مجله پژوهشهای جانوری (زیست شناسی ایران)
سال سی و چهارم شماره 3 (پاییز 1400)

Increased use of silver nanoparticles in consumer products may have beneficial or detrimental effects on the structure of the human body and living organisms Since one of the target organs of silver nanoparticles in living organisms is the kidney, the kidney plays a key role in clearing the body of waste products and regulating homeostasis. The aim of this study was to investigate the effect of royal jelly on rat kidney tissue following the toxicity of silver nanoparticles.

24 adult NMRI mice were divided into 4 groups: control, silver nanoparticles (500 mg /Kg/day, gavage), royal jelly (300 mg /Kg/day, gavage) and silver nanoparticles with royal gel and treated for 35 days. Kidney tissue was evaluated by stereologic methods. Biochemical parameters of malondialdehyde, urea, creatinine and total antioxidant activity were analyzed by FRAP method. Data were analyzed by one-way ANOVA and Tukey tests and the difference was considered significant (p

Brown bear (Ursus arctos) is a species with high distribution range in Kermanshah province and this has created precondition of conflict. The aim of this study is to identify key bear habitats, ecological Niche fluctuations, and their desirable habitat cover in protected areas and counties of the province. In this regard, after field surveys, the presence of species was identified for 3 years (from 2016 to 2018). Nine habitat variables including ecological, topographic and anthropogenic were used to investigate distribution status. Distribution modeling was performed using Maximum Entropy algorithm. The significance of variables in modeling was calculated by jack knife method and model validity was calculated by ROC function. Width quantification of ecological nests was also calculated using related metrics in ENMTOOLS software. TSS threshold was used to quantify habitat area. Based on the results, appropriate habitat coverage of the species by the protected areas is not suitable and this weakness is evident in the southern parts of the province so that area of 265842.84 hectares of species habitat is outside the protected areas boundary and is prone to conflict with other Land use/land cover. Among the protected areas of the province, Ghaleje and Buzin and Marakhil had the most cover of this an umbrella spices. About half of Paveh county (% 46.68) is suitable for species and the least suitable was located in Qasrshirin county. The results of this study necessitate more attention to the continuity and habitat coverage of this species in the southern parts of the province.

Diabetes or impairment in the secretion or function of insulin, in addition to increasing blood sugar, causes changes in blood lipid parameters. This study was designed and performed to investigate the effect of E. campestre extract on blood sugar levels and blood lipid indices in diabetic male rats. In this experimental study of adult male Wistar rats (200-250 gr) in five groups of 8 (n=8): 1) saline (control) 2) untreated diabetes (control) 3, 4 and 5) Diabetic patients treated with E. campestre extract (50, 100, 200 mg / kg) were used. Mice became intraperitoneally diabetic with STZ (60 mg/kg). On the fifth day after receiving STZ, animals with blood glucose above 200 mg/dL were considered diabetic. The control and witness groups received saline only and the treated diabetic groups received E. campestre extract by gavage for two weeks. Finally, after measuring blood glucose and deep anesthesia with ketamine / xylsin, blood samples were taken from the animal's heart and its serum was isolated to evaluate lipid parameter. Administration of different doses of E. campestre extract significantly reduced blood sugar (p<0.001), triglyceride (p<0.001) and VLDL (p<0.001) in treated diabetic rats, but LDL (p<0.001) Increased significantly. E. campestre extract significantly increased total cholesterol (p<0.05) at 100 mg/kg dose and HDL at 100 mg/kg (p<0.05) and 200 (p<0.001) doses. E. campestre extract, while lowering blood sugar, helped improve some impairment caused by diabetes in the lipid parameters.

Haloa natalensis (Krauss, 1848), one of the most important species of the genus Haloa Pilsbry, 1921, is widely distributed throughout the Indo-Pacific region. Populations of this species was observed in the November 2019 in the coastal waters of Bandar Abbas, Iran. There is no any description and illustration for this species from the area, except a name record in the previous study. Moreover, this genus has experienced a taxonomic re-arrangement based on new phylogenetic analyses. In this study, we examined the collected individuals and their morphological feature as well as their habitat were described and their phylogenetic position within species was addressed using the mitochondrial CO1 sequences. This is the first report of this species in the northern part of the Persian Gulf and also for the Iranian waters.Haloa natalensis (Krauss, 1848), one of the most important species of the genus Haloa Pilsbry, 1921, is widely distributed throughout the Indo-Pacific region. Populations of this species was observed in the November 2019 in the coastal waters of Bandar Abbas, Iran. There is no any description and illustration for this species from the area, except a name record in the previous study. Moreover, this genus has experienced a taxonomic re-arrangement based on new phylogenetic analyses. In this study, we examined the collected individuals and their morphological feature as well as their habitat were described and their phylogenetic position within species was addressed using the mitochondrial CO1 sequences.