hamid belgheis zadeh

Mollusca: Gastropoda (Mollusca: Gastropoda) are the main groups of invertebrates in various ecosystems that are known as pests of vegetable and summer crops as well as the intermediate host of a number of parasitic protozoan and worms. They are important in various fields of agriculture, medicine and veterinary medicine. Since there is no report on the species diversity of terrestrial snails in the west of Isfahan province, this study was conducted to study the biodiversity of terrestrial snails in the area and search for important species from different dimensions. For this purpose, the west of Isfahan province was divided into 5 regions (Faridan, Fereydoun Shahr, Chdegan, Khansar and Golpayegan). Then the samples collected from these stations were systematically and morphologically examined using valid identification keys up to the species level. The effect of environmental factors such as temperature and relative humidity on the distribution of species was also determined. According to the results, it was found that the optimum temperature for the collected snails was 19-15°C and the best relative humidity was 25-45%. Finally, based on the results, six species of four genera under two families were identified.

The family Sciomyzidae belongs to the order Diptera. The larvae of snail-killing flies feed on aquatic snails. These snails host a large group of human and animal parasites such as Fasciola and Schistosoma. Fighting these parasites takes place through different methods such health trainings, environmental rehabilitation, treatment of patients, and fighting the intermediary host snails. Hence, these flies play an important role in biological controls. In this study, the use of molluscicide flies in Nour County in Mazandaran Province was studied from April to August 2015 and a total of 1269 mature samples were obtained from the following five stations using sweeping nets: Izad Shahr paddy field, Tirakdeh village paddy field, Chamestan, Sabezeh Rud (Royan), and Nour. The samples were transferred to the University’s systematic animal studies laboratory following stabilization. Finally, after investigations and identity examinations it was found that the samples of the subfamily Phaeomyiinae had the one genus and one species. It was found that the subfamily Sciomyzinae consists of the following two tribe: Sciomyzini and Tetanocerini. The tribe (Sciomyzini) consists of three genera and five species whereas the latter one (Tetanocerini) consists of two genera and two species. Therefore, both of the subfamily have a total of six genera and eight species that the most abundant species are Pelidnoptera leptiformis and the least abundant species are belonging to Colobaea punctata ; and from the point of location , the most abundancy had been occurred in Sabze-rud royan and the least abundancy had been occurred in Tirakde village.

The poultry red mite, Dermanyssus gallinae is one of the most economically important ectoparasites in hens and some species of mammals worldwide. Cases of human infestation have been reported worldwide. In this study we report infestation in three members of a family referred with pruritus and allergic dermatitis rash. They have col­lected very small animals and carried them to the laboratory which later was confirmed as D. gallinae. They claimed that they had been bitten with this ectoparasite. This is the first case report of human infestation owing to D. gallinae from Iran.

Tick paralysis is a disease of human and animals characterized by an acute ascending flaccid motor paralysis. The condition may terminate fatally unless the tick(s) are removed before respiratory paralysis occurs. Patient: A 48 years old female was referred to a clinic in Tehran with edema at the head and neck regions. She had fever and disequilibrium. She reported a travel to mountainous parts of Tehran in early spring. During physical examination a small tick was found attached firmly to the head. It has been detached and sent to Razi Research Institute and a female Dermacentor marginatus (Acari: Ixodidae) was verified. Following the tick removal the patient''s condition was improved. With respect to a rich fauna of Ixodid ticks in Iran, it is important to keep in mind the tick associated complications in this area.