Species identification of Sillaginid larvae (Perciformes: Sillaginidae) in the central creeks of Bushehr province â Persian Gulf using morphological and DNA barcoding mothods
M.
Amini
author
R.
Ghorbani
author
A.
Shabani
author
M.
Rabbaniha
author
M.
Noorinejad
author
R.
Naddafi
author
H.
Kolangi Miandare
author
text
article
2016
per
Sillaginids are one of the important fishes in coastal waters of Persian Gulf, whose larvae of different species are morphologically very similar to each other and identification of them to species level is very difficult. In this study a total of 4195 Sillaginidae larvae were collected from five inlets (Shif, Lashkari, Ramleh, Dubbeh, Farakeh) and one sampling site in the coastal area of Bushehr Province using a Bongo-net. Morphological and genetic methods were used to identity larvae of this family. The larvae were morphologically divided into two groups, depending on 34 or 38 myomers. The larvae with 34 myomeres were identified as Sillago sihama. To identify larvae with 38 myomers, 12 individuals of postflexion larvae were selected and the morphological characteristic such as number of dorsal and anal fins as well as DNA barcoding of COI were used. According to morphological characteristics, the larvae were divided into two species; Sillago arabica and Sillago attenuata. Genetic studies was done by sequencing of 625 base pair of COI gene. Genetic distances calculated using K2P model between these two species was 18% to 19.7% which indicate that DNA barcoding confirms morphological method and it can be used for identifying younger larvae whose fin rays have not been developed and are unidentifiable with morphological methods.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
1
9
https://isfj.areeo.ac.ir/article_110218_55c0730e249ca73ec2283c5bb3321d36.pdf
dx.doi.org/10.22092/isfj.2017.110218
Factors affecting the policyholders' satisfaction coldwater fish farmers of Mazandaran Province corresponding agricultural insurance
Gh.
Nouri
author
R.
Khoshsima
author
H.
Salehi
author
Sh.
Kakolaki
author
text
article
2016
per
The goal of this research was considering the reasons of policy holder satisfaction of breeding freshwater fish farms with agriculture insurance in Mazandaran province. The population of this research was the number of 63 freshwater fish breeders in Mazandaran province had assured their farms through Agricultural Insurance Fund during years 88 to 92 and they have utilized questionnaires for field data collection, its validity was approved by experts’ panel and its reliability was approved through utilization of Cronbach’s alpha coefficient (0.85). the variable " Agricultural Insurance Fund has considered on our complain on time" had more sound on satisfaction at the level of %30 followed by the variable " I am satisfied with specification and estimating damage of agricultural insurance" with the level of %28 and" the distance between damage and the time of compensation assessment by Insurance Fund is suitable " in level of %23 and" mangers and personnel attitude of Agricultural Insurance Fund is suitable" in level %20 are effective in measure of satisfaction. Obtained results from the research indicate that the main dissatisfaction of breeders had been about "becoming time-consuming between damage and compensation payment, being unsuitable and defective of specification and estimating compensation process, the way of considering on complain and demand of breeders and the way of managers and personnel of Agricultural Insurance Fund attitude and behavior.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
11
19
https://isfj.areeo.ac.ir/article_110219_c9a96cea23f46eaf048a63f1ef93b2f7.pdf
dx.doi.org/10.22092/isfj.2017.110219
Study on accumulation potential of zinc oxide nanoparticles in Artemia and its trophic transfer to Zebrafish (Danio rerio)
S. A.
Johari
author
Nemati
T.
author
Dekani
L.
author
text
article
2016
per
Although nanomaterials have broad applications in many fields including aquaculture, their release into the environment has raised some concerns in recent years. This study was conducted to investigate the possibility of enriching Artemia with zinc oxide nanoparticles (ZnO-NPs) for possible use in aquaculture on the one hand, and, on the other hand, to investigate the transfer of this material through the food chain and its accumulation in the body of zebrafish as an aquatic model. In order to evaluate the absorption and excretion of ZnO-NPs in Artemia, nauplii were exposed to concentrations of 1, 10 and 100 mg/L ZnO-NPs suspension for 24 hours and then placed in the nanoparticles-free water for another 24 hours. The zebrafish were then fed with ZnO-NPs enriched nauplii for 21 days, followed by feeding on nanoparticles-free nauplii for 7 days to determine trophic transfer as well as excretion of nanoparticles from the fish body. The accumulated zinc over the periods of absorption and excretion in nauplii and fish were measured using atomic absorption spectrophotometer. The results showed that Artemia nauplii had high potential for accumulation of ZnO-NPs, while accumulated zinc had high potential for transfer to fish. Based on the results, Artemia can be enriched with ZnO-NPs so that the needs of fish to zinc can be met. However, the risk of nanomaterials release into the aquatic ecosystems and their trophic transfer along the food chain should be considered
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
21
28
https://isfj.areeo.ac.ir/article_110220_efd1e4396abf9d01664b2cec0311df7a.pdf
dx.doi.org/10.22092/isfj.2017.110220
Evaluation of coliform bacteria and Nematode eggs in Haraz River runoff
Z.
Yaghoubzadeh
author
R.
Safari
author
text
article
2016
per
Haraz River is an important river in north of Iran. This river is one of the vital importances in Mazandaran province and cities of Amol, Babol, Fereidoon'kenar and Nour. This river is considered the largest and most beautiful tourist destinations of Mazandaran because it has the path and landscape of the mountainous and forest. This study was conducted for survey the coliforms and nematode eggs in runoff of Haraz River. Forty eight samples from four stations were taken during a year and samples examined for total coliform, fecal coliform and nematode eggs. The results showed that maximum and minimum of total coliforms in runoff was observed in Nourrod (3.1± 1.95 CFU/100ml) and Shahrak Esar Amole (2.2± 1.77CFU/100ml) and also maximum and minimum of fecal coliforms was in Nourrod (1.6± 1.23 CFU/100ml) and Shahrak Esar Amole (1.2± .54 CFU/100ml) respectively. Also, the average annual number of nematode worm's eggs in the studied stations was varied between 30 in Nourrod to 124± 41 in Shahrak Esar Amole.The results of this study showed that due to discharging of wastewater, sewage and runoff into the River result in decrease of water quality. Low quality of this river is caused distribution of microbial and parasites infections and is also contaminated of water used for agriculture, fish farms and horticulture.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
29
38
https://isfj.areeo.ac.ir/article_110221_4cd1706ab5154ee033a1a5e2bc3e6ca7.pdf
dx.doi.org/10.22092/isfj.2017.110221
Effects of Aloe vera extract on growth indices, carcass composition and bacterial flora of intestine in Siberian sturgeon (Acipenser baerii)
S.
بازاری مقدم
author
M.
Haghighi
author
M.
Sharif Rohani
author
M.
Hamidi
author
M.
Ghasemi
author
text
article
2016
per
Regarding the beneficial effects and benefits of the herb Aloe vera and its applicationin various industries such as pharmaceuticals and food industries, this study investigated the effects of Aloe vera extracton growth parameters and bacterial flora of the Siberian sturgeon (Acipenser baerii). In this study, a total of 360 numbers of Siberian sturgeon weighted average 10.95±0.04 (g) randomly distributed in four treatments including a control group and three experimental groups (each with three replications) were used. So, Aloe Vera extract powder ratio of 0.5%, 1% and 1.5% were added to the food. After eight weeks of feeding in the fiberglass vans and physicochemical parameters of water daily registration, biometry carried out and necessary samples collected. In this study, growth indicators such as weight gain, initial body weight, condition factor, feed conversion ratio, specific growth rate, protein efficiency ratio, hepatosomatic index and survival ratewere calculated. Results showed that all growth parameters (except hepatosomatic index) in the treatments compared to the control group showed statistically significant differences as a significant difference between the control group treated 1.5% extract were observed (p<0.05). Each carcass composition parameters, no significant difference was observed between the treatment and control groups (p>0.05). Meanwhile, totalcount of bacteriain intestine in the treatment and control groups did not show significant differences (p>0.05), but significant increase in the count of anaerobic bacteria (lactic acid bacteria) were observed compared to the control group (p<0.05). The result showed that Aloe vera extract can be effective in improving the growth performance of Siberian sturgeon.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
39
52
https://isfj.areeo.ac.ir/article_110222_f4a41dd72747f4fe454072c4cae5f834.pdf
dx.doi.org/10.22092/isfj.2017.110222
Dispersal, biodiversity and morphological characteristics of pelagic fish larvae in coastal waters of Hengam Island (strait of Hormoz)
نسرین
چشتی
author
نسرین
سخایی
author
بابک
دوست شناس
author
بیتا
ارچنگی
author
text
article
2016
per
This research have been conducted to investigate pelagic fish larval disperse, biodiversity and morphological features around Hengam Island. The island is located in south coast of Qeshm island in Strait of Hormoz. The bottom of vicinity water of Hengam Island is covered with coral reefs. Sampling carried out from late winter 2012 until late autumn using oblique sampling with 300 µm mesh plankton net. Fish larvae individuals were collected from near bottom to surface with three replicates from six selected sampling sites around the island. A total number of 6832 fish larvae were obtained from several families including Atherinidae, Carangidae, Cepolidae, Engraulidae, Hemiramphidae, Leiognathidae, Lethrinidae, Sillaginidae, Sparidae which consisted 48% of total abundance of larvae. The larval fish of the family Engraulidae was introduced with 0.18 individual per 10 cube meter of filtrated water in autumn as the dominant group. There was significant difference between seasons (ANOVA, p <0.05). Physicochemical factors were also measured at the time of sampling for each station. Negative correlation was found between water temperature and abundance of almost pelagic families using Spearman correlation coefficient. Also morphometric and meristic characteristics of species of fish larvae were studied. Maximum amount of Shannon- Weaner index of diversity and dominance index of Simpson estimated in autumn and summer were estimated 3.37 and 0.72 respectively.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
53
66
https://isfj.areeo.ac.ir/article_110223_deafcedb11bed65c0a17d824d1de5588.pdf
dx.doi.org/10.22092/isfj.2017.110223
Effects of lead sub-lethal concentration on Blood Iron content of the common carp, Cyprinus carpio
S.G.
Ghorbanzadeh Zafarani
author
N.
Karami Rad,
author
Sh.
Jamili
author
text
article
2016
per
In order to examine the effect of lead on the iron content of blood, sampling of common carp was carried out randomly from a fish culture pond in southeast of Babol by purse seine, in 2008. First of all, the experimental fish were adapted to laboratory conditions for 48 hours. Then, the effect of different concentrations of lead were examined using 3 experimental (A: 4.296 mg/l, B: 7.127 mg/l, C: 8.656 mg/l) and one control groups. There were 12 aquariums, each containing 12 fish. It was tried to apply an equal environmental condition for all of the aquariums during the experiment. Following 24, 48, 72 and 96 hours of exposure, fish were anesthetized and blood samples were taken from caudal vein. The fish average weight and length (total length) were 140.5 g, 21.8 cm, respectively. Concentrations of lead and iron have been determined by ICP-OES after acid digestion of blood samples by Microwave. This study showed that the absorption of lead and its concentration in the blood significantly increased (p<0.05) as the time passed compared to the control group. However, there was no significant trend since the blood acts as a carrier of heavy metals such as lead to the target organs.There was also no significant relationship (p<0.05, n=3) between increasing the amount of absorbed lead and blood iron changes. Therefore, it may be concluded that there is no interaction between blood iron and lead concentration. Increasing trend of blood iron concentration during the experiment was also probably because of some physiological changes resulting from stress in fish.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
67
79
https://isfj.areeo.ac.ir/article_110224_ea2e0a7c5b8a630000c94dfde382ec49.pdf
dx.doi.org/10.22092/isfj.2017.110224
Isolation,Identification and Evaluation of antimicrobial activity of Actinomycetes from marine sediments of Persian Gulf (Hormozgan Province)
M.
Gozari
author
M.S.
Mortazavi
author
R.
Karim zadeh
author
M.
Ebrahimi
author
R.
Dehghani
author
text
article
2016
per
Actinomycetes are gram positive and filamentous bacteria and produce major portion of bioactive compounds. The aim of this study was to isolate and identify antibiotic producing actinomycetes from Persian Gulf marine sediments within Hormozgan province territory. Among 3 selected isolation media the M1 medium showed highest efficacy by isolation of 32 colonies. Heat treatment of 100 ºC for 60 min isolated 26 colonies and showed the best result. Approximately 60 Actinomycete isolates were obtained from 10 sediment samples. Evaluation of antimicrobial activity showed that 33, 20 and 30 % of isolates exhibited antimicrobial activity against S.aureus, E.coli and C.albicans respectively.Morphologic, physiologic and chemotaxonomic studies showed that selected potent isolates consist of Ifro12, Ifro 33 and Ifro 47 belonged to Streptomyces genus. Molecular genetic studies based on 16s rRNA gene analysis revealed that Ifro12, Ifro 33 and Ifro 47 exhibited 99 % similarity to S.olivaceus, S.cacaoi and S.variabilis respectively. Phylogenetic analysis showed that Ifro12 and Ifro 47 derived from a common ancestor. The results of present research indicated that these three isolates could be considered as promising candidates for antibiotic discovery researches.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
81
93
https://isfj.areeo.ac.ir/article_110225_c548201b4068895c1ea146c529a8d57b.pdf
dx.doi.org/10.22092/isfj.2017.110225
Effects of incubation and larval rearing temperature on histological changes of muscles in Caspian trout (Salmo trutta caspius Kessler, 1877) larvae
H.R.
Alizadeh Sabet
author
M.R.
Kalbassi
author
M.
Pourkazemi
author
M.
Sadeghizadeh
author
text
article
2016
per
Out of considerable environmental factors, temperature and its possible effects on life stages of Caspian trout investigated by natural incubation (8 ͦC) condition simulation comparing with cold (4 ͦC) and warm (12 ͦC) constant incubation temperatures in 3 well equipped incubators by water recycling systems. Green eggs triple treatments of wild and F1 cultured brooders were incubated. Incubation implemented in dark by using REDD water and DO–pH –temperature digital monitoring ended to yolk sac absorption and entering larval stage. Numbers and diameters of white fiber muscles measured and significant differences considered between three thermal treatments (P<0.05) in both wild and cultured stocks. The numbers of white fiber muscles in warm treatment by highest means (72.54) and lowest diameter (8.46 micrometer) compared with Cold treatment white fiber muscles diameter (20.59 micrometer) and numbers (50.72) which were the highest diameter and lowest numbers means between treatments. Hatching success stated considerable mortality for cold treatments and 8°C incubator improved the best temperature in wild treatment. Incubation temperature induced significant effect on white fiber muscles stated considerable index for flesh precursor muscles condition which is subject of natural stocks rehabilitation and domestication projects considerations.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
95
104
https://isfj.areeo.ac.ir/article_110226_2d95ccac9264ffd07607cbc4def3e0c7.pdf
dx.doi.org/10.22092/isfj.2017.110226
Phytoplankton population structure of the Anzali wetland (2010 and 2011)
M.
Fallahi
author
M.
Makaremi
author
S.
Khatib
author
text
article
2016
per
Phytoplankton groups are very important producers in the Anzali wetland having a significant role in the quality and need to be constantly studied in term of their sequence and density. This survey was conducted at 6 stations between March 2011 and February 2012. According to the results, 67 different genera (22 Bacillariophyta, 26 Chlorophyta, 9 Cyanobacteria, 5 Cryptophyta, 1 Euglenophyta, 2 Chrysophyta, 1Dinoflgellata and 1 Xanthophyta) were identified. Most observed in Sorkhankol and Karkan stations with the annual average of 24.4±5.6 and 20.4± 5.4 cells/ liter respectively. The Bacillariophyta particularly Cyclotella was dominant in all of the stations, but high abundance of Cyanobacteria in Karkan station from July to mid-Octobercaused the annual average of this phylum to be more than Bacillariophyta. The highest and lowest phytoplankton abundances were observed in September and December, respectively.The number of phytoplankton genera and diversity in this study were less than previous studies.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
105
118
https://isfj.areeo.ac.ir/article_110227_77ad047feab8a8483259fcc581575161.pdf
dx.doi.org/10.22092/isfj.2017.110227
Effects of dietary lysine and methionine supplementation on growth, nutrient utilization and carcass compositions in beluga, Huso huso, fed soy protein-based diet
M.
Mohseni
author
M.
Pourkazemi
author
M. H.
Seyed Hassani
author
H.R.
Pourali
author
text
article
2016
per
A feeding trial was conducted to examine the effects of dietary supplementation of lysine and methionine on growth, nutrient utilization and carcass compositions in beluga, Huso huso. Four experimental soy protein based diets D0 (without lysine or methionine supplementation), D1 (lysine supplementation alone), D2 (methionine supplementation alone) and D3 (both lysine and methionine supplementation) were fed to triplicate groups. 240 fish with average weight of 144.6 ± 4.64 g were fed the experimental diets for 12wk. L-Lysine and DL-methionine were added to the diets containing 344 g kg-1 soybean meals at 22.02 and 12.94 g kg-1 of dry diet respectively. Significant higher weight gain, specific growth rate, protein efficiency ratio, condition factor, feed efficiency ratio, whole muscle protein and protein apparent digestibility were observed in fish fed soya protein-based diet supplemented with both lysine and methionine than that of fish of other dietary groups. There were no significant differences among fish fed diet supplemented with either methionine or lysine. Growth performances, feed utilization, carcass composition and apparent digestibility coefficients of protein, lipid and dry matter of fish fed control diet was significantly lower than those of fish fed diet supplemented both lysine and methionine and supplemented with either methionine or lysine. It can be concluded that beluga, fingerlings effectively utilize the supplemental amino acids (L-Lysine at 22.02 g kg-1 dry diet and DL-methionine at 12.94 g kg-1 dry diet) in the diets containing 344 g kg-1 soybean meals for better carcass proximate compositions, growth performance and feed efficiency and utilization.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
119
133
https://isfj.areeo.ac.ir/article_110228_b413e69cedf8a3878b0708d9722765f4.pdf
dx.doi.org/10.22092/isfj.2017.110228
The first study of the phylogenetic relationships of three rare species of Blenniids (Fishes: Blenniidae) from Makoran Coast based on the gene sequencing of Cytochrome Oxidase 1
G.
Attaran-Fariman
author
S.
Estekani
author
J.
Ghasemzadeh
author
text
article
2016
per
In order to assess the phylogenetic relationships of three rare species belonging to tribe Parablenniini was carried out, along the Coast of Oman Sea. Based on the type of habitats the specimens of Blenniid were collected from three sampling sites in the intertidal zones by Scoop and hand net in low tide and in sub-tidal zones by scuba diving and hand from 3, 6, 9, and 12m depths in September to March 2013. Totally 30 fish samples collected and deposited to the lab for further investigation. Based on the available identification keys and morphometric characters three species of Parablennius cornutus, Parabelennius pilicorn, Scartella emarginata were identified. DNA was extracted from the basal tissue of the first dorsal fin, subsequently by using a specific fish primer 700 bp of Cytochrome Oxidase C subunit 1 (CO1)was amplified in polymerase chain reaction (PCR) and sequenced. After comparison of Iranian Blenniid species CO1 sequence with sequence of 25 species from GenBank, was concluded that Iranian species are paraphyletically in the clade Parablenniini and sub-clads of Scartella and Parablennius. Since the relationship of Parablennius with other blenniids is the subject of many studies to resolve the conflicts and ambiguities among them we selected these genera to investigate the sister group relationship among them as well as other genera and clads. This is the first time that morphologic and molecular study of the two genera Parablennius and Scartella have been carried out in Iran.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
135
147
https://isfj.areeo.ac.ir/article_110229_0fb2a62e125b010da9cec93f31defa09.pdf
dx.doi.org/10.22092/isfj.2017.110229
Effect of synthetic and algal astaxanthin levels on egg astaxanthin content of rainbow trout (Oncorhynchus mykiss)
M.
Alizadeh
author
R.
Razieh Ansari
author
Sh.
Dadgar
author
M.
Hafezieh
author
text
article
2016
per
This research was done in a trout farm in Kohkiloyeh and Boyer- Ahmad province. The main object of this study was comparing of two sources of astaxanthin (synthetic or algae) in feed on astaxanthin content of egg in rainbow trout. It was considered seven groups consisting six treatments (T1-T6) in two different astaxanthin sources and a control (C) (without astaxanthin). So, algal astaxanthin (haematococcus pluvialis) in the three levels of 2.67, 3.55 and 8gr/kg food (T1,T2, T3); and synthetic astaxanthin in three levels of 40, 80 and 120mg/kg food in diet (T4, T5, T6) examined on 140 trout broods (3-4 years) for 4 months, before the spawning season. Astaxanthin content of obtained eggs from all treatments in spawning season was measured by HPLC apparatus. The highest and the lowest amount of egg astaxanthin were observed in T3 and C respectively. In each astaxanthin group, a significant difference was obtained between averages in treatments (P <0.05), as T3 was the highest between them. No significant difference was observed between synthetic astaxanthin treatments (T4, T5 and T6) and T1 (the lowest level of algal astaxanthin). Treatments T2 and T6 also had the same function in term of saving astaxanthin in eggs. It also concluded that natural astaxanthin (Haematococcus pluvialis) for the reason that contains supplementary nutritious, is extraordinary preferable than synthetic astaxanthin to improve astaxanthing content of egg in rainbow trout.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
149
160
https://isfj.areeo.ac.ir/article_110230_ea71a82c0aa6e83240ec6a3db84d4143.pdf
dx.doi.org/10.22092/isfj.2017.110230
Effects of starvation and refeeding on the hematological and serum parameters and body proximate composition of Caspian salmon (Salmo trutta caspius) fingerligs
A.
Zaefarian
author
S.
Yeganeh
author
H.
Oraji
author
Kh.
Jani khalili
author
text
article
2016
per
This study was conducted to investigate the effects of periods of starvation and refeeding on some hematological, serum parameters and whole body proximate composition in Caspian salmon (Salmo trutta caspius). 240 samples of the Caspian salmon with an average weight of 13.73 ± 0.63 g were kept in 300 liter polyethylene tanks. Samples were fed twice a day with Rainbow trout commercial feed to the point of satiation. This experiment lasted for 10 weeks with control (without starvation) and 3 starvation treatments including 2, 4 and 6 weeks of starvation followed by 4 weeks of refeeding with 3 replicates. During rearing period, the average of water temperature, pH and dissolved oxygen were 14.15±0.27 ° C, 8.44±0.17 and 6.34±0.24 mgl-1, respectively. At the end of starvation period, the results of blood parameters showed that starvation significantly increased red blood cells and hematocrit in treatment with 2 weeks of starvation (0.893±0.58 × 106/mm3) and 6 weeks of starvation (42.33±3.21 %, P<0.05), respectively. At the end of trial, the highest value of white blood cells belonged to 6 weeks starvation treatment (14.2±0.12 × 103/mm3) while the lowest (10±0.60 × 103/mm3) was observed in the control. Results of the biochemical serum parameters indicated the lowest amount of total protein (1.71±0.88 mg/dl) and glucose (41.35±1.44 mg/dl) were obtained in 6 weeks starvation treatment, right after the starvation period (P<0.05). At the end of the starvation period, the whole body protein content of control was lower than other treatmens (P<0.05), but after 2 weeks of refeeding, whole body protein content of 2 and 4 weeks starvation treatments didn't show any significant difference compared to control (P>0.05). At the end of the experiment, the lowest value of lipid belonged to starvation treatments while the highest value was observed in control (P<0.05). Generally, this can be inferred that Caspian salmon fish can tolerate starvation for 2 weeks without any negative impact on blood and serum biochemical parameters and for 4 weeks on whole body proximate composition.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
161
173
https://isfj.areeo.ac.ir/article_110231_c818c3d85cb1b351b8354e1e5e8580cf.pdf
dx.doi.org/10.22092/isfj.2017.110231
Feasibility study of white shrimp, Litopenaeus vannamei, culture in earthen ponds using brackish water of the Caspian Sea
S.M.V.
Farabi
author
A.A.
Salehi
author
R.
Pourgholam
author
M.
Ghanei Tehrani
author
text
article
2016
per
Litopenaeus vannamei (Boone, 1931) post-larvae 12 were obtained from Bushehr province and reared at the Caspian Sea Ecological Research Iinstitute (Mazandaran, Iran) in summer 2012 using brackish water of the Caspian Sea. Prior to start of the experiment, post-larvae were gradually adapted to brackish water. The shrimp was stocked in a 1000 m2 earthen pond with a stocking density of 31 individual/m2. The earthen pond was in quarantine without discharge valve. During the rearing period, there was no water exchange. The shrimp was reared for 85 days. The average daily growth, final mean weight, feed conversion ratio and final yield were 0.31±0.04 g, 21.11±0.71 g, 0.79 and 531 kg, respectively. The results showed that L. vannamei can growth well in brackish water of Caspian Sea (salinity of 11.1±0.7 ppt and temperature of 28.67±0.72 °C) in Mazandaran province from July to September.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
175
182
https://isfj.areeo.ac.ir/article_110232_ee73461da28516ef6b60bfa774d35f90.pdf
dx.doi.org/10.22092/isfj.2017.110232
Evaluation of biological characteristics such as age, sexuality and growth parameters of fish roach (Rutilus rutilus caspicus) in the southeastern coasts of the Caspian Sea (Sari and Turkmen of port)
H.
Taghavi Jlodar
author
A.
Amri Sahebi
author
text
article
2016
per
Purpose of this study was to evaluate the biological parameters of growth and some roach (Rutilus rutilus caspicus) on the southern coast of the Caspian Sea. Therefore, 160 pieces of fish taken from two the regions and some biological characteristics such as age, sexuality and growth, given the importance and development of population and time were studied. The mean (±Standard Deviation) age, body weight and fork length fish roach respectively in Sari and Turkmen of port 2.8±0.68 and 2.4±0.97 years, 18.56±2.12 and 16.5±2.62 cm, 117.67±48.82 and 76.73±36.31 gr. There is a significant correlation between fork length, weight and age of fish (P<0.001). The sex ratio of male to female fish roach in Sari 1:1.5 and Turkmen of port 1.7: 1, which respectively, differences significant are statistically (Sari: t-test=15.39, P<0.001) (Turkmen port: t-test= 18.25, P <0.001). Index GSI (Gonad Somatic Index) in Sari fish roach over the fish roach of Turkmen of port and season gonad growth in both areas was appropriate. The mean condition factor (CF) in Sari and Turkmen of port fish roach showing respectively 1.24±0.14 and 1.12±0.09. Also, the length and weight relationship, positive growth pattern in both locations is displayed. All these factors indicate different status, age, sexuality and growth of the fish is investigated in the two areas.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
183
192
https://isfj.areeo.ac.ir/article_110233_d9768abf09436e23bd1c93b2d10bdab7.pdf
dx.doi.org/10.22092/isfj.2017.110233
Assessment of resistance and non-resistance fractions of heavy metals concentration (Fe, Mn, Cr, Ni) in surface sediments from the southern of Caspian Sea of two stations (Tonekabon and Amirabad)
R.
Zarshenas
author
H.
Nasrollahzadeh Saravi
author
P.
Farshchi
author
S.
Najafpour
author
text
article
2016
per
This study was conducted to determine some heavy metals (Fe, Mg, Cr, Ni) of surface sediment in the southern Caspian Sea during two seasons (Summer and Winter) in 2014-2015. 36 surface sediments samples (with triplicate) were collected at two stations (Tonekabon and Bandar Amirabad). All samples were analyzed using sequential extraction to indicate natural and anthropogenic sources. The results indicated that the percentage of non-resistance fraction in Tonekabon area were measured 3.5,45.0, 22.1 and 6.0 for Fe, Mg,Cr, Ni, respectively and in Amirabad area were 23.0,2.6,1.8 and 4.0, respectively. On the other hand, the percentage of resistance fraction values were obtained 96.5, 55.0, 77.9 and 94.0 in Tonekabon, and 77.0, 97.4, 98.2, and 96.0 in Amirabad region. The chemical speciation of Fe, Mg, Cr, Ni in most sampling stations were in the order of residual> oxidisable-organic > acid-reducible >exchangeable. The order of total concentration, non-resistance and resistance fraction were observed Fe>Mn>Ni>Cr, Mn>Fe>Ni>Cr and Fe>Mn>Ni>Cr, respectively. As a conclusion, results of total concentration, resistnace and non-resistance of Fe, Mn, Ni and Cr were lower than standard and earth shell (Igeo) in this area. This is shown that surface sediments of this area were not polluted with these heavy metals and bioavaiable fraction provides little indication of potential interactions with the biotic components present in this environment.
Iranian Scientific Fisheries Journal
Agricultural Research,Education and Extension Organization
1026-1354
25
v.
1
no.
2016
201
206
https://isfj.areeo.ac.ir/article_110234_8e72a0491faee0c5da1a3fc254f585c2.pdf
dx.doi.org/10.22092/isfj.2017.110234