background & aim: sweet basil (ocimum basilicum), a plant that is extensively cultivated in some countries, is used to enhance the flavour of salads, sauces, pasta, confectioneries and other products as both a fresh and dried herb. the effect of foliar application of jasmonic acid and reduced irrigation on essential oil yield and chemical components of two iranian landrace of basil (ocimum ...

Serum samples from white-tailed deer, Odocoileus virginianus Zimmermann, collected from 1982 through 1992 from the southeastern United States were tested for antibodies reactive to Ehrlichia chaffeensis Anderson, Dawson, Jones, & Wilson, the causative agent of human ehrlichiosis. Results were compared between areas based on known infestations of the lone star tick, Amblyomma americanum L., a su...

Maximum likelihood trees produced from 18S rDNA sequences separated 14 Xiphinema and five Xiphidorus nematode species from Brazil into distinct groups that concurred with their current morphological taxonomic status. Species belonging to the X. americanum group (X. brevicolle, X. diffusum, X. oxycaudatum, and X. peruvianum) formed a single group that was clearly separated from the other Xiphine...

PREMISE OF THE STUDY Glacial cycles have influenced the genetic structure of many species. In addition to facilitating genetic divergence, isolation in multiple glacial refugia may have contributed to the development of genetic incompatibility and reproductive isolation. We examined the phylogeography of Campanulastrum americanum, a monocarpic herbaceous plant that exhibits strong intraspecific...

Hepatozoon americanum is a protozoan that causes American canine hepatozoonosis (ACH) in the southern United States; Hepatozoon canis, the causative agent of canine hepatozoonosis in Africa, Asia, Europe, and South America, has not previously been definitively identified in dogs in the United States. To characterize the diversity of Hepatozoon spp. in domestic dogs from Oklahoma, blood samples ...

Healthy adult albino rats of either sex of Wistar strain weighing 150 to 250 g were used after approval of the Institutional Ethics Committee. They were kept on standard pellet diet and were allowed free access to food and water. The doses of antitubercular drugs (isoniazid (I)-27 mg/kg/day, rifampicin (R)-54 mg/kg/day, pyrazinamide (Z)-135 mg/kg/day) were extrapolated from daily human dose usi...

Unique oligonucleotide probes were synthesized to distinguish among closely related vertebrate mitochondrial rDNA sequences present in residual bloodmeals in emergent Amblyomma americanum (L.) (Acari: Ixodidae) nymph life-stage ticks. Use of these probes enabled the identification of the Eastern gray squirrel as an important bloodmeal source in nymphs harboring Ehrlichia and Borrelia species. T...