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23 results for “Xenosaurus”
Linked collectors and determiners for: Sistemática y biogeografía del género Xenosaurus (Squamata: xenosauridae).
Natural history specimen data linked to collectors and determiners held within, "Sistemática y biogeografía del género Xenosaurus (Squamata: xenosauridae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/9f472ac4-5d5a-4767-89e2-cbe02d7cfe2e">https://bionomia.net/dataset/9f472ac4-5d5a-4767-89e2-cbe02d7cfe2e</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/9f472ac4-5d5a-4767-89e2-cbe02d7cfe2e">https://gbif.org/dataset/9f472ac4-5d5a-4767-89e2-cbe02d7cfe2e</a>. Formatted as a Frictionless Data package.
Individual growth of the Flathead Knobscaled Lizard, Xenosaurus platyceps, from tropical and temperate populations
<p><span>Growth rates of ectotherms are frequently affected by environmental conditions, such as temperature, precipitation, and prey availability. However, local adaptation to environmental conditions could influence geographic variation in growth rates. We studied growth rates of the Flathead Knob-scaled Lizard, <em>Xenosaurus platyceps</em>, from a tropical population and a temperate population in Tamaulipas, Mexico. We used a field study and a common garden experiment to examine the extent and potential causes of variation in individual growth rates between these two populations from contrasting environments. Field-determined growth rates in the tropical population were greater than those in the temperate population. In a laboratory common garden experiment that manipulated food availability and temperature for neonates from each population, neonates from the tropical population grew faster than those from the temperate population. Neonates kept at higher temperatures grew faster than those kept at lower temperature. In addition, growth rates of neonates from temperate and tropical populations did not differ at low temperature, but neonates from the tropical population grew faster at the higher temperature than did the neonates from the temperate population. Food treatment did not affect individual growth rates in these lizards, although there was a trend for neonates grown with higher food availability to grow faster. Our results suggest that not only does the warm environment of the tropical population contribute to the observed differences in field growth rates, but there is a genetic difference in the ability of the tropical population to take advantage of the warmer temperatures to increase growth rates.</span></p>
Individual growth of the Flathead Knobscaled Lizard, Xenosaurus platyceps, from tropical and temperate populations
Open the record for dataset details and reuse information.
FIGURES 1–8. Spauligodon n in New species of Spauligodon (Nematoda: Pharyngodonidae) in Xenosaurus platyceps (Squamata: Xenosauridae) from Mexico
FIGURES 1–8. Spauligodon n. sp. (1) Female, non-gravid, anterior end, lateral view. (2) Female, en face view. (3) Spicule. (4) Eggs, pronucleus stage. (5) Male, posterior end, semidiagrammatic lateral view, spines exaggerated. (6). Female, non-gravid, posterior end, lateral view, spines exaggerated. (7). Male, entire, ventral view. (8). Male, posterior end, semidiagrammatic ventral view.
Supplementary material 2 from: Nieto-Montes de Oca A, Sánchez-Vega H, Durán-Fuentes I (2018) A new species of knob-scaled lizard (Xenosauridae, Xenosaurus) from the Sierra Madre Oriental of Puebla, Mexico. ZooKeys 737: 141-160. https://doi.org/10.3897/zookeys.737.15095
Variation in selected characters in the genus Xenosaurus : Explanation note: Xenosaurus clades after Nieto-Montes de Oca et al. (2017).
Figure 11 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus
Figure 11. Mandibular elements of Exostinus serratus. A, left dentary and postdentary elements, AMNH 7726 (anterior to the left). B, partial left dentary, USNM v16565, lateral (anterior to the left). C, partial left dentary, USNM v16565, medial (anterior to the right). D, partial right dentary, AMNH 1608, lateral (anterior to the right). E, partial right dentary, AMNH 1608, medial (anterior to the left). Abbreviations: CO, coronoid; Daf, alveolar foramen; Das, alveolar sulcus; Dcof, coronoid facet; Dcr, 'chin' region; Ddg, dental gutter; Ddmiaf, dorsal margin of inferior alveolar foramen; Ddp, dental parapet; Dea, excavation for angular; Dgha, geniohyoideus attachment area; Diml, infra-Meckelian lip; Dims, intramandibular septum; Dmg, Meckelian groove; Dpomc, posterior opening of mandibular canal; Drp, resorption pit; Dsims, step in intramandibular septum; Dsml, supra-Meckelian lip; Dwse, wedge-shaped eminence.
Figure 3 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus
Figure 3. Premaxilla of Exostinus serratus, USNM v16565. A, left lateral view (anterior to the left). B, dorsal view (anterior to the left). C, ventral view (anterior to the left). Abbreviations: PMar, ascending ridge; PMds, dentigerous strip; PMdg, dental gutter; PMfip, footplate of incisive process; PMfvs, flattened portion of ventral surface; PMlmxf, lateral maxillary facet; PMmk, median keel; PMro, rostral osteoderm; PMtvp, table atop vomerine process; PMvp, vomerine process.
Figure 2 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus
Figure 2. Premaxilla of Exostinus serratus, USNM v16565. A, anterior view. B, posterior view. Abbreviations: PMaf, alveolar foramen; PMar, ascending ridge; PMaw, apical wedge; PMcp, connecting portion; PMds, dentigerous strip; PMip, incisive process; PMlmxf, lateral maxillary facet; PMmk, median keel; PMmmxf, medial maxillary facet; PMnaf, nasal facet; PMnp, nasal process; PMpf, posterior foramen; PMro, rostral osteoderm; PMsf, septal fossa; PMsw, supranarial wing; PMtvp, table atop vomerine process; PMvof, vomerine facet; PMvp, vomerine process.
Figure 1 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus
Figure 1. Snout of Exostinus serratus, USNM v16565, in various views, including cutaways. A, general disposition of elements with matrix filtered away; anterior to lower right. B, anterior view showing articulated left side of snout. C, anterior view with cutaway at level of internal canals of premaxilla. D, anterior view with cutaway at level of widest part of infraorbital canal. Abbreviations: MXioc, infraorbital canal; PMic, internal canals.
Figure 4 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus
Figure 4. Left maxilla of Exostinus serratus, USNM v16565. A, lateral view (anterior to the left). B, medial view (anterior to the right). C, anterior view. Abbreviations: MXaf, alveolar foramen; MXcc, canthal crest; MXcl, crista lateralis; MXct, crista transversalis; MXdaf, dorsal accessory foramen; MXfbfp, foramen at base of facial process; MXfjt, foramen of jugal trough; MXfp, facial process; MXil, inflection before lacrimal facet; MXioc, infraorbital canal; MXlaf, lacrimal facet; MXlic, lamina intercristalis; MXlpmp, lateral premaxillary process; MXlr, lacrimal recess; MXmpmp, medial premaxillary process; MXnaf, nasal facet; MXnm, narial margin; MXoe, oval eminence; MXpfa, prefrontal articulation; MXpff, prefrontal facet; MXsdt, supradental thickening; MXtro, trough for jugal; MXut, upturned tab; MXvof, vomerine facet.
Figure 5 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus
Figure 5. Left maxilla of Exostinus serratus, USNM v16565. A, dorsal view (anterior to the left). B, ventral view (anterior to the left). C, posterior view. Abbreviations: MXcl, crista lateralis; MXct, crista transversalis; MXdg, dental gutter; MXem, embayment; MXfjt, foramen of jugal trough; MXin, internal naris; MXlaf, lacrimal facet; MXlic, lamina intercristalis; MXlpmp, lateral premaxillary process; MXlpt, lateral palatal trough; MXlr, lacrimal recess; MXmpf, medial palatal facet; MXmpmp, medial premaxillary process; MXplf, palatine facet; MXps, palatal shelf; MXpsf, facet on palatal shelf; MXtro, trough for jugal; MXut, upturned tab; MXvof, vomerine facet.
Figure 6 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus
Figure 6. Left prefrontal of Exostinus serratus, USNM v16565. A, lateral view (anterior to the left). B, medial view (anterior to the right). C, anterior view. Abbreviations: PFaf, antorbital flange; PFafpr, anterior foramen near paranasal recess; PFcc, canthal crest; PFdpal, depression for palatine; PFds, dermal surface; PFfos, foramen in orbital surface; PFfp, frontal process; PFfrf, frontal facet; PFjuf, jugal facet; PFlaf, lacrimal facet; PFlf, lacrimal foramen; PFmf, maxillary flange; PFnaf, nasal facet; PFpfpr, posterior foramen near paranasal recess; PFpr, paranasal recess; PFrslp, ridge on sublacrimal process; PFslp, sublacrimal process.
Figure 9 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus
Figure 9. Left jugal of Exostinus serratus, AMNH 1608. A, lateral view (anterior to the left). B, medial view (anterior to the right). Abbreviations: JUas, adductor surface; JUds, dermal surface; JUecc, ectopterygoid contact; JUfft, foramen in flattened table; JUft, flattened table; JUls, lateral sulcus; JUms, maxillary surface; JUmxc, maxillary contact; JUoar, orbital/adductor ridge; JUos, orbital surface; JUpof, postorbital facet; JUpqjp, pit in quadratojugal process; JUqjp, quadratojugal process.
Figure 10 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus
Figure 10. Frontals of Exostinus serratus. A, anterior tip of frontal, USNM v16565, dorsal view (anterior to the left). B, anterior tip of frontal, USNM v16565, ventral view (anterior to the left). C, mid-portion of frontal, AMNH 1608, dorsal view (anterior to the left). D, mid-portion of frontal, AMNH 1608, ventral view (anterior to the right). E, mid-portion of frontal, AMNH 1608, right lateral view (anterior to the right). F, posterior right portion of frontal, USNM v16565, dorsal view (anterior to the left). G, posterior right portion of frontal, USNM v16565, ventral view (anterior to the left). Abbreviations: FRab, anterior bifurcation; FRcc, crista cranii; FRfnt, foramen near tip; FRfppff, foramen posterior to prefrontal facet; FRls, lateral spine; FRms, median spine; FRnaf, nasal facet; FRpaa, parietal articulation; FRpat, parietal tab; FRpoff, postfrontal facet; FRpff, prefrontal facet; FRpfs, partially fused suture; FRprff, prefrontal facet.
Figure 8 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus
Figure 8. Left nasal of Exostinus serratus, USNM v16565. A, dorsal view (anterior to the left). B, lateral view (anterior to the left). C, ventral view (anterior up). Abbreviations: NAfrf, frontal facet; NAls, lateral shelf; NAms, medial shelf; NAmxf, maxillary facet; NAnaf, nasal facet; NApff, prefrontal facet; NApmw, premaxillary wedge; NAsptc, sulcus for parietotectal cartilage.
Supplementary material 1 from: Nieto-Montes de Oca A, Sánchez-Vega H, Durán-Fuentes I (2018) A new species of knob-scaled lizard (Xenosauridae, Xenosaurus) from the Sierra Madre Oriental of Puebla, Mexico. ZooKeys 737: 141-160. https://doi.org/10.3897/zookeys.737.15095
Specimens examined :
Figure 6 from: Nieto-Montes de Oca A, Sánchez-Vega H, Durán-Fuentes I (2018) A new species of knob-scaled lizard (Xenosauridae, Xenosaurus) from the Sierra Madre Oriental of Puebla, Mexico. ZooKeys 737: 141-160. https://doi.org/10.3897/zookeys.737.15095
Figure 6 Xenosaurus sp from "Zacapoaxtla" (no further data). Specimen not collected. Photograph by Luis Canseco Márquez.
Figure 5 from: Nieto-Montes de Oca A, Sánchez-Vega H, Durán-Fuentes I (2018) A new species of knob-scaled lizard (Xenosauridae, Xenosaurus) from the Sierra Madre Oriental of Puebla, Mexico. ZooKeys 737: 141-160. https://doi.org/10.3897/zookeys.737.15095
Figure 5 Geographic distribution of Xenosaurus fractus (star = type locality) and geographically closest species. Digital elevation model taken from INEGI (2017).
Figure 4 from: Nieto-Montes de Oca A, Sánchez-Vega H, Durán-Fuentes I (2018) A new species of knob-scaled lizard (Xenosauridae, Xenosaurus) from the Sierra Madre Oriental of Puebla, Mexico. ZooKeys 737: 141-160. https://doi.org/10.3897/zookeys.737.15095
Figure 4 Variation in color pattern (dorsal view) in the type series of Xenosaurus fractus. Top row, left to right: MZFC 32181, SVL = 110.4 mm; MZFC 32179, holotype, SVL = 115.3 mm; MZFC 32182, SVL = 122.9 mm; MZFC 32187, SVL = 111.6 mm; MZFC 32180, SVL = 115.1 mm; bottom row, left to right: MZFC 32183, SVL = 105.0 mm; MZFC 32186, SVL = 103.6 mm; MZFC 9579, SVL = 111.4 mm; MZFC 32184, SVL = 94.2 mm; MZFC 32185, SVL = 84.8 mm. Scale bars: 20 mm.
Figure 3 from: Nieto-Montes de Oca A, Sánchez-Vega H, Durán-Fuentes I (2018) A new species of knob-scaled lizard (Xenosauridae, Xenosaurus) from the Sierra Madre Oriental of Puebla, Mexico. ZooKeys 737: 141-160. https://doi.org/10.3897/zookeys.737.15095
Figure 3 Xenosaurus fractus in life. Specimens not collected. Top: Puebla, Municipality of Xochitlán, 200 m N ex-hacienda Apulco, cloud forest, 1450 m. Bottom: Municipality of Huehuetla (no further data). Photographs by Luis Canseco Márquez.
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