Effects of Different Level Administration of Bacillus subtilis and Bacillus licheniformis on Growth Performance and Survival Rate of Artemia urmiana
H. R.
Ahmadnia Motlagh
گروه شیلات دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران
author
M.
Farhangi
گروه شیلات دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران
author
G.
Rafiee
گروه شیلات دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران
author
F.
Noori
گروه شیلات دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران
author
text
article
2013
per
The probiotic effects of two gram positive bacteria, Bacillus subtilis and Bacillus licheniformis, were examined on growth performance, body composition and survival rate of Artemia urmiana. Three diets containing 102 (T1), 104 (T2), 106 (T3) CFU of probiotics g Feed-1 and a control diet (C) without probiotic were used through a completely randomized design (each with three replicates). The used bacteria increased significantly the dry weight and total length of artemia (P
Journal of Fisheries
دانشکده منابع طبیعی دانشگاه تهران
2008-5729
65
v.
4
no.
2013
353
364
https://jfisheries.ut.ac.ir/article_30539_1f8c846ee74d2b5e84b09933e5e18873.pdf
dx.doi.org/10.22059/jfisheries.2013.30539
Study of Proteases (Gastric, Intestine and Pancreas) Enzyme Activities of Rainbow Trout, Oncorhynchus Mykiss, Fed Partial Substitution of Dietary Fish Meal with Rice Bran Protein concentrate
N.
Ahmadi Fard
دانشکده علوم دریایی دانشگاه تربیت مدرس، نور، مازندران
author
A.
Abedian Kenari
گروه شیلات دانشکده علوم دریایی دانشگاه تربیت مدرس، نور، مازندران
author
A.
Motamedzadegan
گروه صنایع غذایی دانشگاه کشاورزی و منابع طبیعی ساری، ساری، مازندران
author
text
article
2013
per
Consistent composition of high quality diets is extremely important for aquaculture. Digestion and absorption of the nutrients depend directly on activity of digestive enzymes, in particular the protease enzymes in carnivores. The present study investigated the effects of substituting fish meal (FM) with rice bran protein concentrate (RBPC) on digestive enzyme activity of rainbow trout (Oncorhynchus mykiss). The activities of gastric (pepsin), pancreatic (trypsin and chymotrypsin) and brush border intestine (alkalinephosphatase and amino peptidase) enzymes were examined in specimens that were fed the experimental diets, i.e. FM meal was replaced by RBPC at three levels (10, 25 and 35%). One diet that had no replacement was considered as control. In fish fed vegetable diets, there was no significant difference between groups fed RBPC and the control in the specific activity of gastric (pepsin) and pancreatic (Trypsin and Chymotrypsin) enzymes (P > 0.05). Results of intestine enzymes showed that there were significant differences between specimens in the control group and those received higher levels of replacement. The alkalinephosphatase (AP) activity was at the lowest level in RBPC-35 group. No significant difference was detected between the control and RBPC-10 groups in the activity of aminopeptidase (AM) but the activity decreased with increase of level of replacement. Reduced intestinal enzyme activity in high levels of replacement, despite the lack of significant difference between gastric and pancreatic enzymes activity, may be due to simpler protein structure of rice bran protein concentrate compared with that of the fish meal, or nutritional inhibitors may have reduced the activity of digestive enzymes. However, in spite of these differences in intestinal enzymes activity, there was no significant difference in growth characteristics of fishes between 25 % replacement and the control group. It seems that this species is able to adapt to partial substitution of fish meal by RBPC, however, the mechanism for compensating the decrease of specific activity in the enterocytes of rainbow trout is still needed to be investigated.
Journal of Fisheries
دانشکده منابع طبیعی دانشگاه تهران
2008-5729
65
v.
4
no.
2013
365
376
https://jfisheries.ut.ac.ir/article_30540_2ed588f16bb46a5c563e70a69c41b37b.pdf
dx.doi.org/10.22059/jfisheries.2013.30540
Effects of nonylphenol xenoestrogen on production and changes of plasma vitellogenin protein in Persian sturgeon as a Biomarker
S.
Jamshidi
گروه تکثیر و پرورش آبزیان، دانشکده علوم دریایی، دانشگاه تربیت مدرس، ایران
author
M. R.
Kalbassi
گروه تکثیر و پرورش آبزیان، دانشکده علوم دریایی، دانشگاه تربیت مدرس، ایران
author
M.
Sadeghizadeh
گروه ژنتیک، دانشکده علوم زیستی، دانشگاه تربیت مدرس، ایران
author
M. A.
Yazdani Sadati
مرکز بین اللمللی تحقیقات ماهیان خاویاری گیلان، ایران
author
text
article
2013
per
The present study demonstrated the effects of nonylphenol (xenoestrogen) on Persian sturgeon (Acipenser persicus) vitellogenin (VTG) protein changes and production. Identification, purification and changes of vitellogenin protein in sera of fish treated by 17-beta estradiol and different concentration of nonylphenol, were performed. Gel filtration of this protein demonstrated the actual size of vitelogenin is 420KD in the native form, but vitellogenin in denaturated polyacrylamide gel had the form of dimmer protein. Purified cleavage vitelloginin (lipovitelin), which obtained from protein of Persian sturgeon oocyte, injected to rabbit for polyclonal antibody production and polyclonal antibody tested with treated sera for vitellogenin production as a biomarker of xenoestrogen using Wester blotting and ELISA method. All groups treated with 10 and 100mg/kg concentration of nonylphenol had significant effect on VTG protein production (p< 0. 05) but the group received the lowest dose of nonylphenol (1mg/kg) showed no significant change in VTG protein production. These results further support the negative effect of xenoestrogen on Persian sturgeon, indicating that this index can be used as a biomarker of xenoestrogen in aquatic ecosystems.
Journal of Fisheries
دانشکده منابع طبیعی دانشگاه تهران
2008-5729
65
v.
4
no.
2013
377
388
https://jfisheries.ut.ac.ir/article_30541_e8076713f935b27906d1383e15cee81e.pdf
dx.doi.org/10.22059/jfisheries.2013.30541
Temporal Changes of Phytoplankton Communities in Surface Layers (0.5 m) of the Zerebar Lake
T.
Rahmani
دانشگاه تهران، دانشکده منابع طبیعی، گروه شیلات، کرج صندوق پستی 4314، ایران
author
H.
Poorbagher
دانشگاه تهران، دانشکده منابع طبیعی، گروه شیلات، کرج صندوق پستی 4314، ایران
author
A.
Javanshir Khooie
دانشگاه تهران، دانشکده منابع طبیعی، گروه شیلات، کرج صندوق پستی 4314، ایران
author
B.
Bahrami Kamangar
دانشگاه کردستان، دانشکده منابع طبیعی، گروه شیلات ، سنندج، 416، ایران
author
text
article
2013
per
Assessment of biodiversity and providing phytoplankton checklist of a water body can be used in all subsequent studies. Such studies provide information on physical, chemical and biological conditions of aquatic ecosystems. The present study aimed to provide a phytoplankton checklist for the Zerebar Lake (Kurdistan province, Iran) and also investigate the distribution of phytoplankton community at different months. Sampling was carried out every two months from September 2010 to July 2011 in three different parts of the lake. A total number of 53 genera of phytoplankton were identified belonged to 9 classes and 14 orders. Genus richness and Shannon-Weiner indices indicated that the Zerebar Lake had high phytoplankton diversity. Cyanobacteria (the genera Lyngbya, Cylindrospermopsis and Microcystis) in September and November, diatoms (the genera Synedra and Cyclotella) in other months, green algae (the genera Chlorella and Scenedesmus) in March and July and Chrysophyceae from the genera Gonyostomum in May and July and the genus Dinobryon in January constituted the major parts of phytoplankton communities. The present genera indicate high concentrations of nutrients in the lake. A further study using phytoplankton species is needed to depict clearer image of phytoplankton community in the Zerebar Lake.
Journal of Fisheries
دانشکده منابع طبیعی دانشگاه تهران
2008-5729
65
v.
4
no.
2013
389
398
https://jfisheries.ut.ac.ir/article_30542_6bf1237f9f9d79b6a9d88e04adfc9d4f.pdf
dx.doi.org/10.22059/jfisheries.2013.30542
Effects of Dietary Nucleotides on Amino Acid Profile of Rainbow Trout (Oncorhynchus mykiss) Muscle
N.
Salami Khorshidi
گروه شیلات، دانشکده منابع طبیعی دریا، دانشگاه علوم و فنون دریایی خرمشهر، ایران
author
S.
Keyvanshokooh
گروه شیلات، دانشکده منابع طبیعی دریا، دانشگاه علوم و فنون دریایی خرمشهر، ایران
author
A. P.
Salati
گروه شیلات، دانشکده منابع طبیعی دریا، دانشگاه علوم و فنون دریایی خرمشهر، ایران
author
M.
Zakeri
گروه شیلات، دانشکده منابع طبیعی دریا، دانشگاه علوم و فنون دریایی خرمشهر، ایران
author
N.
Mahmoudi
گروه شیلات، دانشکده علوم دریایی، دانشگاه تربیت مدرس، ایران
author
A.
Tahmasebi-Kohyani
گروه شیلات، دانشکده منابع طبیعی دریا، دانشگاه علوم و فنون دریایی خرمشهر، ایران
author
text
article
2013
per
Effects of different levels of dietary nucleotides (NT) were studied on muscle amino acid profile of rain bow trout with an average weight 11.35±0.32 over 8 weeks. This experimental was carried out in 700 L circular tanks with 40 fish per tank. NT was added to the diet at the rates of 0.0, 0.05, 0.1, 0.15 and 0.2%. Fish were fed 5 times a day at a rate of 3-5% body weight. After 8 weeks of feeding, the fish fed 0.2% NT showed higher SGR and WG (%) compared to the control group. No significant differences were observed in fish fed 0.2% NT compared to the fish fed 0.15% NT. The results showed that dietary supplementation of NT has significant effect on His, Arg, Thr, Val, Ilu, Leu, Phe, Lys, Glu, Ser, Gly, Tyr+Phe, TEAA and TNEAA. In fish fed 0.2% NT, total essential amino acid (EAA) content was significantly higher among the experimental groups.
Journal of Fisheries
دانشکده منابع طبیعی دانشگاه تهران
2008-5729
65
v.
4
no.
2013
399
408
https://jfisheries.ut.ac.ir/article_30543_a6f76af33e37797edeaab4648d84d5f0.pdf
dx.doi.org/10.22059/jfisheries.2013.30543
The Relationship between gonadal and blood serum biochemical parameters in bloodstocks of the Caspian lamprey, Caspiomyzon wagneri Kessler 1870
M.
Abdollahi
دانش آموخته کارشناسی ارشد شیلات، دانشگاه تربیت مدرس
author
M.R.
Farokhnejad
دانشجوی کارشناسی ارشد شیلات، دانشگاه تهران
author
M.
Monajjemi
دانشجوی کارشناسی ارشد شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
P.
Raoufi
دانشجوی کارشناسی ارشد شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
M.R.
Imanpoor
دانشیار شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
text
article
2013
per
Environmental pollutions and deterioration of spawning grounds have threatened the Caspian lamprey. These problems have led to the need for special protection of the species in many localities, nevertheless, there is surprisingly few information about the physiology of Caspian Lamprey. Thus, the present study aimed to evaluate the correlations between blood serum biochemical parameters and gonadal parameters in the Caspian lamprey to investigate its physiology during its final migration. There was a positive correlation between magnesium (r = 0.88, P < 0.01), calcium (r = 0.72, P < 0.05), and phosphorus (r = 0.77, P < 0.05) concentration with GSI in the females but an inverse correlation was observed between magnesium (r = -0.73, P < 0.05) with GSI in males. Also, there was a significant correlation between total protein (r = 0.885,
P < 0.05), cholesterol (r = 0.77, P < 0.05), and glucose (r = 0.77, P < 0.05) in serum blood with GSI of females. The observed correlations may be attributed to the exceptional characteristics of C. wagneri which does not feed during migration and uses reserved protein and fat of the muscles.
Journal of Fisheries
دانشکده منابع طبیعی دانشگاه تهران
2008-5729
65
v.
4
no.
2013
409
420
https://jfisheries.ut.ac.ir/article_30544_9e113cf18aac6a540d313441d812d700.pdf
dx.doi.org/10.22059/jfisheries.2013.30544
Comparison of Some Biological Factors of Boleophthalmus dussumieri in Hormozgan and Bushehr Provinces
L.
Abdoli
گروه شیلات دانشگاه هرمزگان، ایران
author
E.
Kamrani
گروه زیست شناسی دانشکده علوم پایه دانشگاه هرمزگان، ایران
author
A.
Abdoli
پژوهشکده علوم محیطی، دانشگاه شهید بهشتی، ایران
author
B.
Kiabi
دانشکده علوم زیستی، دانشگاه شهید بهشتی، ایران
author
E.
Rezazadeh Katehsari
دانشکده کشاورزی و منابع طبیعی دانشگاه هرمزگان
author
text
article
2013
per
A study was conducted to determine some biological characteristics of a mudskipper (Boleophthalmus dussumieri) such as length, weight frequencies, condition factor and growth parameters of von Bertallanfy in the provinces neighboring to the Persian Gulf, i.e. Bushehr and Hormozgan, from January 2007 to April 2008.The sampling were carried out using a hand net as well as bare hands. 333 specimens were collected in the provinces (164 from Hormozgan, 169 from Bushehr). The largest male and female samples were caught with the 280 and 283.4 mm from Bushehr province, respectively. There was no significant differences in sex ratios of the two populations (P>0.05). In both sexes, length frequencies of specimens from Bushehr had higher average values than those from Hormozgan. In both fish populations, the female’s condition factor was higher than the male’s condition factor, although the difference was not statistically significant (P>0.05). The age data, derived from radial pectoral fin. Five age groups were recognized for the Bushehr mudskippers. The most abundant ages were 1+ years. The age data were used to estimate the growth parameters of the Von Bertalanffy equation: Lt=301.9}1- exp [-0.41(t-2.02)]} for both sexes in Bushehr Province. Length and weight relationships between the two populations and the regression slope (b), which was very close to 3.00, indicated that in both provinces, the mudskippers have isometric growth. The relative gut length of 1.699 indicates that both populations are herbivore in their feeding habits.
Journal of Fisheries
دانشکده منابع طبیعی دانشگاه تهران
2008-5729
65
v.
4
no.
2013
421
428
https://jfisheries.ut.ac.ir/article_30545_1c8638d0ae4c184a308c2a2c03f32327.pdf
dx.doi.org/10.22059/jfisheries.2013.30545
A Study on the Effect of Dry Salting on Fatty Acids of Silver Carp (Hypophthalmichthys molitrix) and the Shelf Life under the Environmental Condition
S.
Moini
گروه علوم مهندسی غذایی، دانشکده مهندسی بیوسیستم، دانشگاه تهران، ایران
author
M.
Rafie
دانشگاه علوم و فنون دریایی واحد تهران شمال، ایران
author
P.
Ghazvini
دانشگاه علوم و فنون دریایی واحد تهران شمال، ایران
author
S.
Jalili
گروه شیلات، واحد آبادان، دانشگاه آزاد اسلامی، آبادان، ایران
author
text
article
2013
per
The fatty acids profile of fresh and dry salted flesh of Hypophthalmichthys molitrix were identified and effects of the dry salting on them were investigated. In addition, the shelf life of dry salted of the fish was found under the environmental conditions (25-28°C). The profile of fatty acids in fresh and dry salted samples were identified and measured using a GC, equipped with a FID detector. The fatty acid content in fresh samples for SFA, MUFA and PUFA were 27.5 ± 0.2,
46.39 ± 0.5 and 26.11 ± 0.1%, respectively. During a 120-day storage, the percentage changes of dry salted samples were: For SFA (27.82 ± 0.7 to 33.69 ± 0.84), MUFA (46.77 ± 0.2 to 47.34 ± 0.1) and PUFA (24.92 ± 0.3 to 17.45 ± 0.2) which were statistically significant (P ? 0.05). During the 150 days of storage, under environmental condition, the peroxide changed from 3.08 ± 0.02 to
6.10 ± 0.02 and reached to 5.48 meq O2 kg-1. Also The TVB-N changed from 21 ± 0.3 mg/100 g to 51.8 ± 2 mg 100g-1 which was statistically significant (P ? 0.05). In conclusion, the shelf life of dry salted flesh of this fish predicted to be five months.
Journal of Fisheries
دانشکده منابع طبیعی دانشگاه تهران
2008-5729
65
v.
4
no.
2013
429
438
https://jfisheries.ut.ac.ir/article_30546_0057e97204472678e4d69efeed64f60a.pdf
dx.doi.org/10.22059/jfisheries.2013.30546
An analysis of the fish consumption in Isfahan
L.
Mosavi Dehmordi
گروه شیلات، دانشکده منابع طبیعی، دانشگاه صنعتی خاتم الانبیا بهبهان
author
A.
Famil Mohamadi
گروه شیلات، دانشکده منابع طبیعی، دانشگاه صنعتی خاتم الانبیا بهبهان
author
A.
Behdani
گروه شیلات، دانشکده منابع طبیعی، دانشگاه صنعتی خاتم الانبیا بهبهان
author
text
article
2013
per
A questionnaire study was conducted to find the effective parameters in behavior of consumption of fishery products in Isfahan city in 2011. A total of 386 families were selected randomly. A significant correlation between parameters was examined using the Spearman and Hydo test. Results showed that the per capita consumption in this city is 8 Kg and the Isfahani families’ tendency for consumption of fishery products was in the order of salt water fish, canned fish and shrimp. The quality and freshness, price, packaging and odor had the most important role in making decision to buy the seafood. About 40% Isfahani families preferred to buy the packed seafood products. There were significant relationships between the consumption of aquatic products and presence of seafood chain stores, monthly income, familiarity with different recipes of seafood, season, awareness of health-related seafood benefits and availability of ready-to- eat fishes.
Journal of Fisheries
دانشکده منابع طبیعی دانشگاه تهران
2008-5729
65
v.
4
no.
2013
439
446
https://jfisheries.ut.ac.ir/article_30547_b0e384bd9a1a3ebf52989c284d0705f1.pdf
dx.doi.org/10.22059/jfisheries.2013.30547
Effects of Long Light Photoperiods on the Delay of Gonadal Development in Female Rainbow Trout (Oncorhynchus mykiss): 1. Structural Changes
A.
Noori
1گروه شیلات، دانشکده علوم و فنون دریایی، دانشگاه هرمزگان، بندر عباس، ایران، صندوق پستی 3995
author
B.
Mojazi Amiri
گروه شیلات، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران، صندوق پستی 4314-31585
author
A.
Mirvaghefi
گروه شیلات، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران، صندوق پستی 4314-31585
author
B.
Kalvani Neitali
دانشکده علوم دریایی، دانشگاه تربیت مدرس، نور، مازندران، صندوق پستی: 356-46414
author
text
article
2013
per
Effects of two long-light photoperiod regimes on oocyte development and structural changes in female rainbow trout ovary were investigated. Two-years old females with a mean initial weight of 279.94 ± 2.25 g were subjected to 24L:0D and 18L:6D as long light photoperiods and also natural photoperiod (as control) for 5 months. Fish were fed formulated pellet food from a local factory in 2% BW daily. The oocytes of control group were significantly larger than those of the other groups (P< 0.05) with a mean diameter of 2.34 ± 0.07 mm (mean ± SE). Application of 24L:0D and 18L:6D caused the lowest development in follicular layer compared to the control group. The number of granulose cells were 349 ± 21 and 406 ± 23 in 24L: 0D and 18L:6D, respectively, which were significantly lower (P
Journal of Fisheries
دانشکده منابع طبیعی دانشگاه تهران
2008-5729
65
v.
4
no.
2013
447
456
https://jfisheries.ut.ac.ir/article_30548_063ea84b2afbfda0b116a656538531c3.pdf
dx.doi.org/10.22059/jfisheries.2013.30548
Muscle and Liver in Five Species Endemic Fishes from Khoozestan Province
M.
Velayatzadeh
دانشگاه آزاد اسلامی واحد اهواز، باشگاه پژوهشگران جوان، اهواز، ایران
author
A.
Askary Sary
گروه شیلات، دانشکده کشاورزی و منابع طبیعی، دانشگاه آزاد اسلامی واحد اهواز، ایران
author
text
article
2013
per
Concentration of As in the muscle and liver of Aspius vorax, Cyprinion macrostomus, Barbus luteus in Karoon River and Liza klunzingeri and Liza macrolepis from Hendijan Port, Persian Gulf, were investigated in 2011. In this study, 30 samples of fish were collected in winter. Metals were extracted from the tissues using wet the digestion method and concentration of the heavy metals were measured by an Atomic Absorption Spectrophotometer Perkin Elmer 4100. Data were analyzed using one away ANOVA. The highest concentration of As in the liver of Liza klunzingeri was 155.33±9.6 µg kg-1 dw. Also the lowest concentration of this element in muscle of Cyprinion macrostomus was 73.90±0.65 µg kg-1 dw. There was no significant difference in concentration of As in the muscle and liver tissues of Aspius vorax, Cyprinion macrostomus, Barbus luteus, but there was a significant difference in As of two species Liza klunzingeri and Liza macrolepis. Also there was a significant difference between marine and freshwater species. Concentration of As was lower than those of NHMRC and FAO standards.
Journal of Fisheries
دانشکده منابع طبیعی دانشگاه تهران
2008-5729
65
v.
4
no.
2013
457
461
https://jfisheries.ut.ac.ir/article_30549_31d23cb23aa8c5bf5446474c9d0bf056.pdf
dx.doi.org/10.22059/jfisheries.2013.30549