@article{ author = {Asadi, M and AzariTakami, Q and Sajadi, M.M and Moezi, M and Niroomand, M}, title = {Effect of rotifers enriched with betaine and concentrated diet containing betaine on growth, survival and stress resistance of Indian white prawn (Fenneropenaeus indicus)}, abstract ={This study was conducted to investigate the effects of rotifers enriched with betaine and concentrated  diet  containing  betaine  on  growth  performance,  survival  and  resistance  to salinity (10 and 50ppt), temperature (42°C) and  formalin  (100ppm)  stresses  in  Indian  white prawn (Fenneropenaeus indicus) post-larvae. A complete  randomized  design  with  three replicates per treatment in nine 20-1 tanks was chosen.  Treatments  were:  Artemia  nauplii, rotifers and concentrated diet (control); Artemia nauplii, rotifers enriched with betaine and concentrated diet (treatment 1) and Artemia nauplii, rotifers enriched with  betaine  and concentrated  diet containing betaine  (0.8%) (treatment 2). The larvae were fed 6 times per day at 4h intervals. There were significant differences in growth and survival rate between the treatments containing betaine (treatment 1 and 2) and control treatment (P<0.05). Furthermore, the larvae that were fed with betaine (treatment 1 and 2) had significantly higher survival rate in stress resistance testes (P<0.05). The present study showed that betaine has positive effect on growth performance, survival rate and resistance to stresses in Indian white prawn.}, Keywords = {Rotifer, Feeding, Nauplii, Stress, Artemia}, volume = {19}, Number = {3}, pages = {1-10}, publisher = {IFSRI}, doi = {10.22092/ISFJ.2017.109951}, url = {http://isfj.ir/article-1-1710-en.html}, eprint = {http://isfj.ir/article-1-1710-en.pdf}, journal = {ISFJ}, issn = {1026-1354}, eissn = {2322-5998}, year = {2010} } @article{ author = {Seyfabadi, S.J and AminiKhooei, Z and Ramezanpour, Z}, title = {Effect of light intensity and photoperiod on growth rate and biomass of Chlorella vulgaris}, abstract ={This study provides information on the effect of three light intensities (37.5, 62.5 and lOO!lmol photons.m- 2 s-1) and photoperiods (light:dark) cycle 8:16, 12:12 and  16:8h  on growth rate, duplication time and biomass production  in microalga  Chiarella vulgaris. Stock of C. vulgaris was separated from water samples taken at Anzali Wetland,  purified  and cultured  in  lOOOml  Erlenmeyer  at constant temperature  25±0.5°C,  using Zehnder medium. Cell count was conducted daily and biomass was measured at the exponential growth phase in different treatments. Analysis of variance indicated  significant  difference  (P<0.05)  among light regimes. The maximum growth rate 1.13d-1 was observed at 10011mol photons.m- 2 s-1 and 16:8h light duration and also  the minimum duplication time 0.61d- 1 occurred at this treatment. The maximum biomass 2.05gr 1 was  recorded  at  62.5!lmol  photons.m -2  s-1  and 8:16h light period.}, Keywords = {Chlorella vulgaris, Photoperiod, Growth rate, early stock}, volume = {19}, Number = {3}, pages = {11-20}, publisher = {IFSRI}, doi = {10.22092/ISFJ.2017.109952}, url = {http://isfj.ir/article-1-1711-en.html}, eprint = {http://isfj.ir/article-1-1711-en.pdf}, journal = {ISFJ}, issn = {1026-1354}, eissn = {2322-5998}, year = {2010} } @article{ author = {Behzadi, S and Akbarzadeh, G.A and Salarpour, A and Darvishi, M}, title = {Study of grain size and organic carbon of sediments for artificial reef installation in coastal waters of Hormuzgan Province}, abstract ={Central and western coastal waters of the Persian Gulf along Hormuzgan province were investigated for site selection of artificial reefs installation. The grain size and organic carbon content of sediments were studied seasonally in the year 2007. For sampling, we stratified the area between the south of Qeshm Island to Hendorabi Island to 10 transects, and partitioned each to 3 sub-transects (Coastal line to 10, 10-20 and 20-30m deep), using a random design. The maximum and minimum amount of silt were recorded in transects of Bandar Haseineh and Bandar Chiroyeah (45.39% and 38.79%), for sand transects of Bandar Masen and Bandar Haseineh showed the maximum and minimum (63.95% and 38.79%) and for clay transects of Bahman Jetty and Bandar Masen (23.47% and 9.02%) were  recorded  and the highest  and lowest respectively. Also, the maximum and minimum amount of carbon organic content was determined in Bandar Kong transect (1.62%) and Hengum Island  transect  (0.63%), respectively. The results of one-way analysis of variance showed a significant difference in organic carbon content of sediments from transects of Hengum Island, Bandar  Masen  and Bandar Gourzeh in comparison with other transects (P<0.05), (95% confidence interval). However, the difference was not significant for grain size and organic carbon of bottom sediments in all stations (P>0.05). Also, we found a significant correlation  between silt (r = 0.52), sand (r = -0.63) and clay (r = 0.67) with organic carbon (P}, Keywords = {Artificial Reef, Ecosystem, Costal waters, Persian Gulf}, volume = {19}, Number = {3}, pages = {21-28}, publisher = {IFSRI}, doi = {10.22092/ISFJ.2017.109953}, url = {http://isfj.ir/article-1-1712-en.html}, eprint = {http://isfj.ir/article-1-1712-en.pdf}, journal = {ISFJ}, issn = {1026-1354}, eissn = {2322-5998}, year = {2010} } @article{ author = {Hafezieh, M and Hosseinpour, H}, title = {Using Artemia urmiana nauplii enriched with HUFA oils in Persian sturgeon (Acipenser persicus) larvae culture}, abstract ={We assessed the effects of Artemia urmiana nauplii as fish food enriched with different oils on growth and survival rate of Persian sturgeon (Acipenser persicus) larvae. Sturgeon ovary oil, cod liver oil, linseed oil and a commercial emulsion (ICES, Belgium Brand)  in three levels (100, 200 and 300ppm) for two periods of 12 and 24h were used for enrichment of A. urmiana nauplii fed to Persian sturgeon larvae during 20 days. Length, weight, SGR, CF, FCR and biochemical analyses including fatty acid profiles, total lipid and protein were measured for sturgeon larvae. Maximum length (43.9±2.3mm), DW (34.9±8.7mg), and minimum FCR (1.15±0.21) for sturgeon treatment  12h-200ppm, maximum  SGR (13.4±0.6) for sturgeon treatment 12h-300ppm, CF (0.47±0.03)  for linseed treatment 12h-300pprn and ICES 12h-300ppm (0.47±0.05), survival (94.1±0.2%) for ICES 24h-200pprn, protein content (70.05%) for ICES 12h-200ppm, lipid (21.14%) for sturgeon ovary oil treatment 24h- 300ppm, Arachidonic acid (ARA) ( 1.54±0.22mg.g OW) for cod liver oil treatment 24h- 300ppm, EPA (3.53±0.36mg.g OW) for cod liver oil 24h-100ppm, and OHA (3.22 ±0.09mg.g OW) for ICES and linseed treatments 24h-200ppm were obtained. DHA/EPA ratio in sturgeon larvae before active feeding was 1.75 which showed no significant difference compared to ICES in two levels (24h-100 and 200ppm) and linseed in two levels (24h-100 and 200ppm). ANOVA of different treatments showed significant differences between length, CF, survival rate, total lipid, ARA, EPA, and DHA contents of the sturgeon larvae among treatments (P<0.05).}, Keywords = {Enrichment, Oily seed, HUFA oils, Feeding}, volume = {19}, Number = {3}, pages = {29-40}, publisher = {IFSRI}, doi = {10.22092/ISFJ.2017.109954}, url = {http://isfj.ir/article-1-1713-en.html}, eprint = {http://isfj.ir/article-1-1713-en.pdf}, journal = {ISFJ}, issn = {1026-1354}, eissn = {2322-5998}, year = {2010} }