Gross lung morphology is examined in representative species from four genera within the order Lagomorpha (Lepus californicus, Sylvilagus nuttalli, Oryctolagus cuniculus, Ochotona princeps), and compared with a representative rodent out-group (Spermophilus richardonsii). Examination of pulmonary morphology reveals several correlations between the thoracic morphology and locomotor behavior. Lepus...

n engl j med 369;12 nejm.org september 19, 2013 1178 325-bp ompA sequences revealed that the agent clustered with other R. sibirica subspecies and was most closely related to R. sibirica subspecies sibirica 246, which had been isolated from Dermacentor nuttalli in Russia (Fig. 1). In serum samples obtained from the patient, the titers of IgM and IgG antibodies against R. sibirica on indirect im...

A total of 586 reptiles, belonging to 35 species and five subspecies, were examined in surveys aimed at determining the species spectrum and geographic distribution of ticks that infest them. Of these reptiles 509 were tortoises, 28 monitor or other lizards, and 49 snakes. Nine ixodid tick species, of which seven belonged to the genus Amblyomma, and one argasid tick, Ornithodoros compactus were...

Fleas are haematophagous ectoparasites that exhibit varying degrees of host specificity. Flea abundance is highest on principal hosts and lower on auxiliary hosts but may vary greatly among auxiliary hosts. We investigated the feeding and energy expenditure for digestion in two flea species Parapulex chephrenis and Xenopsylla ramesis on a principal host (Acomys cahirinus and Meriones crassus, r...