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27 results for “Dendrobates”
Fig. 4. Forest Islands 1, 2 in The Blue Dyeing Poison-Dart Frog, Dendrobates tinctorius (Dendrobates azureus, Hoogmoed 1969): extant in Suriname based on a rapid survey
Fig. 4. Forest Islands 1, 2, and 4, extant vegetation comparison between Google Earth images for 2004 (A) and 1969 (B). Red outlines delineating the three forest islands were juxtaposed from the 2004 image onto the 1969 image.
Fig. 1 in The Blue Dyeing Poison-Dart Frog, Dendrobates tinctorius (Dendrobates azureus, Hoogmoed 1969): extant in Suriname based on a rapid survey
Fig. 1. Map of Suriname, South America (upper left inset) with approximate location of Sipaliwini savannah indicated by the black box. Forest Islands are outlined in red and identified by numbers corresponding to those of Hoogmoed (1969, 2019). Arrows indicate locations of the 50 x 50 m plots surveyed in Forest Islands 1, 2, and 4 during 16–18 June 2015. Forest Island 3 was not surveyed. In this 2004 Google image, savanna vegetation surrounding the forest islands had been recently burned by indigenous hunters.
Fig. 12 in Development and gastrulation in Hyloxalus vertebralis and Dendrobates auratus (Anura: Dendrobatidae)
Fig. 12. Gastrulation of dendrobatid frogs in comparison with X. laevis. To facilitate the comparison, the stages (st) are given as column headings: Stage 12, late-gastrula; Stage 12.5, advanced late-gastrula; Stage 13, slit blastopore stage. The letters in the upper right-hand corner indicate the species: Ab, Ameerega bilinguis; Da, Dendrobates auratus; Ea, Epipedobates anthonyi; Et, Epipedobates tricolor; Hv, Hyloxalus vertebralis; Xl, Xenopus laevis. (A–C) Diagrams of X. laevis embryos. (D–R) Sagittal sections of gastrulae. (D–F) Embryos of E. anthonyi. (The section in E was reproduced from Montenegro–Larrea and del Pino, 2011). (G–I) Embryos of E. tricolor. (J–L) Embryos of H. vertebralis. (M–O) Embryos of A. bilinguis. (P–R) Embryos of D. auratus. a, archenteron; bl, blastocoel; cbc; circumblastoporal collar; dl, dorsal blastopore lip; yp, yolk plug.
Fig. 4. Stage 14 in Development and gastrulation in Hyloxalus vertebralis and Dendrobates auratus (Anura: Dendrobatidae)
Fig. 4. Stage 14: Early neural fold stage of H. vertebralis and D. auratus embryos. Micrographs of H. vertebralis embryos are shown in A, C, and micrographs of D. auratus embryos are shown in B, D. Sections shown in C–D were stained for cell nuclei. (A) Lateral view of a neural fold stage embryo. (B) Dorsal view of a neural fold stage embryo. The neural plate was visible in embryos of the two species. (C) Cross section through the region of the trunk (Reproduced from Hervas and del Pino, 2013). (D) Cross section through the caudal region of an embryo. The notochord was visible in C and D. b, blastopore; e, endoderm; ec, ectoderm; n, notochord; nf, neural fold; pm, paraxial mesoderm.
Fig. 8. Stage 18 in Development and gastrulation in Hyloxalus vertebralis and Dendrobates auratus (Anura: Dendrobatidae)
Fig. 8. Stage 18: Muscular activity stage of H. vertebralis and D. auratus embryos. Micrographs of H. vertebralis embryos are shown in A, C, E, and micrographs of D. auratus embryos are shown in B, D, F. Sections shown in C–D were stained for cell nuclei. (A) Lateral view of an embryo. (B) Dorsal view of an embryo. The gill buds were visible on each side of the head in embryos of both species. (C–D) Cross sections through the trunk. The cavity in D corresponds to the gut. (E–F) Horizontal sections. A row of numerous somites was detected on each side of the notochord. The brain and the otocysts were visible in E, and the gut was visible in F. bn, brain; ec, ectoderm; g, gut; gb, gill bud; hy, hyoid arch; ma, mandibular arch; n notochord; nt, neural tube; ot, otocyst; p, pronephros; s, somite.
Fig. 1 in Development and gastrulation in Hyloxalus vertebralis and Dendrobates auratus (Anura: Dendrobatidae)
Fig. 1. External views of H. vertebralis embryos from cleavage to the neurula stage. (A) Stage 2: Two-cell stage. (B) Stage 4: Eightcell stage. (C) Stage 5: Sixteen-cell stage. (D) Stage 9: Advanced blastula. (E) Stage 10: Early gastrula. (F) Stage 11: Mid-gastrula. (G) Stage 12: Late-gastrula. (H) Stage 12.5: Late-gastrula with a small yolk plug. (I) Stage 13: Slit-blastopore stage. (J) Stage 13.5: Advanced slit-blastopore stage. The neural plate was visible. (K) Stage 14: Early neural fold stage. (L) Stage 15: Mid-neural fold stage. In this and the following figures, the developmental stage (st) is given in top right-hand corner of each image; b, blastopore; c, cleavage furrow; dl, dorsal blastopore lip; np, neural plate; nt, neural tube; yp, yolk plug.
Fig. 3 in Development and gastrulation in Hyloxalus vertebralis and Dendrobates auratus (Anura: Dendrobatidae)
Fig. 3. Internal morphology of the H. vertebralis and D. auratus early gastrula. Micrographs of H. vertebralis embryos are shown in A, B, E–G, and micrographs of D. auratus embryos are shown in C, D, H–J. Sections shown in E–G, I–J were stained for cell nuclei. (A) Stage 9: Sagittal section of an advanced blastula. (B) Stage 10: Sagittal section of an early gastrula. (C) Stage 10: Sagittal section of an early gastrula. (D) Stage 11: Sagittal section of the mid-gastrula. (E) Stage 10: Higher magnification of the dorsal blastopore groove from the embryo in B. The arrow signals a bottle cell. (F) Stage 10: The blastocoel roof of an early gastrula. It was two-three cells in thickness. (G) Stage 12.5: One cell layer in the blastocoel roof of a late-gastrula. (H) Stage 10: Higher magnification from the embryo in C. The arrow signals a bottle cell. (I) Stage 10: The blastocoel roof of an early gastrula of two cells in thickness. (J) Stage 11: The blastocoel roof of mid-gastrula with one-two cells in thickness. bl, blastocoel; bg, blastopore groove; dl, dorsal blastopore lip; vl, ventral blastopore lip.
Fig. 7. Stage 17 in Development and gastrulation in Hyloxalus vertebralis and Dendrobates auratus (Anura: Dendrobatidae)
Fig. 7. Stage 17: Tail bud stage of H. vertebralis embryos. (A) Lateral view of an embryo. (B) Cross section through the trunk region of the embryo in A. (C) Horizontal section at the level of the notochord and somites with the rostral region towards the left. A row of somites was detected on each side of the notochord. A portion of the neural tube was detected in the rostral region of the section. br, branchial arch; e, endoderm; ec, ectoderm; hy, hyoid arch; ma, mandibular arch; n notochord; nt, neural tube; s, somite.
Fig. 6. Stage 16 in Development and gastrulation in Hyloxalus vertebralis and Dendrobates auratus (Anura: Dendrobatidae)
Fig. 6. Stage 16: Closure of the neural tube in embryos of H. vertebralis and D. auratus. Micrographs of H. vertebralis embryos are shown in A, C, and micrographs of D. auratus embryos are shown in B, D. Sections shown in C–D were stained for cell nuclei. (A–B) Dorsal views of embryos. The neural tube was closed. The branchial arches were visible in the head region. (C) Cross section through the rostral region, anterior to the notochord. The neural tube was completely closed. (Reproduced from Hervas and del Pino, 2013). (D) Cross sections through the trunk region of an embryo. The somites were visible. br, branchial arch; e, endoderm; ec, ectoderm; hy, hyoid arch; ma, mandibular arch; m, mesoderm; n notochord; nt, neural tube; s, somite.
Fig. 2 in Development and gastrulation in Hyloxalus vertebralis and Dendrobates auratus (Anura: Dendrobatidae)
Fig. 2. External views of H. vertebralis embryos from closure of the neural tube to hatching. (A) Stage 16.5: Closure of the neural tube. (B) Stage 17: Tail bud stage. The brachial arches protruded on the sides of the head. (C) Stage 19: Embryo at the muscular response stage. (D) Stage 19.5: Gill buds of the two external gill pairs were visible. (E) Stage 21: Development of the external gills. There were seven branches in the first gill pair and the second gill pair was unbranched. (F) Stage 25: Embryo at hatching. br, branchial arch; e, eye; g, gills; gb, gill bud; tf, tail fin.
Fig. 5. Stage 15 in Development and gastrulation in Hyloxalus vertebralis and Dendrobates auratus (Anura: Dendrobatidae)
Fig. 5. Stage 15: Mid-neural fold stage of embryos of H. vertebralis and D. auratus. Micrographs of H. vertebralis embryos are shown in A, C, and micrographs of D. auratus embryos are shown in B, D. Sections shown in C–D were stained for cell nuclei. (A–B) Dorsal views of embryos. The neural tube was open in embryos of both species. (C) Cross section through the caudal region. The notochord was not detected in this caudal region (Reproduced from Hervas and del Pino, 2013). (D) Cross section through the trunk region. The notochord was visible. e, endoderm; ec, ectoderm; n, notochord; nf neural fold; pm, paraxial mesoderm.
Fig. 10. Stages 20–22 in Development and gastrulation in Hyloxalus vertebralis and Dendrobates auratus (Anura: Dendrobatidae)
Fig. 10. Stages 20–22: External gill development in H. vertebralis. (A) Stage 20: Circulation to the external gills. Three branches were visible in the first gill pair. The second gill pair was unbranched. (B) Stage 22: The external gills enlarged. Seven branches were visible in the first gill pair. The second gill pair was unbranched. (C) Stage 20: Horizontal section at the level of the brain. (D) Stage 22: Horizontal section at the level of the internal gills. bn, brain; ey, eye; ec, ectoderm; fg, first gill pair; g, internal gill; nt, notochord; ot, otocyst; s, somite; sg, second gill pair.
Fig. 9. Stage 19 in Development and gastrulation in Hyloxalus vertebralis and Dendrobates auratus (Anura: Dendrobatidae)
Fig. 9. Stage 19: Muscular response stage of H. vertebralis and D. auratus embryos. Micrographs of H. vertebralis embryos are shown in A, C, E, and micrographs of D. auratus embryos are shown in B, D, F. (A) Lateral view of an embryo. (B) Dorsal view of an embryo. The developing gills were visible. (C–D) Cross sections through the trunk. The dorsal fin was visible in C, and the pronephros in D. (E) Horizontal section at the level of the gut. (F) Horizontal section at the level of the brain and the gut. bn, brain; df, dorsal fin; fg, first gill pair; g, gut; gb, gill bud; hy, hyoid arch; ma, mandibular arch; n notochord; nt, neural tube; p, pronephros; s, somite.
FIG, 1. John William Daly (1933–2008) on the upper Río San Juan. This paper is dedicated to John Daly, our late friend and colleague, who helped collect three of the new species here described. In addition to his globally acclaimed discoveries in chemistry and pharmacology, John was an accomplished field herpetologist who contributed importantly to the systematics and natural history of dendrobatoid frogs (see Grant et al., 2006; Myers, 2009). This photograph shows John at age 37, with the upper Río San Juan behind him and branches overhead of a madroño tree (probably Garcinia magnifolia, syn. Rheedia chocoensis, Clusiaceae). When in South America, John was never far from a dendrobatid frog—this time, in the tree above his head, a tiny, undescribed semiarboreal species (also collected and later named "Dendrobates fuguritus" by our colleague Philip Silverstone). Other dendrobatids found nearby included Phyllobates aurotaenia (Boulenger, 1913), which was then being used for poisoning blowgun darts, and also the nontoxic species that we name Silverstoneia dalyi herein. (Photograph by C. W. Myers, 2 km above Playa de Oro, Chocó, February 16, 1971.) in Review of the Frog Genus Silverstoneia, with Descriptions of Five New Species from the Colombian Chocó (Dendrobatidae: Colostethinae)
FIG, 1. John William Daly (1933–2008) on the upper Río San Juan. This paper is dedicated to John Daly, our late friend and colleague, who helped collect three of the new species here described. In addition to his globally acclaimed discoveries in chemistry and pharmacology, John was an accomplished field herpetologist who contributed importantly to the systematics and natural history of dendrobatoid frogs (see Grant et al., 2006; Myers, 2009). This photograph shows John at age 37, with the upper Río San Juan behind him and branches overhead of a madroño tree (probably Garcinia magnifolia, syn. Rheedia chocoensis, Clusiaceae). When in South America, John was never far from a dendrobatid frog—this time, in the tree above his head, a tiny, undescribed semiarboreal species (also collected and later named "Dendrobates fuguritus" by our colleague Philip Silverstone). Other dendrobatids found nearby included Phyllobates aurotaenia (Boulenger, 1913), which was then being used for poisoning blowgun darts, and also the nontoxic species that we name Silverstoneia dalyi herein. (Photograph by C. W. Myers, 2 km above Playa de Oro, Chocó, February 16, 1971.)
Dendrobates auratus skin transcriptome
<p>A skin transcriptome from the Neotropical poison frog Dendrobates auratus. Data accompanies a forthcoming manuscript.</p>
Fig. 1 in Unpublished population data of Dendrobates azureus Hoogmoed 1969 obtained in 1968 and 1970, and its historical and current taxonomic status
Fig. 1. Dendrobates "azureus" (= tinctorius).
Fig. 2 in The Blue Dyeing Poison-Dart Frog, Dendrobates tinctorius (Dendrobates azureus, Hoogmoed 1969): extant in Suriname based on a rapid survey
Fig. 2. Dendrobates tinctorius from Sipaliwini savanna, Suriname.
FIGURE 3 in A new species of Dendrobates (Anura: Dendrobatidae) from the Amazonian lowlands in Perú
FIGURE 3. Call comparisons of closely related species. The data is listed as following: species (ambient temperature, location of individual, mean frequency). A. D. uakarii (26°C, Tahauyo, 3780 hz). B. D. ventrimaculatus sensu lato (24°C, Iquitos, 4900 hz) C. D. fantasticus (24°C, Iquitos, 3350 hz). D. D. reticulatus (29°C, Iquitos, 4130 hz).
FIGURE 4 in A new species of Dendrobates (Anura: Dendrobatidae) from the Amazonian lowlands in Perú
FIGURE 4. Character transformation for Dendrobates uakarii, sp. nov. diagnostic nucleotide site substitutions using ACCTRAN optimization. Alignment available online at http://www. dendrobates.org/permanent/duakarii.zip
FIGURE 2. A photographic illustration comparing D in A new species of Dendrobates (Anura: Dendrobatidae) from the Amazonian lowlands in Perú
FIGURE 2. A photographic illustration comparing D. uakarii, sp. nov. to similar species. D. uakarii, sp. nov. (holotype) from TamashiyacuTahauyo Communal Reserve (A. Dorsum B. Venter). Near Rio Yarapa, south of Rio Tahuayo, populations have thinner dorsolateral and vertebral lines with brighter red stripes (C. photo: Devon Graham). D. D. duellmani, Yasuni, Ecuador (photo: Petra Bartelds). E. D. ventrimaculatus sp. aff. Solimoes, Amazonas, Brazil (photo: Janalee P. Caldwell). F. D. ventrimaculatus sensu lato, TamashiyacuTahauyo Communal Reserve, Peru. G. D. reticulatus, Iquitos, Peru (photo: Evan Twomey).
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