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differential effects of ovine lh and human chorionic gonadotropin on testicular interstitial cells of the lizard leiolopisma laterale. 19734715237
mesocestoides sp. in wild northern bobwhite ( colinus virginianus) and scaled quail ( callipepla squamata).mesocestoides spp. have a cosmopolitan distribution with zoonotic potential. mesocestoides tetrathyridia were found under the pericardial sac, on the surface of the crop, and in the peritoneal cavity of a hunter-harvested northern bobwhite ( colinus virginianus) and a scaled quail ( callipepla squamata) collected during the 2016-17 quail hunting season in northwest and southern texas, us respectively. molecular analysis indicated that the tetrathyridia from the birds likely belonged to an undesc ...201829595383
temporal germ cell development strategy during spermatogenesis within the testis of the ground skink, scincella lateralis (sauria: scincidae).ground skink (scincella lateralis) testes were examined histologically to determine the testicular organization and germ cell development strategy employed during spermatogenesis. testicular tissues were collected from 19 ground skinks from aiken county, south carolina during the months of march-june, august, and october. the testes consisted of seminiferous tubules lined with germinal epithelia in which germ cells matured in close association with sertoli cells. as germ cells matured, they migr ...200919344944
the combined effects of rivers and refugia generate extreme cryptic fragmentation within the common ground skink (scincella lateralis).rivers can act as both islands of mesic refugia for terrestrial organisms during times of aridification and barriers to gene flow, though evidence for long-term isolation by rivers is mixed. understanding the extent to which riverine barrier effects can be heightened for populations trapped in mesic refugia can help explain maintenance and generation of diversity in the face of pleistocene climate change. herein, we implement phylogenetic and population genetic approaches to investigate the phyl ...201019780813
observations on variation in the ultrastructure of the proximal testicular ducts of the ground skink, scincella lateralis (reptilia: squamata).the north american ground skink, scincella lateralis, is a member of the most speciose family of lizards, the scincidae. the only descriptions of the testicular ducts of skinks concern the light microscopy of 13 species in eight other genera. we combine histological observations with results from transmission electron microscopy on a sample of skinks collected throughout the active season. the single rete testis has squamous epithelium with a large, indented nucleus and no junctional complexes b ...201323192894
testing the role of meander cutoff in promoting gene flow across a riverine barrier in ground skinks (scincella lateralis).despite considerable attention, the long-term impact of rivers on species diversification remains uncertain. meander loop cutoff (mlc) is one river phenomenon that may compromise a river's diversifying effects by passively transferring organisms from one side of the river to the other. however, the ability of mlc to promote gene flow across rivers has not been demonstrated empirically. here, we test several predictions of mlc-mediated gene flow in populations of north american ground skinks (sci ...201323658778
effects of temperature and oxygen on growth and differentiation of embryos of the ground skink, scincella lateralis.development of reptile embryos is dependent upon adequate oxygen availability to meet embryonic metabolic demand. metabolic rate of embryos is temperature dependent, with oxygen consumption increasing exponentially as a function of temperature. because metabolic rate is more temperature sensitive than diffusion, developmental processes are predicted to be oxygen-limited at high temperatures. we tested the hypothesis that the amount of development lizard embryos achieve in the oviduct is dependen ...201526036959
ultrastructural examination of spermiogenesis within the testis of the ground skink, scincella laterale (squamata, sauria, scincidae).although the events of spermiogenesis are commonly studied in amniotes, the amount of research available for lizards (sauria) is lacking. many studies have described the morphological characteristics of mature spermatozoa in lizards, but few detail the ultrastructural changes that occur during spermiogenesis. the purpose of this study was to gain a better understanding of the subcellular events of spermiogenesis within the temperate ground skink (scincella laterale). the morphological data prese ...200717154286
oviductal sperm storage in the ground skink scincella laterale holbrook (reptilia: scincidae).the reproductive tracts of female ground skinks, scincella laterale, collected at various times throughout their reproductive cycle were examined by light and transmission electron microscopy. examination of the tracts revealed that sperm are retained in the posterior vagina after mating but prior to the ovulation of oocytes. the sperm are not sequestered in specialized glands but occur in scattered clusters in the lumen or among the deep, narrow rugae. the simple columnar lining of the vagina c ...200415229870
the strategy of tail-autotomy in the ground skink, lygosoma laterale. 19715548871
morphological and molecular characterization of post-larval pre-tetrathyridia of mesocestoides sp. (cestoda: cyclophyllidea) from ground skink, scincella lateralis (sauria: scincidae), from southeastern oklahoma, usa.free pre-tetrathyridia of mesocestoides sp. are described, for the first time, from samples obtained from the coelomic cavity of a ground skink, scincella lateralis from oklahoma, usa. closer examination of these early stage tapeworms revealed they were transitional metamorphosis stages between a post-hexacanth procercoid form to the full metacestode of mesocestoides. a series of transitional stages from before the suckers and apical organ are developed, through full development of both structur ...201829400996
sylvatic infestation of oklahoma reptiles with immature ixodes scapularis (acari: ixodidae).reptiles were collected in nine counties in oklahoma from september 2002 to may 2004 and examined for ixodes scapularis (say) larvae and nymphs to determine seasonal incidence and prevalence of these ticks. in total, 209 reptile specimens consisting of nine species of lizards and seven species of snakes were collected. plestiodon fasciatus (l.) was the most numerous species collected (55%) followed by sceloporus undulatus (latreille) (17%) and scincella lateralis (say) (11%). less than 10 indivi ...201526336240
food chemical discriminations by an herbivorous lizard, corucia zebrata.adjustment of chemosensory response to diet should be apparent in evolutionary changes corresponding to dietary shifts. because most lizards are generalist predators of small animals, relationships between chemosensory behavior and diet are difficult to detect. nevertheless, the evolution of herbivory by a small number of lizards provides an opportunity to detect any corresponding change in response to plant chemicals. i studied tongue-flicking and biting by the large, herbivorous scincid lizard ...200010684560
a new species of eimeria schneider, 1875 (apicomplexa: eimeriidae) from the solomon ground skink, sphenomorphus solomonis (boulenger) (sauria: scincidae) from papua new guinea.between september 1990 and november 1991, 19 sphenomorphus spp. skinks, including nine s. jobiense, three s. simus, and seven solomon ground skinks, s. solomonis (boulenger), were collected from madang and morobe provinces, papua new guinea (png), and examined for coccidia. a single s. solomonis was found to be infected with a new species of eimeria schneider, 1875. oöcysts of eimeria perkinsae n. sp. are ellipsoidal with a smooth, colourless, bi-layered wall, measure 18.6 × 14.7 μm, and have a ...201424395577
lizard tail autotomy: function and energetics of postautotomy tail movement in scincella lateralis.handling of autotomized, thrashing and autotomized, exhausted tails of the lizard scincella lateralis by mammals and snakes was tested to examine the function of postautotomy tail movement. tail movement attracted a mammal's attack to the tail, permitting the lizard to escape and increased the time required for a snake to subdue a tail before swallowing it, increasing the lizard's escape time by 40 percent. lactate concentrations of autotomized tails after movement were compared to those of inta ...198317815319
renal sexual segment of the ground skink, scincella laterale (reptilia, squamata, scincidae).mature squamates possess hypertrophied regions of the distal urinary ducts, the renal sexual segment (rss). the rss is believed to provide seminal fluid that mixes with sperm and is released into the female cloaca during coitus. this study is the first to describe ultrastructure of the rss in a lizard collected throughout the active season. the species examined, scincella laterale, represents the largest family (scincidae: 1,200 species) of lizards. although sperm are present in the posterior du ...200516121401
immature ixodes scapularis (acari: ixodidae) parasitizing lizards from the southeastern u.s.a.preserved museum specimens of 13 lizard and 3 snake species common in the southeastern u.s.a. were examined for immature ixodes scapularis say ticks. five eumeces and 4 ophisaurus lizard species yielded an infestation prevalence of 17.8% for species of eumeces and 29.0% for species of ophisaurus. mean intensity of larvae and nymphs was 7.1 and 2.7, respectively, for species of eumeces, and 6.3 and 1.4, respectively, for species of ophisaurus. collection dates of the lizards ranged from january t ...19938410539
relative utilization of reptiles and rodents as hosts by immature ixodes scapularis (acari: ixodidae) in the coastal plain of north carolina, usa.the interaction of immature black-legged ticks, ixodes scapularis, with reptiles and rodents was investigated in various woodland habitats in the coastal plain of north carolina. reptiles were sampled from april 1 to september 30, 1991. no ticks were found on 95 specimens representing 16 species of snakes. ticks were found on 54 (36.7%) of 147 lizards. i. scapularis was the only tick recovered from lizards. some lizards were collected in drift fence traps each month of the study except august. c ...19937628223
endocrine control of clutch size in reptiles. i. effects of fsh on ovarian follicular size-gradation in leiolopisma laterale and anolis carolinensis. 19734689585
3h-gaba administration during tail regeneration of lizards and autoradiographical localization.thirteen lizards (anolis carolinensis and scincella lateralis) were injected with 3h-gaba (tritiated gamma-aminobutyric acid) in order to study its localization inside the regenerating tail spinal cord (sc) by means of light and electron microscopic autoradiography. one and three hours after intraperitoneal injection, the radioactivity was essentially localized in regenerating nerves and pale cells, mostly contacting the central canal of the sc as typical cerebrospinal-fluid-contacting-neurons ( ...19938376756
two new species of coccidia (apicomplexa: eimeriidae) from ground skinks, scincella lateralis (sauria: scincidae), from arkansas, usa.between february 2011 and january 2014, 75 ground skinks, scincella lateralis (say) were collected from 13 counties of arkansas and mccurtain county, oklahoma, usa, and examined for coccidia. two (3%) and 11 (15%) s. lateralis were found to be passing oöcysts of a new choleoeimerian and isosporan, respectively. oöcysts of choleoeimeria ouachitensis n. sp. are ellipsoidal to cylindroidal with a smooth, colourless, bi-layered wall and measure 27.2 × 15.6 μm, and have a length/width (l/w) ratio of ...201424711115
a new skink of the genus scincella mittleman, 1950 (squamata: scincidae) from ba den mountain, tay ninh province, southern vietnam.ba den is an isolated mountain in southern vietnam and home to two endemic species of lizards. herein, we describe another endemic species, a new skink of the genus scincella mittleman, 1950, from the area based on morphological data, including hemipenial characters and nucleotide sequences of coi. the following morphological characters diagnose scincella badenensis sp. nov.: medium size in adults (snout-vent length up to 64.4 mm); toes reach to fingers when limbs adpressed; midbody scale rows 3 ...201931716948
the sexual segment of hemidactylus turcicus and the evolution of sexual segment location in squamata.the kidneys of the mediterranean gecko, hemidactylus turcicus (gekkonidae), were investigated using light and electron microscopy with the primary focus placed on morphology of the sexual segment of the kidney. the nephrons of male h. turcicus are composed of five distinct regions: 1) a renal corpuscle and glomerulus, 2) a proximal convoluted tubule, 3) an intermediate segment, 4) a distal convoluted tubule, and 5) the sexual segment of the kidney/collecting duct. female h. turcicus is similar b ...201121538471
isospora manchacensis n. sp., an intranuclear coccidian from the louisiana ground skink, scincella lateralis (say, 1823) (lacertilia: scincidae).isospora manchacensis n. sp. is described from ground skinks, scincella lateralis (say, 1823) from louisiana. overall prevalence at 6 sites near lake ponchartrain was 43.1% (59/137) and ranged from 8% (1/13) to as high as 60% (6/10). endogenous stages develop inside the nuclei of epithelial cells in the small intestine. infected hypertrophic nuclei migrate from the basal lamina of the host cell to the luminal striated border. oocysts in freshly passed fecal pellets usually contain a single contr ...20133625432
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