The first detection of Amblyomma hebraeum (Acarina: Ixodidae) in Iran.

Amblyomma hebraeum (Koch, 1844), has been already reported from along the coast of South Africa, eastern Swaziland, southern Mozambique, eastern Botswana, and in southern and eastern regions of Zimbabwe. The aim of this study was to determine the ecto-parasites and the harmful arthropods of wildlife animals, collected from cages of Shiraz zoo in Fars province, southern Iran, in 2016. Accordingly, the Ticks collected from the white camels were identified as Amblyomma hebraeum. This species which was collected from white camel of Fars province, is reported for the first time from Iran. The presence of A. hebraeum poses a serious threat to the livestock industry in Iran and there is need to investigate the presence of this species in Iranian livestock.

Natural transovarial and transstadial transmission of Leishmania infantum by naïve Rhipicephalus sanguineus ticks blood feeding on an endemically infected dog in Shiraz, south of Iran.

BACKGROUND: The visceral leishmaniasis parasite, Leishmania infantum, is naturally transmitted through the bites of phlebotomine sand flies. Alternative routes of transmission are questioned. The main aim is to verify the passage of L. infantum kDNA in ticks, Rhipicephalus sanguineus, blood feeding on a parasitemic dog in Shiraz, south of Iran. METHODS: A total of 180 Leishmania-free ticks collected from fields and bred on lab rodents, were divided into eight groups and allowed to feed on a dog (Canis familiaris) for fixed periods of time. These and all third generation stages of ticks were checked for L. infantum kDNA using conventional PCR protocol. RESULTS: The infection rate was significantly higher in female than male ticks (p=0.043). The rates were higher among nymphs (25/60; 42%) than adult ticks (37/120; 30.8%). The kDNA of L. infantum was not detected in ticks 24 h post-feeding. It was, however, positive among the second to fourth groups of nymphs (4/10; 40%, 10/20; 50% and 11/20; 55%) and adult (12/30; 40%, 14/30; 46.6% and 11/30; 36.6%) ticks. Eggs and unfed larvae recovered from the third and fourth adult groups (2 weeks, 4 weeks) were 100% PCR-positive. The data revealed the passage of L. infantum kDNA in nymphs and adults of brown dog tick following fixed time intervals post blood feeding on an infected dog. CONCLUSIONS: The natural transovarial and transstadial passage of kDNA through ticks was shown by PCR.