobatid tadpoles regarding tooth row formula, body shape, location of the spiracle, vent tube, and oral disc. It differs from other dendrobatid species, e.g., Allobates, Oophaga, and
Simon Masche +2 more
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ABSTRACT. The tadpole of Ranitomeya variabilis is described based on preserved specimens from captive breed specimens. The tadpole of R. variabilis is similar to other dendrobatid tadpoles regarding tooth row formula, body shape, location of the spiracle, vent tube, and oral disc. It differs from other dendrobatid species, e.g., Allobates, Oophaga, and
Simon Masche +2 more
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Vocalisation and larval transportation of male Colostethus subpunctatus (Anura: Dendrobatidae)
Amphibia-Reptilia, 1997Abstract We studied calling activity, tadpole transportation and deposition of Colostethus subpunctatus males in the high mountains of Colombia. Calling as well as tadpole transportation and deposition occurred during daylight and night hours.
María Claudia Fandiño +2 more
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Biologically Active Alkaloids from Poison Frogs (Dendrobatidae)
Journal of Toxicology: Toxin Reviews, 1982AbstractA total of over one hundred biologically active alkaloids have been characterized in skin extracts from dendrobatid frogs. Five major classes have been defined: The highly toxic batrachotoxins are steroidal alkaloids which prevent interactivation of sodium channels in nerve and muscle.
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Larval morphology of Dart-Poison Frogs (Anura: Dendrobatoidea: Aromobatidae and Dendrobatidae)
Zootaxa, 2013Tadpoles in the superfamily Dendrobatoidea (families Aromobatidae and Dendrobatidae), housed in zoological collections or illustrated in publications, were studied. For the most part, tadpoles of species within the family Aromobatidae, the subfamilies Colostethinae and Hyloxalinae (of the family Dendrobatidae), and those of the genus Phyllobates ...
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Courtship Behavior in Colostethus collaris (Dendrobatidae)
Copeia, 1974Jim W. Dole, Pedro Durant
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