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19 results for “Pristurus”
Figure 1 in Phylogenetic relationships among populations of Pristurus rupestris Blanford, 1874 (Sauria: Sphaerodactylidae) in southern Iran
Figure 1. Map of southern Iran and coastal regions of Persian Gulf showing localities of samples used in this study. 1- Busheher; 2- Dayyer; 3- Siraf; 4- Nayband; 5- Charak; 6- Gheshm; 7- Bandar Abas; 8- Minab; 9- Jask; 10- Konarak; 11- Guater.
Evolution along allometric lines of least resistance: Morphological differentiation in Pristurus geckos
<p class="FirstParagraph"><span>Species living in distinct habitats often experience unique ecological selective pressures, which can drive phenotypic divergence. However, how ecophenotypic patterns are affected by allometric trends and trait integration levels is less well understood. Here we evaluate the role of allometry in shaping body size and body form diversity in <em>Pristurus</em> geckos utilizing differing habitats. We found that patterns of allometry and integration in body form were distinct in species with different habitat preferences, with ground-dwelling <em>Pristurus</em> displaying the most divergent allometric trend and high levels of integration. There was also strong concordance between intraspecific allometry across individuals and evolutionary allometry among species, revealing that differences in body form among individuals were predictive of evolutionary changes across the phylogeny at macroevolutionary scales. This suggested that phenotypic evolution occurred along allometric lines of least resistance, with allometric trajectories imposing a strong influence on the magnitude and direction of size and shape changes across the phylogeny. When viewed in phylomorphospace, the largest rock-dwelling species were most similar to the smallest ground-dwelling species, and vice versa. Thus, in <em>Pristurus</em>, phenotypic evolution along the differing habitat-based allometric trajectories resulted in similar body forms at differing body sizes in distinct ecological habitats.</span></p>
Evolution along allometric lines of least resistance: Morphological differentiation in Pristurus geckos
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FIGURE 5 in A new species of Semaphore gecko Pristurus (Squamata: Gekkonidae) from Mauretania, represents a 4700 km range extension for genus
FIGURE 5. Habitats of Pristurus adrarensis n. sp. a. Type locality: Eastern part of the Zerga mountains, ca 34 km WSW of Chinguetti, Adrar Atar, central Mauritania. b. Locality of second paratype: 44km from Chinguetti on the road to Adrar, 19km before the Nouatil Pass, Adrar Atar Region, Mauretania. (Photographs by Ph. Geniez).
FIGURE 1 in A new species of Semaphore gecko Pristurus (Squamata: Gekkonidae) from Mauretania, represents a 4700 km range extension for genus
FIGURE 1. Geographical distribution of the genus Pristurus. The star indicates the only known area where Pristurus adrarensis n. sp. has been found to date.
FIGURE 2 in A new species of Semaphore gecko Pristurus (Squamata: Gekkonidae) from Mauretania, represents a 4700 km range extension for genus
FIGURE 2. General views of type series of Pristurus adrarensis n. sp. in life. a. Holotype; Eastern part of the Zerga mountains, about 34 km WSW of Chinguetti, Adrar Atar, central Mauritania. b. First paratype; same locality. c. Second paratype; 44km from Chinguetti on the road to Adrar, 19km before the Nouatil Pass, Adrar Atar Region, Mauretania. Photographs by Ph. Geniez.
FIGURE 4 in A new species of Semaphore gecko Pristurus (Squamata: Gekkonidae) from Mauretania, represents a 4700 km range extension for genus
FIGURE 4. Ventral views of Pristurus adrarensis n. sp. in life. a. Holotype; Eastern part of the Zerga mountains, ca 34 km WSW of Chinguetti, Adrar Atar, central Mauritania. b. Second paratype; 44km from Chinguetti on the road to Adrar, 19km before the Nouatil Pass, Adrar Atar Region, Mauretania. (Photographs by Ph. Geniez)
FIGURE 3 in A new species of Semaphore gecko Pristurus (Squamata: Gekkonidae) from Mauretania, represents a 4700 km range extension for genus
FIGURE 3. Heads of of type series of Pristurus adrarensis in life. a. Holotype; Eastern part of the Zerga mountains, ca 34 km WSW of Chinguetti, Adrar Atar, central Mauritania. b. First paratype; same locality. c. Second paratype; 44km from Chinguetti on the road to Adrar, 19km before the Nouatil Pass, Adrar Atar Region, Mauretania. (Photographs by Ph. Geniez)
FIGURE 3 in Morphological differentiation of the complex Pristurus sokotranus (Squamata: Sphaerodactylidae) from Socotra (Yemen)
FIGURE 3. Differences in snout-vent length (SVL), number of ventral spots (VS#), head degree (H°), and head length (HL) among lineages and sexes (males, red circles; and females, blue squares). Symbols indicate average values and vertical bars standard errors. Results for the other variables are presented in Appendices.
FIGURE 1 in Morphological differentiation of the complex Pristurus sokotranus (Squamata: Sphaerodactylidae) from Socotra (Yemen)
FIGURE 1. Map showing the geographic location of the Socotra Archipelago, the barcoded individuals, and the individuals used for the morphological study of the different lineages (PRso1, PRso2, and PRso3).
FIGURE 4 in Morphological differentiation of the complex Pristurus sokotranus (Squamata: Sphaerodactylidae) from Socotra (Yemen)
FIGURE 4. Scatterplot of Canonical scores for morphological variables of Pristurus sokotranus males (top plots) and females (bottom plots) of the three lineages. On the left only barcoded individuals (N=22 males and 32 females), and on the right all individuals (N=42 males and 49 females).
FIGURE 5 in Relationships, evolution and biogeography of Semaphore geckos, Pristurus (Squamata, Sphaerodactylidae) based on morphology
FIGURE 5. Phylogeny of Pristurus showing groups of species referred to in text and their broad distributions. Capital letters indicate branches where the changes in ecology, behaviour and morphology mentioned in Table 1 and in the text are likely to have taken place. The phylogeny is conservative; if P. gallagheri and P. flavipunctatus are closely related, changes at O and P could have occurred in their common ancestor.
FIGURE 3 in Relationships, evolution and biogeography of Semaphore geckos, Pristurus (Squamata, Sphaerodactylidae) based on morphology
FIGURE 3. Apparent relationships of the main taxa of Sphaerodactylidae based on 19 morphological characters equivalent to 21 binary ones. The tree shown is a strict consensus of three produced by parsimony analysis; figures indicate bootstrap support for nodes based on 1000 replicates. Derived states that characterize apparent clades are as follows (character numbers are given in parentheses. A. Loss of cloacal tubercles (8), loss of cloacal sacs and bones (9, 10), clutch size reduced to a single egg (16). B. Small body size (1), voice reduced (19), active in subdued light (17-1). C. Pupil rounded but often higher than wide (6.1), sexual dichromatism often present (11), 'escutcheon' often present (13), active in bright light (17-2), voice reduced (19). D. Nasal bones relatively short (2), pupil round (6-2), characteristic dorsal pattern (12), 'escutcheon' dark (14), tail often raised as intraspecific signal (18).
FIGURE 2 in Relationships, evolution and biogeography of Semaphore geckos, Pristurus (Squamata, Sphaerodactylidae) based on morphology
FIGURE 2. Representative species of Pristurus. a. P. celerrimus of north Oman, morphologically the most primitive member of the genus. b. P. rupestris from north Oman, a member of the widespread P. flavipunctatus assemblage. c. P. minimus, south Oman, a member of the Spatalura clade. d. P. carteri from south Oman, a member of the P. carteri group in the Spatalura clade. Photographs a–c taken by David Donaire.
FIGURE 1. A in Pristurus guweirensis Haas, 1943 (Gekkota: Sphaerodactylidae): the most abundant and widely distributed species of Pristurus previously referred to as Pristurus sp. 1
FIGURE 1. A) Dorsal view, gular region and tail section of Pristurus rupestris, P. guweirensis stat. nov. and P. migiurtinicus (MSNM Re97) females, respectively. As can be seen from all the photographs deposited in MorphoBank (Supp. Table 1), the dorsal pattern in P. guweirensis stat. nov. and P. rupestris is quite variable. B) Distribution range of P. rupestris (blue), P. guweirensis stat. nov. (green), and P. migiurtinicus (red; known only from a single locality). Stars show the type locality for each species. The question mark shows the locality of an unconfirmed P. flavipunctatus species complex specimen (assigned to "P. rupestris" by Scortecci, 1935).
FIGURE 2 in Morphological differentiation of the complex Pristurus sokotranus (Squamata: Sphaerodactylidae) from Socotra (Yemen)
FIGURE 2. Ventral and dorsal view of a typical individual of each lineage of Pristurus sokotranus.
Figure 2 in Phylogenetic relationships among populations of Pristurus rupestris Blanford, 1874 (Sauria: Sphaerodactylidae) in southern Iran
Figure 2. Phylogenetic relationships among the Pristurus rupestris populations included in the analysis using BI. Individuals of Tenuidactylus caspius were used as the outgroup taxon. Numbers close to the branches are posterior probabilities of BI followed by MP and ML bootstrap supports (2000 replicates). Numbers in front of the tree refer to the sample localities as follows: 1- Busheher; 2- Dayyer; 3- Siraf; 4- Nayband; 5- Charak; 6- Gheshm; 7- Bandar Abas; 8- Minab; 9- Jask; 10- Konarak; 11- Guater. Four clades are shown by numbers.
FIGURE 1 in Relationships, evolution and biogeography of Semaphore geckos, Pristurus (Squamata, Sphaerodactylidae) based on morphology
FIGURE 1. Distribution of Pristurus. The Socotra archipelago is indicated by arrows off the Horn of Africa, and consists, from east to west, of Socotra itself, Samhan and Darsa, and Abd al Kuri. The isolated range of Pristurus adrarensis in Mauretania is indicated by a star.
FIGURE 4 in Relationships, evolution and biogeography of Semaphore geckos, Pristurus (Squamata, Sphaerodactylidae) based on morphology
FIGURE 4. Apparent relationships of 20 species of Pristurus based on 72 morphological characters equivalent to 86 binary ones. The tree shown is a strict consensus of 32 produced by parsimony analysis; figures indicate bootstrap support for nodes based on 1000 replicates.
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