OTHERS_CITABLE Identification of identification of Hepatopancreatic Parvo-like Virus (HPV) in cultured Penaeus semisulcatus from the Islamic Republic of Iran During the period from August 1997 to March 1998, two thousand samples of cultured Penaeus semisulcatus postlarvae and subadults were collected from five hatcheries and 20 growout farms distributed in three provinces along the costs of Persian Gulf and the Oman Sea. Based on growth signs, LM and TEM histopathology, Hepatopancreatic Parvo-like Virus (HPV) were identified from the samples. The HPV particles most often appeared in spherical, but occasionally in angular forms. The particles in hepatopancreatocyte sections, averaged 22-24nm in diameter.  http://jifro.ir/article-1-3133-en.pdf 2017-12-11 1 18 Shrimp Penaeus semisulcatus Hepatopancreatic Parvo-like Virus Histopathology TEM observation M. Afsharnasab mafsharnasab@yahoo.com 1 AUTHOR M. Shariff 2 AUTHOR M.D. Hassan 3 AUTHOR Y.G. Wang 4 AUTHOR
OTHERS_CITABLE Occurance of Gyrodactylus spp (Monogenea: Gyrodactylidae) from Iranian freshwater fishes Thirty three Gyrodactylus spp have been found on the gills and body surface of both wild and farmed freshwater fishes in Iran. Among them nine species have been identified up to the species level, which are new locality records. The identification of the others, mainly belong to endemic wild freshwater fishes, need further studies. Among the known species, Gyrodactylus derjavini (Mikhailov, 1975) has been found on the gills, caudal and anal fins of the Caspian salmon (Salmo trutta caspius) and rainbow trout (Oncorhynchus mykiss). These species are very harmful to salmonid fingerling production industry of Iran. In warm water cultured fishes, G. sprostona, with widest host range, infects common carp (Cyprinus carpio), Silver carp (Hypophthalmichthys molitrix) and big head carp (Aristichthys nobilis) in almost all fish farms of Iran. Other species, which will be discussed here from their economic importance and host specificity points of view, are G. cyprini, G, elegans, G, fossilis, G. kobayashii, G. prostae, G. shulmani and G. stankovici. Furthermore the pathogenecity of Gyrodactylus spp are discussed and new technology (DNA sequence) for precise identification of parasites is also recommended.   http://jifro.ir/article-1-3134-en.pdf 2017-12-11 19 30 Gyrodactylus spp Freshwater fishes Iran B. Jalali behiar_jalali@yahoo.com 1 AUTHOR Sh. Shamsi 2 AUTHOR M. Barzegar 3 AUTHOR
OTHERS_CITABLE Protozoan from freshwater fishes from North West of Iran During a parasitological investigation on the fresh water fishes of North West of Iran (West Azerbaijan Province), 266 specimens of 11 fishes were examined. Fishes were collected from seven stations from Aras, Zangbar and Sarysou Rivers between summer 2001 to summer 2002. Nine protozoan species were detected; eight Cilliophora and one Rhizopoda. Cilliophora are: Chilodonella sp., Apiosoma sp.,Vorticella sp. Ichthyophthirius multifiliis, Trichodina perphorata, Amphileptus branchiarum, Tetrahymena pyriformis, Stylonchia pustulata, and the Rhizopoda species is Arcella vulgaris. Results show that five of those species are for the first time being reported from Iranian fresh water fishes.  http://jifro.ir/article-1-3135-en.pdf 2017-12-11 31 42 Protozoan Cilliophora Rhizopoda West Azerbaijan Porvince Iran M. Masoumian ifro_masoumian@yahoo.com 1 AUTHOR J. Pazouki 2 AUTHOR M. Yahyazadeh 3 AUTHOR A. Teymornezhad 4 AUTHOR
OTHERS_CITABLE Mortality of wild golden grey mullet (Liza auratus) in Iranian waters of the Caspian Sea, associated with viral nervous necrosis-like agent An acute mortality caused by an uncertain agent occurred in wild golden grey mullet (Liza auratus) population in the Iranian side of the Caspian Sea in February, 2004. Clinical signs of the moribund fish were erratic behavior such as spiral swimming, belly-up at rest and over inflation of swim bladder. Histological examination of brain of dead fish revealed hyperaemia, degeneration and necrosis in external granular layers as well as focal extension in intestine. Severe leucopenia was also observed. No putative causal factors were suggested by bacteriological, parasitological or environmental examinations. In virological examina-tions, however brains of affected golden grey mullet were positive in the reverse transcriptase-polymerase chain reaction test for piscine nodavirus (Nodaviridae, Betanodavirus), the causative agent of Encephalopathy and retinopathy (VER), otherwise known as viral nervous necrosis (VNN) in a variety of cultured marine fishes worldwide. Nucleotide sequence of the PCR amplicons is closely related with the coat protein gene of piscine nodaviruses, particularly redspotted grouper nervous necrosis virus (RGNNV). Although, it was not succeeded to isolate the virus, experimental infection with the brain homogenates of the affected fish in sevenband grouper (Epinephelus septemfasciatus), which is highly susceptible to RGNNV, produced neuro- logical abnormality followed by mortality. These results suggest that the mortality observed in golden grey mullet in the Caspian Sea might have been associated with piscine nodavirus infection.  http://jifro.ir/article-1-3136-en.pdf 2017-12-11 43 58 Golden grey mullet VER VNN Nodavirus PCR Caspian Sea IRAN M.J. Zorriehzahra zorrieh@yahoo.com 1 AUTHOR T. Nakai 2 AUTHOR I. Sharifpour 3 AUTHOR D. Kaw Gomez 4 AUTHOR C. Shau-Chi 5 AUTHOR M. Soltani 6 AUTHOR H. Hj. Mohd Daud 7 AUTHOR M. Sharif Rouhani 8 AUTHOR A.A. Saeidi 9 AUTHOR
OTHERS_CITABLE Effects of different levels of protein, energy and their interaction on growth factors of Indian shrimp (Fenneropenaeus indicus) of different sizes Three experiments of 28 days duration were conducted in three size groups (<1g, 1-5g and 5-10g) of Indian white shrimp, Fenneropenaeus indicus, to evaluate the appropriate protein: energy (GE) ratios in their diets. A common ingredient mixture consisting of fish meal, shrimp meal, ground nut oil cake, cholesterol, lecithin, vitamins and minerals blended with chicken egg albumin, tapioca flour and cellulose (filler) to formulate nine feeds with protein levels of 35%, 40% and 45% and GE levels of 380, 420 and 460 kcal/100g at each level of protein (i.e:35:380, 35:420, 35:460; 40:380, 40:420, 40:460 and 45:380, 45:420 and 45:460). Nutritional responses in terms of weight gain (g/individual), RGR, FCR, FCE, PER and PPV indicated that the protein: GE combination of 45:460 to be best in samples of  £lg size. Since weight increases were progressive, without indicating an optimum in this group of animals, protein levels beyond 45% needs to be explored.  In the size group of 1-5g the protein: GE combination of 40:420 was found to be appropriate, indicating a decline in the requirement of protein and energy as growth progresses. In the size group of 5-10g, a further decline in the protein: GE combination was observed with the protein: GE combination of 35:380 performing the best among the levels tested. In this size group a protein level lower than 35% has to be investigated. The findings reported are discussed in the light of relevant reports.  http://jifro.ir/article-1-3137-en.pdf 2017-12-11 59 80 Fenneropenaeus indicus Protein Energy ration Growth performances Nutritional response H. Alaf Noveyrian hamidnav@yahoo.com 1 AUTHOR P. Vijaya Gopal 2 AUTHOR
OTHERS_CITABLE Using computer assisted sperm analysis (CASA) to monitoring the effects of zinc and Cadmium pollution on fish sperm Since the quality of sperm is affected by water industrial or agriculture pollution, sperm motility was measured as a sensitive and accurate bioindicator of water quality. In this study, sperm motility was measured by a computer assisted sperm analysis after 24 hours exposure of sperm to different concentration of heavy metals) Cadmium and Zinc). The results show that the sperm motility was not related to the duration of exposure but to the metals concentration ration. The concentration of 1000ppm zinc or 2000ppm Cadmium could have adverse effect on sperm motility.  http://jifro.ir/article-1-3138-en.pdf 2017-12-11 81 100 Sperm motility CASA Heavy metals Pollution M. Ebrahimi ebrahimi@qom.ac.ir 1 AUTHOR
OTHERS_CITABLE Biomass distribution and pattern of myctophids in the Oman Sea In conformity with programming to harvest from virgin resources of Myctophids (Benthosema pterotum) in the Oman Sea (Iranian waters), a series of research cruises and trial fishings were carried out from 1992 to 1998. Assessment of B. pterotum stocks was carried out using the data obtained from a series of seven cruises conducted by R/V Ferdows1 in the Iranian waters using modern scientific echo sounder of EK500 system in 1993-94, with complementary monitoring surveys in the following years. The biomass estimates ranged from 1 to 4 million tones with an average of 2.3 million tons. A number of fishing operations using mid-water trawls were also performed in 1994-1998 using the same vessel. Distribution of B. pterotum was found to be all around the Oman Sea. The dense schools of this species were found in the northwest areas of the Iranian waters. Also the F/V Jahad Fanoos was applied during 1994-95 to do some trial fishings and its maximum catch was 50 t /h.  http://jifro.ir/article-1-3139-en.pdf 2017-12-11 101 110 Myctophids Benthosema Biomass Distribution Oman Sea Iran T. Valinasab t_valinassab@yahoo.com 1 AUTHOR