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89 results for “Pantepui”
Fig. 11. A in Two new charismatic Pristimantis species (Anura: Craugastoridae) from the tepuis of "The Lost World" (Pantepui region, South America)
Fig. 11. A. Ptari-tepui, photographed from the surrounding savannah looking to the NE (21 Jun. 2012). B. Summit of Ptari-tepui (21 Jun. 2012). Photographs by the author.
Fig. 8 in Two new charismatic Pristimantis species (Anura: Craugastoridae) from the tepuis of "The Lost World" (Pantepui region, South America)
Fig. 8. Pristimantis imthurni sp. nov. in life. A. Dorsolateral view of the ♂ holotype (IRSNB 4165). B. Ventral view of the same specimen. Photographs by the author.
Fig. 5 in Two new charismatic Pristimantis species (Anura: Craugastoridae) from the tepuis of "The Lost World" (Pantepui region, South America)
Fig. 5. Pristimantis jamescameroni sp. nov. Juvenile specimen (IRSNB 4164, 18.3 mm SVL). Photograph by the author.
Fig. 2 in Two new charismatic Pristimantis species (Anura: Craugastoridae) from the tepuis of "The Lost World" (Pantepui region, South America)
Fig. 2. Pristimantis jamescameroni sp. nov. Intraspecific variation in dorsal and ventral colour pattern in living specimens. A. Dorsolateral view of the ♂ holotype (IRSNB 4160). B. Ventral view of the same specimen. C. Dorsolateral view of a ♀ paratype (IRSNB 4163). D. Ventral view of the same specimen. E. Dorsolateral view of a ♀ paratype (IRSNB 4162). F. Ventral view of the same specimen. Photographs by the author.
Fig. 9 in Two new charismatic Pristimantis species (Anura: Craugastoridae) from the tepuis of "The Lost World" (Pantepui region, South America)
Fig. 9. Pristimantis imthurni sp. nov. Ventral view of left hand and left foot of the ♂ holotype (IRSNB 4165). Photographs by the author.
Fig. 10 in Two new charismatic Pristimantis species (Anura: Craugastoridae) from the tepuis of "The Lost World" (Pantepui region, South America)
Fig. 10. Pristimantis imthurni sp. nov. in preservative. A. Dorsol view of the ♂ holotype (IRSNB 4165). B. Ventral view of the same specimen. Photographs by the author.
Fig. 1. A in Two new charismatic Pristimantis species (Anura: Craugastoridae) from the tepuis of "The Lost World" (Pantepui region, South America)
Fig. 1. A. Map of the Pantepui region, located in the western part of the Guiana Shield. The white rectangle corresponds to the area enlarged in (B). B. Distribution of known tepui summit Pristimantis species occurring east of the Rio Caroní in Venezuela and in western Guyana: P. aureoventris (Wei- Assipu-tepui and upper slopes of Mount Roraima), P. yuruaniensis (Yuruaní-tepui), P. muchimuk (Churí-tepui), P. abakapa (Abakapá-tepui), P. auricarens and P. pulvinatus (Auyán-tepui); (1) Apradatepui, type locality of Pristimantis jamescameroni sp. nov. (area enlarged in Fig. 6A); (2) Ptari-tepui, type locality of Pristimantis imthurni sp. nov. (area enlarged in Fig. 6B).
Fig. 4 in Two new charismatic Pristimantis species (Anura: Craugastoridae) from the tepuis of "The Lost World" (Pantepui region, South America)
Fig. 4. Pristimantis jamescameroni sp. nov. Intraspecific variation in dorsal (above) and ventral (below) colour pattern in preserved specimens. A, E. ♀ paratype (IRSNB 4161). B, F. ♀ paratype (IRSNB 4162). C, G. ♀ paratype (IRSNB 4163). D, H. ♂ holotype (IRSNB 4160). Photographs by the author.
Fig. 3 in Two new charismatic Pristimantis species (Anura: Craugastoridae) from the tepuis of "The Lost World" (Pantepui region, South America)
Fig. 3. Pristimantis jamescameroni sp. nov. Ventral view of left hand and left foot of the ♂ holotype (IRSNB 4160). Photographs by the author.
Fig. 6. A in Two new charismatic Pristimantis species (Anura: Craugastoridae) from the tepuis of "The Lost World" (Pantepui region, South America)
Fig. 6. A. Satellite map of the Aprada massif, showing the location of Aprada-tepui and neighbouring smaller table mountains. Yellow star indicates the type locality of Pristimantis jamescameroni. B. Satellite map of the Ptari massif, showing the location of Ptari-tepui and neighbouring mountains. Yellow star indicates the type locality of Pristimantis imthurni. Satellite maps © Google Maps.
Fig. 7. A in Two new charismatic Pristimantis species (Anura: Craugastoridae) from the tepuis of "The Lost World" (Pantepui region, South America)
Fig. 7. A. The summit of Aprada-tepui lying above the clouds, photographed from a helicopter looking to the SW (2 May 2011). B. Summit of Aprada-tepui (15 Jun. 2012). Photographs by the author.
FIG. 4 in A New Species of Marmosops (Marsupialia: Didelphidae) from the Pakaraima Highlands of Guyana, with Remarks on the Origin of the Endemic Pantepui Mammal Fauna
FIG. 4. Dorsal views of skulls. Left to right: Marmosops pakaraimae (ROM 115129, holotype), M. parvidens (AMNH 267359), and M. pinheiroi (AMNH 267345). All views about ×3.
FIG. 3 in A New Species of Marmosops (Marsupialia: Didelphidae) from the Pakaraima Highlands of Guyana, with Remarks on the Origin of the Endemic Pantepui Mammal Fauna
FIG. 3. Ventral views of skins. Left to right: Marmosops pakaraimae (ROM 115129, holotype), M. parvidens (ROM 114144), M. pinheiroi (ROM 111558). Approximately life size.
FIG. 7 in A New Species of Marmosops (Marsupialia: Didelphidae) from the Pakaraima Highlands of Guyana, with Remarks on the Origin of the Endemic Pantepui Mammal Fauna
FIG. 7. Forest vegetation at three Guyanese capture sites of Marmosops pakaraimae. Top, Mount Roraima, Third Camp (1000 m); bottom left, Mount Roraima, Second Camp (800 m); bottom right, Mount Ayanganna, First Plateau Camp (1100 m). Photos by Francis X. Faigal (Royal Ontario Museum).
FIG. 2 in A New Species of Marmosops (Marsupialia: Didelphidae) from the Pakaraima Highlands of Guyana, with Remarks on the Origin of the Endemic Pantepui Mammal Fauna
FIG. 2. Dorsal views of skins. Left to right: Marmosops pakaraimae (ROM 115129, holotype), M. parvidens (ROM 114144), M. pinheiroi (ROM 111558). Approximately life size.
FIG. 8 in A New Species of Marmosops (Marsupialia: Didelphidae) from the Pakaraima Highlands of Guyana, with Remarks on the Origin of the Endemic Pantepui Mammal Fauna
FIG. 8. Bayesian phylogeny of ingroup terminals (maximum-likelihood and parsimony analyses resulted in congruent topologies). Pie diagrams at internal nodes represent support from BI, ML, and MP analyses, with filled wedges corresponding to high support (posterior probabilities ≥ 0.95, bootstrap ≥ 0.75%). Each terminal is identified by country of origin and an alphanumeric specimen identifier (from tables 2 or 3). Numbers in parentheses refer to localities mapped in figure 1 and listed in the gazetteer (appendix).
FIG. 1 in A New Species of Marmosops (Marsupialia: Didelphidae) from the Pakaraima Highlands of Guyana, with Remarks on the Origin of the Endemic Pantepui Mammal Fauna
FIG. 1. Collecting localities of examined specimens of Marmosops pakaraimae, M. parvidens, and M. pinheiroi. Numbers are keyed to entries in the gazetteer (appendix).
FIG. 5 in A New Species of Marmosops (Marsupialia: Didelphidae) from the Pakaraima Highlands of Guyana, with Remarks on the Origin of the Endemic Pantepui Mammal Fauna
FIG. 5. Ventral views of skulls. Left to right: Marmosops pakaraimae (ROM 115129, holotype), M. parvidens (AMNH 267359), and M. pinheiroi (AMNH 267345). All views about ×3.
Phylogeography of the tepui brush finch, Atlapetes personatus (Passeriformes: Passerellidae): Extensive differentiation on the sky islands of the Venezuelan Pantepui
<p>The biogeography and genetic structure of species endemic to the high elevation sky islands (tepuis) of the Guiana Shield in eastern and southern Venezuela and adjacent areas of Brazil and Guyana are poorly known. We investigated the phylogeography and population structure of the tepui brush finch (<em>Atlapetes personatus</em>) as an exemplar of that biota. Mitochondrial DNA sequences revealed three monophyletic clades that correspond to major morphological subspecies groups occurring in eastern, southern, and northwestern regions of the Pantepui. Differentiation among the clades accounted for 95% of the total genetic variance. DNA sequences from three nuclear loci also showed marked divergence among those three regions. Estimates of gene flow between regions and sampled populations were all less than one individual per generation. Consequently, these subspecies groups ought to be recognized as species-level taxa. The results suggest there is more large-scale biogeographic structure within the Pantepui region than generally recognized. Additionally, within two of the three regions, genetic variance among tepuis was substantial at both mitochondrial and nuclear loci. Many of the sampled populations appear to be genetically independent units that are nearly cryptic morphologically. The sampled tepuis may be islands of habitat for this taxon and for conservation purposes.</p>
Phylogeography of the tepui brush finch, Atlapetes personatus (Passeriformes: Passerellidae): Extensive differentiation on the sky islands of the Venezuelan Pantepui
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