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126 results for “Trimeresurus”
Fig. 3A. MZB.Ophi.5452 in On Trimeresurus sumatranus (Raffles, 1822), with the designation of a neotype and the description of a new species of pitviper from Sumatra (Squamata: Viperidae: Crotalinae)
Fig. 3A. MZB.Ophi.5452 live holotype of Trimeresurus gunaleni spec. nov. from Mt. Sibayak, ca. 1,800 m a.s.l., west of Brastagi, Sumatera Utara Province, Sumatra, adult female. Photo: G. Vogel.
Fig. 10 in On Trimeresurus sumatranus (Raffles, 1822), with the designation of a neotype and the description of a new species of pitviper from Sumatra (Squamata: Viperidae: Crotalinae)
Fig. 10. Live female of Trimeresurus malcolmi from Mount Kinabalu, Sabah, Borneo. Photo: M. Dehling.
Supplementary information for: The artefactual branch effect and phylogenetic conflict: Species delimitation with gene flow in mangrove pit vipers (Trimeresurus purpureomaculatus-erythrurus complex)
<p>Mangrove pit vipers of the <em>Trimeresurus</em> <em>purpureomaculatus</em>-<em>erythrurus</em> complex are the only species of viper known to naturally inhabit mangroves. Despite serving integral ecological functions in mangrove ecosystems, the evolutionary history, distribution, and species boundaries of mangrove pit vipers remain poorly understood, partly due to overlapping distributions, confusing phenotypic variations, and the lack of focused studies. Here, we present the first genomic study on mangrove pit vipers and introduce a robust hypothesis-driven species delimitation framework that considers gene flow and phylogenetic uncertainty in conjunction with a novel application of a new class of speciation-based delimitation model implemented through the program Delineate. Our results showed that gene flow produced phylogenetic conflict in our focal species and substantiated the artefactual branch effect where highly admixed populations appear as divergent nonmonophyletic lineages arranged in a stepwise manner at the basal position of clades. Despite the confounding effects of gene flow, we were able to obtain unequivocal support for the recognition of a new species based on the intersection and congruence of multiple lines of evidence. This study demonstrates that an integrative hypothesis-driven approach predicated on the consideration of multiple plausible evolutionary histories, population structure/ differentiation, gene flow, and the implementation of a speciation-based delimitation model can effectively delimit species in the presence of gene flow and phylogenetic conflict.</p>
Fig. 5 in On Trimeresurus Fasciatus (Boulenger, 1896) (Serpentes: Crotalidae), With A Discussion On Its Relationships Based On Morphological And Molecular Data
Fig. 5. Strict consensus MP tree. Values above branches are boostrap proportions (1000 replicates).
Fig. 3 in On Trimeresurus Fasciatus (Boulenger, 1896) (Serpentes: Crotalidae), With A Discussion On Its Relationships Based On Morphological And Molecular Data
Fig. 3. Trimeresurus fasciatus, adult female in life. Photograph by Gernot Vogel.
Fig. 2 in On Trimeresurus Fasciatus (Boulenger, 1896) (Serpentes: Crotalidae), With A Discussion On Its Relationships Based On Morphological And Molecular Data
Fig. 2. Trimeresurus fasciatus, adult male in life. Photograph by Gernot Vogel.
Fig. 4 in On Trimeresurus Fasciatus (Boulenger, 1896) (Serpentes: Crotalidae), With A Discussion On Its Relationships Based On Morphological And Molecular Data
Fig. 4. Trimeresurus fasciatus, juvenile in life. Photograph by Gernot Vogel.
Fig. 1 in A new species of green pit viper of the genus Trimeresurus Lacépède, 1804 (Reptilia: Serpentes: Viperidae) from the Nicobar Archipelago, Indian Ocean
Fig. 1. Holotype (BNHS 3304) of Trimeresurus davidi sp. nov. Photo by Rahul Khot.
Fig. 13. MZB.Ophi.5452 in On Trimeresurus sumatranus (Raffles, 1822), with the designation of a neotype and the description of a new species of pitviper from Sumatra (Squamata: Viperidae: Crotalinae)
Fig. 13. MZB.Ophi.5452 holotype of Trimeresurus gunaleni spec. nov., adult female. Photo: N. Maury.
Fig. 15 in On Trimeresurus sumatranus (Raffles, 1822), with the designation of a neotype and the description of a new species of pitviper from Sumatra (Squamata: Viperidae: Crotalinae)
Fig. 15. Habitat of Trimeresurus gunaleni spec. nov. Photo: D. Gunalen.
Fig. 9 in On Trimeresurus sumatranus (Raffles, 1822), with the designation of a neotype and the description of a new species of pitviper from Sumatra (Squamata: Viperidae: Crotalinae)
Fig. 9. Live female of Trimeresurus sumatranus from Bengkulu Province, Sumatra. Photo: G. Vogel.
Fig. 14 in On Trimeresurus sumatranus (Raffles, 1822), with the designation of a neotype and the description of a new species of pitviper from Sumatra (Squamata: Viperidae: Crotalinae)
Fig. 14. Live female of Trimeresurus sumatranus from Bengkulu Province, Sumatra. Photo: N. Maury.
Fig. 16 in On Trimeresurus sumatranus (Raffles, 1822), with the designation of a neotype and the description of a new species of pitviper from Sumatra (Squamata: Viperidae: Crotalinae)
Fig. 16. Habitat of Trimeresurus gunaleni spec. nov. Photo: D. Gunalen.
Supplementary information for: The artefactual branch effect and phylogenetic conflict: Species delimitation with gene flow in mangrove pit vipers (Trimeresurus purpureomaculatus-erythrurus complex)
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FIGURE 3 in A new pit viper of the genus Trimeresurus (Lacépède, 1804) (Squamata: Viperidae) from Southwest China
FIGURE 3. Fresh specimens of Trimeresurus caudornatus sp. nov.: A & B. Dorsal and ventral views of the holotype (male, ZMNH AR1238); C & D. Dorsal and ventral views of the paratype (female, ZMNH AR1239). Scale bar: 2 cm. Photos: S. Shi.
FIGURE 2 in A new pit viper of the genus Trimeresurus (Lacépède, 1804) (Squamata: Viperidae) from Southwest China
FIGURE 2. Trimeresurus caudornatus sp. nov. in life: A. The holotype (male, ZMNH AR1238) and B. The paratype (female, ZMNH AR1239). Photos: L. Ding.
FIGURE 1 in A new pit viper of the genus Trimeresurus (Lacépède, 1804) (Squamata: Viperidae) from Southwest China
FIGURE 1. The Bayesian Inference (BI) and Maximum likelihood analysis (ML) tree of the genus Trimeresurus based on Cyt b, ND4, 12S and 16S. The major ML/BI bootstrap and posterior probability values were presented (the ones lower than 50% denoted as "-").
FIGURE 4 in A new pit viper of the genus Trimeresurus (Lacépède, 1804) (Squamata: Viperidae) from Southwest China
FIGURE 4. Trimeresurus caudornatus sp. nov.: The head of the holotype (ZMNH AR1238) A. Dorsal view; B. ventral view; C. Lateral view; the tail of the holotype: D. Dorsal view, E. Ventral view; and F. hemipenes of the holotype. Scale bar: 5 mm. Photos: S. Shi.
FIGURE 4. Trimeresurus mutabilis Stoliczka, 1870 in On the systematics of Trimeresurus labialis Fitzinger in Steindachner, 1867, a pitviper from the Nicobar Islands (India), with revalidation of Trimeresurus mutabilis Stoliczka, 1870 (Squamata, Viperidae, Crotalinae)
FIGURE 4. Trimeresurus mutabilis Stoliczka, 1870 from Chowra Island, Central Nicobars. Photograph by Manish Chandi.
FIGURE 3. Trimeresurus mutabilis Stoliczka, 1870 in On the systematics of Trimeresurus labialis Fitzinger in Steindachner, 1867, a pitviper from the Nicobar Islands (India), with revalidation of Trimeresurus mutabilis Stoliczka, 1870 (Squamata, Viperidae, Crotalinae)
FIGURE 3. Trimeresurus mutabilis Stoliczka, 1870 from Chowra Island, Central Nicobars. Photograph by Manish Chandi.
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