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Showing 1 to 15 of 15 for “"skink"”.
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Systematics and Species Delimitation in New Guinea Skink Species Complexes (Squamata: Scincidae)
<p>Though among the most controversial topics in systematic and evolutionary biology, species are a fundamental unit in biology, and are utilized by and critical to a wide variety of studies in the life sciences. Despite this importance, little work has focused on developing and examining objective …
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A Phylogenetic History of the Tenerife Skink Chalcides viridanus: A multi-locus Coalescent Approach
Previous studies on the Tenerife skink Chalcides viridanus found clear links between observed within-island cladogenesis and the geological history of the island. Since these studies there have been many advances in conceptual, numerical and methodological approaches in phylogenetic analyses. This …
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The vomeronasal organ of the skink, Scincella lateralis: the morphology and role in predation
A qualitative and quantitative comparison of the vomeronasal organ was made of the autarchoglossan lizards: Scincella lateralis, Eumeces fasciatus, Eumeces inexpectatus, and Ophisaurus ventralis, and the ascalobotans: Sceloporus undulatus, Hemidactylus turcicus, and Xantusia vigilis. As judged by …
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Historical Processes and Genetic Implications of Limb Reduction and Loss in an Island Skink Lineage
… endemic radiation of Philippine semi-fossorial skinks of the genus Brachymeles represent one of the few radiations of scincid lizards to possess both fully limbed and limbless species. And yet, nothing is known of the phylogenetic relationships of this exceptional group. Morphologically similar …
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Response of the Ozark Zigzag Salamander (Plethodon Angusticlavius) to High and Low Level Threats
… which were substrate markings from a five-lined skink (Eumeces fasciatus). This result may indicate that salamanders and skinks are competitors or skinks are predators of salamanders. This study also examined the aggressive and antipredatory behaviors of salamanders toward skinks. Small …
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Unraveling the interaction between hormones and incubation temperature on lizard cognition
… affects cognitive development in two species of skinks: the delicate skink (Lampropholis delicata), and the common garden skink (L. guichenoti). I manipulated egg CORT levels and incubation temperature and then assessed lizards' performance across multiple cognitive domains, alongside …
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Unraveling the interaction between hormones and incubation temperature on lizard cognition
… affects cognitive development in two species of skinks: the delicate skink (Lampropholis delicata), and the common garden skink (L. guichenoti). I manipulated egg CORT levels and incubation temperature and then assessed lizards' performance across multiple cognitive domains, alongside …
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Ecological Impact of Epigeal Termitaria on Vertebrates in the Tsavo Region of Southeast Kenya
… the great plated lizard and short-necked skink. I determined that mounds’ microclimate is less variable than that of the ambient. More work is needed to further our understanding of termite mounds' impacts on vertebrates. This study led to discoveries of species not known to be in the area …
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On The Cranial Osteology of <em>Eremiascincus</em> and Its Use For Identification.
… features and how it fits into a model of skink evolution. Skulls of <em>Eremiascincus</em> were examined within five separate contexts: 1) a description of the cranial osteology, 2) a qualitative comparison of individual cranial elements of <em>Eremiascincus</em> to closely related …
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Studies of Susceptibility of Broad-Headed Skinks (<em>Eumeces laticeps</em>) and Laboratory Mice (<em>Mus musculus</em>) to Strain MI-2 of <em>Borrelia burgdorferi</em> and Vector Competence of the Tick <em>Ixodes scapularis</em>
<p>Reservoir competence of the broad-headed skink, <em>Eameces laticeps</em>, for <em>Borrelia burgdorferi</em> was evaluated. Attempts to infect broad-headed skinks with MI-2 strain spirochetes were unsuccessful. Spirochetes could not be isolated from various tissues of seven lizards at least 30 …
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Investigating the Patterns of Convergence in Pectoral Girdle Reduction During the Evolution of Limblessness in Lerista (Scincidae)
… models of the pectoral girdles of an Australian skink genus, Lerista. This group contains pentadactyl species, fully limbless species and many species with intermediate morphologies. I employed a 3D geometric morphometric analysis to compare the shapes of these structures and revealed that the …
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Phylogeny and evolution of Lerista (Lygosominae, Scincidae, Squamata).
In this thesis, I investigate the phylogeny and evolution of Lerista, a clade of more than 75 species of scincid lizards, distributed in arid, semi-arid, and seasonally dry habitats throughout Australia. Among extant tetrapods, Lerista is exceptional in comprising a large number of closely-related …
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Evolution of the structure and function of vertebrate brain gonadotropin-releasing hormone
… likely that they should have identical GnRHs. In skink (Calcides ocellatus tiligugu) brain one GnRH, which co-eluted with His⁵,Trp⁷,Tyr⁸-GnRH, was demonstrated. Two other lizards (Cordylis nigra and Pordarcis s. sicula) have been studied (Powell et al., 1985; R.C. Powell, G. Ciarcia, V. Lance, …
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Geographic patterns of speciation in West and Central Africa: The role of rivers, mountains, and refugia
… hypothesis in a widespread tropical African skink species, Trachylepis maculilabris, using a combination of dated phylogeographic analysis, population demography, and ecological niche modeling with projections to the LGM and mid-Holocene. I found five distinct genetic clusters with divergence …