The Linguatula serrata is a tongue-shaped parasite that infects carnivores or insectivorous reptile as final and herbivores as intermediate host. The aim of this study was to evaluate the prevalence of nymphal stages of L. serrata in mesenteric nodes (MLN) and mediastinal lymph nodes of cattle slaughtered in Tabriz slaughterhouse, North West of Iran. Mesenteric and mediastinal lymph nodes of 640 cattle of different sex and age were inspected. A digestion method was applied for investigation of samples revealing an infection prevalence of 18.9 %. The MLNs in 97 cattle out of 640 (15.1 %) and the mediastinal lymph nodes in 47 cattle out of 640 (7.3 %) were infected by L. serrata nymphs. The results showed infection rate of mesenteric lymph nodes higher than mediastinal mesenteric lymph nodes (P \ 0.05). The infection rate increased with age (P \ 0.05). Although a significant difference seen in the infection rate between male and female but it was not significant at the same age groups of male and female (P [ 0.05). In addition, there was a significant difference in the infection rate of different seasons (P \ 0.05). Linguatulosis occurs as an endemic zoonosis in the northwest of Iran and has an active transmission life cycle.
Composition of the volatile oil of Nepeta macrosiphon Boiss. (Lamiaceae) was investigated by GLC and GC-MS. Seventy-three components, representing 96.9% of the total oil, were characterized. The main components of the oil were spathulenol (28.8%), α-cadinol (13.6%), bicyclogermacrene (10.1%), β-caryophyllene (9.6%) and linalool (5.6%). Nepetalactone isomers were not present in the essential oil of N. macrosiphon.
The study investigates the ability of thermal remote sensing in identification of seismic active areas. The thermal characteristics of Land Surface Temperature (LST) represent changes before strong earthquakes. The objective of this research is to find the relationship between earthquake active areas and thermal properties of earth surface. Landsat ETM+ images and earthquake points from USGS have been used as the material of the study. LST have been calculated by the image data and magnitudes of earthquake activity have been interpolated by the seismic point data. The study has found that the areas with higher LST values in long period have more seismic activity on central Alborz Mountain Range in Iran and that the areas along the major faults also have higher LST values.
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