جستجوی مقالات مرتبط با کلیدواژه « عقرب » در نشریات گروه « زیست شناسی »

Scorpions are a group belonging to the Phylum Arthropoda. They are found under stones and heavy things. Some researchers studied the scorpions of Iran. In the present investigation specimens of Hemiscorpius enischnochela were collected from Manoojan, South of Kerman Province. We used crowers bar and wood to move the stones and heavy tings. To obtain the samples, tongs and forceps were used. Scorpions were gathered from different areas of Manoojan, South of Kerman Province in different seasons. To identify and study morphological characters of specimens, the stereo –microscope Olympus Lica 2000 was used. In the present investigation different external morphological characters of males and females of H. enischnochela were studied. It indicated that there are some sexual dimorphism, between males and females in the mentioned species as follow: A- The length of body in male is longer than of that in female. B- In male mesosoma is longer than of that in female. C- In male metasoma length is longer than of that in female. D- In female pedipalp slightly less slender than in male. E- In male femur length is longer than of that in female. F- In male length of movable finger is more than length of moveable finger female. G- In female chela is more bulky than in male. H- In male poison sac length is more than length in male. I- In male, pectin length is more than pectin length in female. K- Male pectin has 16 teeth (in each pectin), female pectin has 8-9 teeth. J- In female genital operculum composed of a hexagonal plate, divided by a longitudinal furrow, in male genital operculum composed of two ovoid plates. Based on this study there is a distinct degree of sexual dimorphism in the Hemiscorpius enischnochela.

Some investigations have been performed on scorpions of Iran. No study has been carried out on some area of Iran. Some researchers reported several species of scorpions of Iran(Vachon ,1966,Farzanpay 1988). To obtain the scorpions, we used crower bar and wood to move the heavy materials like stone, clod, and other things. In the present investigation scorpions were collected from different parts of Andimeshk. To identify and study morphological characters specimens, stereo microscope Olympus Lica 2000, was used. In this investigation several scorpions including genera and species belonged to two families Buthidae and Hemiscorpiidae were studied. From family Buthidae,these species, including Compsobuthus matthisseni , Mesobuthus eupeus, Hottentotta saulcyi, Androctonus crassicauda, Razianus zarudnyi, Odentobuths bidentatus, Orthochirus scrobiculosus , and from family Hemiscorpiidae, species Hemiscorpius leptorus were studied.In taxonomy scorpions are order of Arthropoda phylum , belonged to invertebrata animals . Andimeshk district is a warm region and scorpions sting, usually occurs in this area. So we studied the venom species in the mentioned region

Study on ecology and biology of scorpions is very limited and the basis of this information the country, Iran, is the identification of habitats, and morphology of scorpions in different regions of Orthochirus species are widely distributed in the world. So far, 17 species have been identified throughout the world, of which 7 species have been found in different regions of Iran. In this study, Orthochirus specimens were collected from different regions of Khuzestan province and evaluated based on 27 morphometric values and 18 morphometric ratios. Four species, O. iranis, O. zagrosensis, O. farzanpay, and O. stackwelli were identified from different regions of Khuzestan province. Orthochirus. iranis and O. stackwelli had the most (41.6%) and the least (13.8%) frequencies, respectively, in the various regions of the province. The results of morphological studies and statistical analyzes on morphometric showed the complete separation of four types. Differences of species were confirmed based on the characteristics and ratios of the fourth segment of metasoma, carapace and telson sizes, the position of the median eyes, and pedipalp chela length and movable finger. The result of cluster analysis indicated that O. stackwell is morphologically distinct from other groups and had the most similarities between O. iranis and O. zagrosensis.

Arthropoda hemocytes are an important indicator of the safety of arthropoda against pathogens and parasitoids. Morphological characterization of hemocytes, is the first step to investigate the involvement of hemocytes in scorpion immunity and specific functions of cells. Due to limited researches on the biology of scorpion in this research the hemocytes of Mesobuthus eupeus were examined using light microscopy. Giemsa staining was used to identify these cells. Five identified types of hemocytes in this scorpion were; Prohemocyte, plasmatocyte granulocytes, spherulocytes, and oenocytoids. Two cell types are very common, plasmatocytes and granulocytes, Plasmatocytes constitute 70.2–81.2%, followed by granulocytes with 18.6–29.7% of the total cell population. Prohomocyte with 5-7 μm was the smallest and plasmocytes (12.25- 75.2 μm) were reported to be the largest hemolymph of Mesobuthus eupeus. Identification of blood cells of this scorpion for the first time and can provide a study of the immunity of scorpion against pathogens and its resistance to environmental conditions

In animals, Sexual dimorphism can be based on morphological characteristics or measurable characteristics. In scorpion, except a few species that have two sexual forms, there is no significant difference between males and females. In this study, 12 measurable characteristics of male and female Hottentotta saulcyi, from the Rudbar area located on the border of Lorestan, Isfahan and Chaharmahal and Bakhtiari provinces, were measured and analyzed by SPSS 16 software. Independent Sample T-test showed a significant difference between the three traits, the distance between the two shoulder lines, shoulder length, and the number of shoulder teeth between males and females. The result showed that in male, the length of the shoulder is significantly larger and also the number of shoulder teeth more than female, but the distance between the two shoulder strains in the material is larger than the male, and therefore, these traits can be in the diagnosis of both males and females.

Scorpion bite is one of our medical problems, but what is important regarding this matter is a fear that people have about this creature. Unfortunately a precise and right statistics toward the risk of this creature bite does not exist. Till based on that, it would be possible to recognize scorpion bite of our society is related to what species and it has what a status among category of death causes and based on that prepare a antivenom monovalan related to every scorpion; surely we cannot deny this problem in south and west regions of our country specially for hot seasons. By regarding the medically importance of the scorpions and human's healthy and also by regarding the lacks of taxonomic and funa studies about scorpions in Iran, this research has paid about the recognition of Ilam province scorpions, species frequency and geographically distribution. In this research first, Ilam province based on geography position, scorpion biting domain, climate and local researches divided to 14 region of sampling. By use of valid identifying keys such as Navid pour (2008), samples recognizes, frequency of scorpion species in each climate region has showed and their distribution map by use of GIS software has drawn. In Ilam province, among 390 hunted scorpion, 10 species include Hottentotta saulcyi (23.07), Mesobuthus eupeus (22.56), Compsobuthus matthiesseni (13.07), hemiscorpius lepturus (12.3), Orthochirus iranus (7.94), Razianus zarudnyi (4.87), Androctonus crassicaudata (4.1), Buthacus macrocentrus (3.33), Scorpio maurus (2.56), Odontobuthus bidentatus (1.02) scorpion identified.