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6 results for “Oxystele”
Figure S1 from: Yessoufou K, Van Der Bank H, Herbert D, Greenfield R (2013) Revisiting species delimitation within the genus Oxystele using DNA barcoding approach. ZooKeys 365: 337-354. https://doi.org/10.3897/zookeys.365.5356
Figure S1 - The only parsimonious tree obtained from the maximum parsimony (MP) analysis. Topology of species groupings is similar to that of the Bayesian tree (see Figure 3). Node supports are reported on the branches; the first value is bootstrap support from MP analysis; the second value in bracket indicates the posterior probability obtained from Bayesian analysis; only moderate to high node support values are indicated; Jujubinus exasperatus is used as outgroup; A-E indicates different possible species-units in the dataset: A (Oxystele tabularis), B (Oxystele variegata), C (Oxystele impervia), D (Oxystele sinensis), E (Oxystele tigrina), as in Figure 3.
Figure S2 from: Yessoufou K, Van Der Bank H, Herbert D, Greenfield R (2013) Revisiting species delimitation within the genus Oxystele using DNA barcoding approach. ZooKeys 365: 337-354. https://doi.org/10.3897/zookeys.365.5356
Figure S2 - Bayesian tree assembled using MrBayes indicating the groupings of specimens and the posterior probability of the nodes.
Figure 4 from: Yessoufou K, Van Der Bank H, Herbert D, Greenfield R (2013) Revisiting species delimitation within the genus Oxystele using DNA barcoding approach. ZooKeys 365: 337-354. https://doi.org/10.3897/zookeys.365.5356
Figure 4 - Patterns of shell colour within the genus Oxystele. A–C Oxystele variegata from Namibia, 5 km north of Swakopmund, diameter 22.2 mm (NMSA E6038) D–F Oxystele impervia from the Western Cape, Groen Rivier, diameter 22.3 mm (NMSA E7353) G–I Oxystele sp. from theEastern Cape, Tsitsikamma National Park, diameter 16.5 mm (HVDBM058-10, NMSA W7371); the colour pattern of these specimens suggests Oxystele variegata, but these specimens group within the unit of Oxystele impervia J–L Oxystele sp. from the Northern Cape, Noup, diameter 18.0 mm (HVDBM185-10, NMSA W7608); the colour pattern suggests Oxystele impervia, but they group with Oxystele variegata (see Figure 4 and Appendix 2 for the phylogenetic groupings of these specimens and node supports; these groupings contradict their morphological identification).
Figure 3 from: Yessoufou K, Van Der Bank H, Herbert D, Greenfield R (2013) Revisiting species delimitation within the genus Oxystele using DNA barcoding approach. ZooKeys 365: 337-354. https://doi.org/10.3897/zookeys.365.5356
Figure 3 - Summary of both Bayesian and parsimonious trees. Values above branches indicate bootstrap supports; values under branches indicate posterior probability. All distinguished species are indicated at the tip of the tree. Branches without values indicate non-supported nodes; the small circle indicates a specimen of Oxystele impervia (HVDBM028-10) that was misidentified based on morphology; large circle indicates four specimens morphologically indistinguishable from Oxystele variegata (HVDBM070-10; DQ061092; HVDBM058-10; HVDBM059-10), but that are, based on both barcoding analysis of species delimitation (see Table 1) and phylogenetic tree analysis identified as Oxystele impervia (see also Appendices 1 and 2).
Figure 2 from: Yessoufou K, Van Der Bank H, Herbert D, Greenfield R (2013) Revisiting species delimitation within the genus Oxystele using DNA barcoding approach. ZooKeys 365: 337-354. https://doi.org/10.3897/zookeys.365.5356
Figure 2 - Determination of the threshold genetic distance for species identification. The density plot indicates transition between intra- and interspecific distances; the genetic distance corresponding to this transition (dip in the density graph, here approximately 0.05) indicates the suitable threshold to the dataset. This method does not require prior knowledge of species identity to get an indication of potential threshold values.
Figure 1 from: Yessoufou K, Van Der Bank H, Herbert D, Greenfield R (2013) Revisiting species delimitation within the genus Oxystele using DNA barcoding approach. ZooKeys 365: 337-354. https://doi.org/10.3897/zookeys.365.5356
Figure 1 - Evaluation of barcode gap in the dataset. A Boxplot of the interspecific (inter) and intraspecific genetic (intra) distances, indicating the existence of a barcode gap i.e. intraspecific distance is longer than intraspecific distance. The bottom and top of the boxes show the first and third quartiles respectively, the median is indicated by the horizontal line, the range of the data by the vertical dashed line and outliers (points outside 1.5 times the interquartile range) by Bold vertical lines B Lineplot of the barcode gap for the 56 Oxsystele specimens. For each specimen in the dataset, the grey lines indicate where the smallest interspecific distance (top of line value) is longer than the longest intraspecific distance (bottom of line value), therefore indicating existence of barcode gap; the red lines show where this pattern is reversed, and the closest non-conspecific is closer to the query than its nearest conspecific, i.e., the situation where there is no barcoding gap.
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