List of Articles شدت آلودگی

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - 4
  مرجانه خراط صادقی عبدالرضا کرباسی
  4

  4 Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - بررسی میزان شیوع، تغییرات فصلی و شدت آلودگی به دیکروسلیازیس در نشخوارکنندگان کوچک بومی آذربایجان شرقی
  یعقوب فیروزی وند علی اسلامی سعید بکایی
  Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - Effect of salicylic acid treatment on common bean mosaic virus damage in bean variety Akhtar
  Sasan Ghasemi Adeleh Abedi Firoozjaei
  Bean common mosaic virus and related races are one of the most important bean viral diseases and are present in almost all bean growing regions. In order to investigate the effects of salicylic acid treatment on the reaction of sensitive bean variety (Akhtar) to common More

  Bean common mosaic virus and related races are one of the most important bean viral diseases and are present in almost all bean growing regions. In order to investigate the effects of salicylic acid treatment on the reaction of sensitive bean variety (Akhtar) to common bean mosaic virus (BCMV), an experiment was conducted in the form of a completely randomized design with 4 replications in greenhouse conditions. The experimental treatments included concentrations of zero, 200, 400 and 800 micromolar salicylic acid. The desired treatments were performed three days before inoculation with the respective virus agent. ELISA test using BCMV antiserum showed 83.3% of samples were infected with this virus. The results showed that different levels of salicylic acid could reduce the severity of the disease compared to the control infected with the virus.The lowest severity of the disease was obtained in the treatment of salicylic acid with a concentration of 800 micromolar (15.5%). The amount of phenol in the leaves in the treatment of salicylic acid with a concentration of 800 micromolar showed the highest value (92%), which did not show a statistically significant difference with the infected control, and this trait can be an indicator of the induction of resistance with the improvement of phenol levels due to the use of salicylic acid. Salicylic acid was effective in improving the morphological parameters such as the wet weight of the aerial parts of the plant and the dry weight of the root, and in disease conditions it prevented further damage during the experimental period to such an extent that this amount in the treatment of salicylic acid with a concentration of 800 µM in the conditions of the disease did not show any significant difference with the healthy control. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  4 - Ligula intestinalis (Cestoda: Pseudophyllidea) plerocercoids in Alburnoides eichwaldi from Alborz Dam reservoir: population dynamics and histopathological study
  Abbas Bozorgnia
  Abstract The aim of this study was to determine the prevalence and intensity of Ligula intestinalis infection in Alburnoides eichwaldi from the Alborz dam reservoir, and investigation the histopathology of infected organs. Accordingly, 36 fish samples were caught. After More

  Abstract The aim of this study was to determine the prevalence and intensity of Ligula intestinalis infection in Alburnoides eichwaldi from the Alborz dam reservoir, and investigation the histopathology of infected organs. Accordingly, 36 fish samples were caught. After being anesthetized, the biometric indices of fish samples were measured and examined for parasites. The tissue samples of gonads, kidney, liver and intestine were taken from parasite-infected fish to examine pathologically. Excel software was used to draw graphs and basic statistical calculations, and SPSS software version 26 was used to perform analyzes and compare means. The findings of statistical analysis indicated that the mean prevalence of Ligula intestinalis infection was 75% and the mean intensity was 0.95±0.7. Also, a significant difference (p<0.05) was observed between the total length of the fish and the total number of plerocercoid larvae found in each fish. Also, the linear regression analysis between the net weight of fish and the mean intensity of infection demonstrated a significant relationship (p<0.05) between the variables. The histopathological survey revealed that the physical pressures caused by plerocercoid larvae induced the oocyte envelope to rupture and degenerate the component of oocytes, while in the testis led to the loss of structural organization and the reduction of spermatids and spermatozoa inside the seminiferous tubes. Also, plerocercoid larvae cause vacuolar degeneration, edema, and cell infiltration in the liver along with hyperplasia of the bile ducts. Whereas, hyperplasia and destruction of the epithelial layer were seen in the intestine. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  5 - Investigation of the prevalence and intesity of parasitic infection in Rhodeus sericeus amarus of the Zardi River (Mazandaran)
  M. Taghavi B. Mokhayer A.A. Saeedi S.H. Mosavi
  A total of 59 specimens of Rhodeus  sericeus amarus  are  caught by handnet from two different station of Zardi River in the south-eastern costal of Caspian sea at the autumn and winter of 2009 and spring of 2010 . The fishes were transported alive to the More

  A total of 59 specimens of Rhodeus  sericeus amarus  are  caught by handnet from two different station of Zardi River in the south-eastern costal of Caspian sea at the autumn and winter of 2009 and spring of 2010 . The fishes were transported alive to the laboratory of Shahid Rajaee site. They killed by cutting their spinal cord and then measured and weighed.The eye ,skin,gill,digestive system,muscle and the other organism´s of the specimens were examined for parasite infestation. Six parasites species were identified.These parasites are as following:  Trichodina sp. from skin and branchia, Dactylogyrus sp. from branchia, Gyrodactylus sp. from skin and branchia, Diplostomum spathaceum from eye s, Postodiplostomum sp. from skin, Capillaria amurensis from intestine were found in the Rhodeus  sericeus amarus  of Zardi River.The most prevalent parasite was Trichodina sp. (49/15%) and the least was Diplostomum spathaceum(13/55%) Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  6 - A Study on parasites of Clupeonella grimmi in Caspian Sea
  H. Jeddy B. Mokhayer A. Khajeh Rahimi
  During this survey from February until November 2011 in four seasons (winter, spring, summer, fall), 252 speciemen of Clupeonella grimmi were sampled from Caspian Sea’s Babolsar fishing ground, in each sampling 63 fishes were examined and four species of parasite More

  During this survey from February until November 2011 in four seasons (winter, spring, summer, fall), 252 speciemen of Clupeonella grimmi were sampled from Caspian Sea’s Babolsar fishing ground, in each sampling 63 fishes were examined and four species of parasite were isolated from them. Parasites found were: Larvae of Contracaecum sp. and Larvae of Anisakis sp., Bunocotyle cingulata and Pseudopentagrama symmetrica. In this survey the percentage of infection and intensity of infection of parasites found have been expressed in C. grimmi in the Caspian Sea. During one year percentages of the above mentioned parasities were: 1.6, 0.4, 26.2 and 36.9 respectively and during one year the parasitic intensity of infections were: 1.25, 1, 2.6, 10.3 respectively.P. symmetrica parasite showed high percentage of infection among other parasites and second was B. cingulata (both of the Trematoda are non-zoonusen).Contracaecum sp. and Anisakis sp. are Nematoda and zoonusen,in terms of percentage and intensity of infection, among other parasites in C. grimmi fish, they were in next rank. P. symmetrica and B. cingulata parasites were found in all four seasons of the year but Contracaecum was just found in summer and also Anisakis sp. was only fount in fall.Among seasons of the year, summer with 88.9 percent, showed most percentage and winter with 22.22 percent, showed least percentage of contamination to in C. grimmi.Most infection rate was found in the parasites of the gastrointestinal tract and after that the abdominal organs and the gonads (testis). Other organs of fish under survey such as: eyes, gill, skin, swim blader, kidney were healthy and free of parasitic contamination.In this survey, none of common protozoan parasites were found in fish, therefore according to the findings of the present study the parasites found in C. grimmi didn't severely damage the fishes health and probably only caused reduced growth and have little impact on decline in fish populations. But existence of parasites like Contracaecum sp. and Anisakis sp. inside the fish’s body, fish consumption must be with care in cooking and producing. Human feeding on fish infected with above mentioned parasites, can cause these parasites to grow in human body and can develop pathogenesis effects. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  7 - Prevalence and intensity of parasitic infection from (Leuciscus cephalus) and ( Capoeta capoeta gracilis) of the Neka River
  M. H. Gholami B. Mokhayer A. Bozorgnia H. Hosseinzadeh Sahafi
  A total of 200 specimen of two fish species from NekaRiver in the winter and summer, 2009 of two differnt stations were caught by castnet. The fishes were transported alive to laberatory of Islamic Azad University of Ghaemshahr. They killed by cutting their spinal cord More

  A total of 200 specimen of two fish species from NekaRiver in the winter and summer, 2009 of two differnt stations were caught by castnet. The fishes were transported alive to laberatory of Islamic Azad University of Ghaemshahr. They killed by cutting their spinal cord and then measured and weighed. We found one protozoan species, Ichthyophthirius multifiliis on the branchia of Cacasian (Leuciscus cephalus) and Lenkoran (Capoeta capoeta gracilis). The isolated metazoan parasites are Dactylogyrus sp. and Diplozoon sp. from branchia, Gyrodactylus sp. from skin and the nematod Raphidascaris acus from intestine of the mentioned fishes. In this study, 39.58% of Cacasian and 45.19% of Lenkoran were infected with protozoan and metazoan parasites. Dactylogyrus sp. has the highest prevalence and intensity of parasitic infection of these fishes. According to the library investigations, Diplozoone sp. is recorded for the first time from cacasian, of  Iran. Manuscript profile