Publications

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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
reservoir competence of the southeastern five-lined skink (eumeces inexpectatus) and the green anole (anolis carolinensis) for borrelia burgdorferi.the reservoir competence of two lizard species, the southeastern five-lined skink (eumeces inexpectatus) and the green anole (anolis carolinesis), for borrelia burgdorferi was evaluated. skinks and anoles were exposed by needle inoculation or tick bite to b. burgdorferi. xenodiagnosis with larval ixodes scapularis and culture of tissues were used to asses infection and the ability of infected lizards to infect attached ticks. both lizard species were susceptible to b. burgdorferi by both routes ...19968651379
lizards as hosts for immature ixodes scapularis (acari: ixodidae) in north carolina.previously archived museum specimens of lizards collected throughout north carolina were examined for ixodes scapularis (say). lizards (n = 1,349) collected in 80 of north carolina's 100 counties were examined. lizards with ticks were collected in 23 (29%) of the 80 counties from which lizards were examined. i. scapularis was detected on 8.7% (n = 117) of the lizards and was the sole species of tick obtained from lizards. immature ticks were most frequently found on the southeastern five-lined s ...19979439111
parasitism of lizards by immature stages of the blacklegged tick, ixodes scapularis (acari, ixodidae).from 1982-1985 and 1993-1999, a total of 309 individual reptiles, mostly lizards and snakes, belonging to 12 species (american alligator, six lizard species, five snake species) was captured on st. catherine's island, liberty county, georgia, usa, and examined for ticks. three lizard species, the broad-headed skink eumeces laticeps, southeastern 5-lined skink eumeces inexpectatus, and eastern glass lizard ophisaurus ventralis, were severely infested with larvae and nymphs of the blacklegged tick ...200212537298
transmission, host specificity, and seasonal occurrence of cyrtosomum penneri (nematoda: atractidae) in lizards from florida.experimental infections and field-collected lizards were used to investigate issues of transmission, host specificity, and seasonal occurrence in the nematode cyrtosomum penneri (cosmocercoidea: atractidae). anolis sagrei (87 males, 42 females) were captured from the florida southern college campus, polk county, florida, from october 2010 to september 2011, and 8,803 c. penneri were collected from their intestines. during the breeding season all sexually mature (svl ≥ 34 mm) a. sagrei were infec ...201323020090
influence of stressor duration on leukocyte and hormonal responses in male southeastern five-lined skinks (plestiodon inexpectatus).environmental stressors elicit elevations of plasma glucocorticoid hormones. stressors also result in increases in the circulating heterophil to lymphocyte ratio (h:l ratio), which has been linked to increased glucocorticoids. recently, there has been debate about the extent to which stress-induced elevations of corticosterone are tied to increases in the h:l ratio and about whether one measure of physiological stress might be used in lieu of the other. few studies have examined the responses of ...201222791614
pp/pyy cells from endocrine pancreas of the scincid lizard eumeces inexpectatus synthesize acth- and alpha-msh-like molecules.the endocrine pancreas of the scincid lizard eumeces inexpectatus secretes four major hormones, insulin, glucagon, somatostatin, and pancreatic polypeptide (pp); in addition, other peptides and neuropeptides, often colocalized in one of the principal cell types (a, b, d, and pp), were detected by light and ultrastructural immunocytochemistry. in particular, the pancreas is rich in peptide tyrosine tyrosine (pyy), acth, and alpha-msh immunoreactivity. when single- and double-immunolabeled serial ...199910562446
pygidial secretions ofpasimachus subsulcatus (coleoptera: carabidae) deter predation byeumeces inexpectatus (squamata: scincidae).the carabid beetlepasimachus subsulcatus is an abundant ground-dwelling insect in west central florida that exudes a powerful mucous membrane irritant when disturbed. this secretion can be sprayed over 10 cm from the abdominal tip. the southeastern five-lined skink,eumeces inexpectatus, is an abundant insectivorous lizard sympatric withpasimachus. we assessed the availability ofpasimachus toeumeces and found it to be within the foraging microenvironment of the lizard. analysis ofeumeces gut cont ...198924271904
the ecological cost of morphological specialization: feeding by a fossorial lizard.head size and shape of reptiles may reflect selection for multiple uses. for example, sexual selection for large head size may enhance feeding efficiency. in contrast, morphological characteristics of the heads of fossorial reptiles suggests that fossoriality may have evolved at the expense of reduced effectiveness in feeding. our research focused on the question: does a fossorial lizard feed less effectively than a non-fossorial lizard? to answer this question, we measured the time, number of b ...198728311418
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