John M Sykes

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The basic principles of hematology used in mammalian medicine can be applied to reptiles. The appearances of the blood cells are significantly different from those seen in most mammals, and vary with taxa and staining method used. Many causes for abnormalities of the reptilian hemogram are similar to those for mammals, although additional factors such as(More)
This study examines the serotype distribution and clonal relatedness among Salmonella isolates obtained from healthy and diseased snakes. Isolates from extraintestinal body sites were obtained through routine diagnostic lab submissions from snakes in two facilities that had experienced a high prevalence of osteomyelitis in Crotalus species. Gastrointestinal(More)
A retrospective study of neoplasia in reptiles held at the Philadelphia Zoological Garden was conducted. A total of 3,684 original necropsy reports for the period 1901-2002 were reviewed and revealed 86 cases of neoplasia. Original glass slides or re-cuts from paraffin-embedded tissue blocks were examined for confirmation of the original diagnosis. At(More)
Oral eosinophilic granulomas were diagnosed in 16 tigers (Panthera tigris). All lesions were located on the hard or soft palate and typically consisted of flat or slightly raised circular ulcers. Histologic features of these lesions were essentially identical to those seen in oral eosinophilic granulomas of domestic cats and dogs. No clinical signs were(More)
Although recognized as a potential complication after endotracheal intubation in birds, the complication rate of postintubation tracheal obstruction in this taxon is unknown. Twenty-three cases of postintubation obstruction in birds from two institutions are reported. Clinical signs were noted an average of 16.6 days postintubation and consisted primarily(More)
OBJECTIVE To determine pharmacokinetics of butorphanol delivered via osmotic pumps in common peafowl (Pavo cristatus) as a method for analgesic administration to avian species. ANIMALS 14 healthy adult male common peafowl. PROCEDURES A preliminary experiment was conducted with 2 birds to establish time point and concentration requirements. Then, the(More)
The pattern of decomposition of branch-wood greater than 2 cm diameter is described for a one hectare site at Meathop Wood, Cumbria, based on studies carried out as part of the IBP between 1967 and 1972. Three phases of decomposition are recognised. Following the death of branches in the canopy and their colonisation by fungi, decomposition proceeded at an(More)
Steam purified, carboxylic and ester functionalized single-walled carbon nanotube (SWNT) and multi-walled carbon nanotube (MWNT) films with homogeneous distribution and flexible control of thickness and area were fabricated on polymeric and metallic substrates using a modified spray deposition technique. By employing a pre-sprayed polyelectrolyte, the(More)
An adult female Taylor's cantil (Agkistrodon bilineatus taylori) presented with marked spinal and mandibular osteomyelitis that cultured positive for Salmonella enterica subsp. houtenae, serovar IV 43:z4,z32:-. Progression of osteomyelitis was arrested by treatment using amikacin (0.026 mg/kg per hour) delivered via subcutaneous osmotic pump for 10 mo,(More)
  • John M Sykes
  • The veterinary clinics of North America. Exotic…
  • 2010
Reproductive biology and disorders are important facets of captive reptile management and are relatively common reasons for reptiles to present to the veterinarian. Although the factors and conditions for normal reproduction differ between species depending on their natural histories, the general principles and common approaches to disorders are presented(More)