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  • 11
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    Biometrical characters of Artemia from four Iranian regions (2018)
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    Publication Date: 2021-05-19
    Description: In order to introduce the best strain of Iranian Artemia cyst to larvicultural feeding of aquatic animals, biometrical characteristics of Artemia cysts and newly hatched nauplii of four different geographical regions of Iran (Maharloo Lake, Fars province, Meyqan Lake, Central province Urmia Lake and Fesendooze pond West Azarbaijan province) were determined. Whole cysts and decapsulated cyst diameters, chorion thickness, dry weight and total length of newly hatched nauplii were measured under stereomicroscope equipped with Motic 2000 software MLC – 150C, attached to a monitor. The obtained data were statistically analyzed by one way ANOVA and tested with multivariate Duncan test. The results showed that Artemia urmiana cyst has a significantly larger diameter and nauplius total length than the other cysts (P〈0.05) (285.4 ± 0.53 µm and 511.8± 1.27 µm, respectively). Although the chorion thickness of the Meyqan cyst is higher than the others there are not any significant differences between them (P〉0.05). The smallest cyst diameter (276.8± 0.58 µm), nauplii total length (491.2±1.17 µm) and consequently the largest number of cysts per gram were obtained from Fesendooz. Due to the suitable size of Artemia samples for shrimp post larvae, ornamental and marine fish larval stage feeding it could be a good candidate for replacing imported expensive cysts.
    Description: Published
    Keywords: Artemia ; Cyst ; Decapsulated cyst ; Chorion thickness ; Biometrical
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.294-303
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  • 12
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    Effects of ICES30/4-enriched Artemia urmiana nauplii on growth, survival, salinity tolerance and fatty acid composition of Acipenser persicus larvae (2018)
    Details
    Publication Date: 2021-05-19
    Description: Effects of Artemia urmiana enriched with ICES30/4 as a commercial emulsion of highly unsaturated fatty acid (HUFA) on growth, survival, salinity tolerance and fatty acid composition of the Persian sturgeon larvae were evaluated. Artemia enriched for two different time periods (12 and 24 hours) and non-enriched artemia were fed to A. persicus larvae (average initial wet weight 46.80± 2.03mg) during 20 days. The n3-HUFA content ranged from 0.82±0.08 mg /g DW in non-enriched artemia to 7.69±0.2 mg/g DW in enriched artemia during 24 h with ICES30/4 and ranged from 3.20±0.30 mg/g DW in sturgeon fish larvae fed with non-enriched artemia to 5.98±0.43 mg/g DW in fish larvae fed with 24 h-artemia enriched with ICES30/4 after 20 days. The n3-HUFA content significantly increased compared to 12 h enrichment period both in artemia and sturgeons fed with these artemia (p〈0.05). A significant increase in survival percentages and salinity tolerance were observed between fish larvae fed with enriched and non-enriched artemia (p〈0.05), while growth rate did not significantly differ among the treatments (p〉0.05).
    Description: Published
    Keywords: Aquaculture ; Artemia urmiana ; Persian sturgeon (Acipenser persicus) ; Enrichment ; Growth ; Survival performance ; Fatty acids composition ; Larvae ; Survival
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.183-193
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  • 13
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    Effects of supplementation of algae (Sargassum ilicifolium) on growth, survival and body composition of rainbow trout Oncorhynchus mykiss (2018)
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    Publication Date: 2021-05-19
    Description: The effects of substituting dietary protein sources with different levels of Sargassum ilicifolium on growth, survival and body composition of rainbow trout Oncorhynchus mykiss were investigated over the course of a 60 day experiment. A total of 360 juveniles (75±2.8 g) were randomly allotted to four treatment groups including (control: with 100% basal diet (BD); T1: 5% sargassum meal (SM)+95% BD; T2: 7.5% (SM)+92.5% BD and T3: 10% (SM)+90% BD. Each treatment group was divided into three replicates of 30 fish per replicate. At the end of the experiment, our results showed that replacement of 5% and 7.5 % of basal diet with sargassum meal showed significant differences in average weight and total length, feed conversion ratio (FCR), specific growth rate (SGR), weight gain percent (WG), condition factor (CF) and survival rate (SR). There were significant differences between calorie content of carcass in T2 and control with T1 and T3 (p〈0.05). The highest values of carcass protein content were observed in T1 (p〈0.05). There were significant differences between lipid content of fish in T2 and control with that of fish in T1 and T3 (p〈0.05). The highest values of carcass ash content were observed in T1, (p〈0.05) which were not significantly different from that in other treatments (p〉0.05). Levels all of amino acids were higher in fish in T2.
    Description: Published
    Keywords: Aquaculture ; Oncorhynchus mykiss ; Protein sources ; Sargassum ilicifolium ; Growth ; Survival ; Body composition ; Rainbow trout ; Body composition ; Algae ; Length ; Fed ; Fish
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.194-205
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  • 14
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    Dietary effects of seaweed Sargassum ilicifolium on reducing cholesterol level of white leg shrimp (Litopenaeus vannamei) (2018)
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    Publication Date: 2021-05-19
    Description: In this research, the nutritional effects of Sargassum ilicifolium Chabahar Bay, Oman Sea, on cholesterol levels of white-leg shrimp (Litopenaeus vannamei) were studied. The seaweed was collected from coastal areas, rinsed, dried, powdered and the nutritional values were measured in the laboratory. A part of protein resources of shrimp feed replaced with seaweed powder in four treatments (D: as control without any replacement) C: with 5%, B: 10 % and A: 15% seaweed replacement, each with three replicates in order to obtain isonitrogenus 33% CP., and Isocaloric (13% fat and 15% carbohydrate) feed. Dried diets were used according to the daily need of shrimp, calculated after each 10 day biometry. Water stability and absorption capacity of the pellets in sea water were measured and compared statistically. Juvenile shrimps (Initial body weight=3 g) were acclimated for one week under hatchery conditions and were fed 3-5% of their body weight. Abiotic parameters, weight and length biometry were measured on day two and day 10, respectively. After 45 days final biometry, body analysis were measured, and muscle colorimeter were conducted using HPLC. There were no significant differences (p〉0.05) between body lipid among treatments, but cholesterol content (mg/100gWW) showed significant differences (p〈0.05), the lowest (121.68±12.12) was in treatment A, and the highest in D (147.92±11.02). Treatments A and B showed color changes to pink- partial orange and pink in shrimp muscle with no differences compared to white and no color in shrimp in treatments C and D. It seems that this color change plays a major role in market acceptability.
    Description: Published
    Keywords: Sargassum ilicifolium ; Litopenaeus vannamei ; Cholesterol ; Color ; Feed ; White-leg shrimp ; Seaweed ; Dietary
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.1248-1256
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  • 15
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    The growth, survival rate and reproductive characteristics of Artemia urmiana fed by Dunaliella tertiolecta, Tetraselmis suecica, Nannochloropsis oculata, Chaetoceros sp., Chlorella sp. and Spirolina sp. as feeding microalgae (2018)
    Details
    Publication Date: 2021-05-19
    Description: This study was performed to compare the efficiency of six microalgae namely Dunaliella tertiolecta, Tetraselmis suecica, Nannochloropsis oculata, Chaetoceros sp., Chlorella sp. and Spirolina sp. on the growth, survival rate and reproduction efficacy in Artemia urmiana in laboratory conditions. Artemia cysts were harvested from Urmia Lake and hatched according to the standard method. Live microalgae were cultured using the f/2 culture medium. Artemia survival was determined in treatments on days 8, 11, 14, 17 and 20. A highly significant difference (p〈0.01) were found among three microalgae in terms of length growth, survival rates and reproduction characteristics in A. urmiana. In spite of higher length growth of A.urmiana fed on N. oculata than A. urmiana fed by T. suecica but survival and reproduction in the latter was better than the first treatment. In general, D. tertiolecta was more efficient than other microalgae examined in the present study on A. urmiana concerning not only to growth and survival but also to reproduction mode. So, it is preferred to feed A. urmiana.
    Description: Published
    Keywords: Ecology ; Dunaliella tertiolecta ; Tetraselmis suecica ; Nannochloropsis oculata ; Chaetoceros sp. ; Chlorella sp. ; Spirolina sp. ; Artemia urmiana ; Microalgae ; Length growth ; Survival rate ; Feeding
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.727-737
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  • 16
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    Evaluation of some feeding indices of Pomadasys kaakan in the Northern Persian Gulf (2018)
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    Publication Date: 2021-05-19
    Description: In this paper the Vacuity Index (VI), Fullness Index (FI) and Food Preference Index (FPI) for the stomach contents of Pomadasys kaakan were evaluated to assess the quantity and kind of food which this fish consumes in the Persian Gulf. A total of 227 specimens were collected from fishing trawlers or landings from November 2005 to September 2006. 24.7% of stomachs were full, 11.9% were semi-full and 63.4% were empty. The seasonal average of VI was 77.4, 44.6, 80.0 and 54.0 % for autumn, winter, spring and summer, respectively. The overall FI was 36.6 with seasonal averages of 22.6, 55.4, 20.0 and 46.0 in autumn, winter, spring and summer, respectively. The main stomach contents were crustaceans (esp. crab & shrimp), fish, mollusks (bivalves, gastropods and cuttlefish), stomatopoda, brittle stars, Lingula sp. and sea weeds. The estimated FPIs for crustaceans were 77.7, fish 32.1, mollusks 28.6 and echinoderms 18.8 %. Overall, the results show that this fish is a relatively frugal species which consumes crustaceans as main food and has adopted itself with ecological changes of the Persian Gulf.
    Description: Published
    Keywords: Pomadasys kaakan ; Feeding ; Food Preference ; Vacuity and Fullness Indices
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.497-504
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  • 17
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    Proximate composition and fatty acids profiles of Artemia cysts, and nauplii from different geographical regions of Iran (2018)
    Details
    Publication Date: 2021-05-19
    Description: Artemia has been widely used in aquaculture as a suitable live food. The presence of highly unsaturated fatty acids is a key factor that determines the nutritional value and marketing of Artemia for shrimp, marine larvae, sturgeon and ornamental fish industries. To determine the variation in nutritional content in cysts, decapsulated cysts and nauplii of Artemia from three different biotopes of Iran, were tested for their protein, lipid, energy, and fatty acid profiles, particularly essential fatty acids. The cysts collected from Urmia, Maharlou and Meighan lakes, were rinsed, processed, decapsulated, hatched and then analyzed for proximate and fatty acid composition using standard methods. Statistical comparisons of the results revealed significant differences not only in proximate composition but also in fatty acid contents (p〈0.05). The highest mean (±SD) level of protein (60.5±3.3 %), lipid (18.60±1.1%) and energy contents (5448.3±10.4 Kcal/kg) were observed in Instar I nauplii hatched from Urmia Lake cysts, Instar I nauplii hatched from Maharlou Lake cyst and Instar I nauplii hatched from Urmia Lake decapsulated cyst, respectively. The highest content of DHA (0.78 mg/g DW) was observed in nauplii of cysts from Urmia Lake whereas, it was around zero in other samples. The highest level of EPA (24.24 mg/g DW) was measured in nauplii from Maharlou Lake decapsulated cysts and the lowest (0.24 mg/g DW) was observed in Urmia lake cysts. The results revealed that the nauplii from decapsulated cysts of Maharlou Lake Artemia contained significantly higher levels of EPA and n-3 HUFA compared to others. Therefore, it is recommended to use it in aquatic larviculture.
    Description: Published
    Keywords: Biology ; Physiology ; Artemia ; Cyst ; Decapsulated cyst ; Nauplii ; Nutritional value
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.761-775
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  • 18
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    Morphological characteristics of lapillus and aging of Plicofollis dussumieri (Ruppell, 1837) from Oman Sea (2018)
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    Publication Date: 2021-05-19
    Description: In this paper age determination and morphological characteristics of blacktip catfish, Plicofollis dussumieri, from Oman Sea were evaluated. A total of 132 fish specimens were collected from fishing trawlers or landings from March 2011 to July 2012, with minimum and maximum of 245 mm, 195 g and 767 mm, 5801 g, respectively. Maximum life span was 12 years for the length range of 245 – 767 mm FL, while total body weight (BW) ranged between 195 and 5801 g and the resultant equation was: W = 0.040 L2.8275 (R2 = 0.99). High correlation coefficient value found between age and FL was R= 0.97 and for age-BW was 0.94. This value for otolith weight and BW was estimated to be 0.91 and showing that there were significant correlations between measured parameters. Lapillus otolith in blacktip catfish is the biggest otolith among most teleostei fishes, also the Sagitta is the biggest. Lapillus of this species is round, robust, onion-like and without sulcus curve, with no obvious growth increments in rostrum and antirostrum zones. In ventral side Gibbus maculae is concave having prominentia marginalis in anterior and basal line in posterior parts.
    Description: Published
    Keywords: Biology ; Physiology ; Plicofollis dussumieri ; Catfish ; Blacktip catfish ; Morphology ; Age ; Otolith ; Lapillus
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.494-502
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  • 19
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    Nutritional value of Chabahar Bay (Oman Sea) Sargassum lentifollium before and after monsoon season (2017)
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    Publication Date: 2021-05-19
    Description: The proximate composition of brown seaweed Sargassum lentifollium was investigated in this study along with analysis of some physicochemical parameters of Chabahar Bay water. The relationship between the nutritive components of this species and environmental parameters was established. Crude protein content varied from 8.05±1.15% of dry weight to 12.29±1.10%, carbohydrate from 31.11±2.03% to 25.11±2.13%, humidity from 15.21±1.00% to 19.22±1.11% with differences significantly before and after monsoon seasons, respectively while ash content varied from 26.11±2.43% to 24.11±1.40%, total fat from 2.11±0.43 % to 1.80±0.40% , total fiber from 10.34±2.21% to 11.84±0.33% and astaxantin content (ppm) from 104.11±1.00 to 97.20±1.18 before and after monsoon season respectively without any significant differences(P〉0.05). Regarding to physicochemical parameters of sea water, the result showed there are differences between salinity, dissolved oxygen, water temperature, nitrate, phosphate, chlorophyll a and c before and after monsoon season significantly while there are not in pH, silicate and chlorophyll b. Statistical analysis computed among the environmental and biochemical parameters suggested the potential role played by the abiotic parameters on biosynthetic pathways of seaweed.
    Description: Published
    Keywords: Sargassum lentifollium ; Nutritional value ; Abiotic parameters ; Seaweed
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.31-41
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  • 20
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    Evaluating the effects of dietary intake of encapsulated Lactobacillus plantarum KC426951 on growth, survival rate, blood and serum factors and gut bacterial flora of Rainbow trout (Oncorhynchus mykiss) (2018)
    Details
    Publication Date: 2021-05-19
    Description: In this study, the effects of Lactobacillus plantarum KC426951 on growth, survival rate, blood and serum factors and gut bacterial flora of rainbow trout were investigated. For this purpose, 90 fish with an average weight of 12.94±0.35 g were fed for 8 weeks with the diets containing different amounts of encapsulated Lactobacillus plantarum including treatment 1 (107 CFU/g), treatment 2 (108 CFU/g) and the control treatment without Lactobacillus plantarum (T0). The results of this study showed that the highest weight gain, percent of body weight gain, specific growth rate and the lowest feed conversion rate were observed in the treatments 1 which were significantly different as compared to those of the control treatment (P〈0.05). However, the amounts of survival rates were not significantly different among various treatments (P〉0.05). In blood factors, the numbers of white blood cells in the treatments containing bacteria were significantly higher than the control treatment (P〈0.05). The amount of neutrophil in the treatment 1 was lower than that of the other treatments, whereas the amount of lymphocyte in the treatment 1 was higher than that of the other treatments (P〈0.05). The amount of monocyte in the treatment 2 was significantly higher than that of the treatment 1 (P〈0.05). The levels of glucose, triglyceride, cholesterol, LDL, AST and ALP were significantly higher in the treatment 1 than those of the other treatments. The amount of total protein in the treatment 1 was significantly higher than that of the treatment 2 (P〈0.05). But there were not significant differences among various treatments in other blood parameters (P〉0.05). According to the results, the numbers of lactic acid bacteria in the treatments containing bacteria (1 and 2) were significantly higher than the control treatment. The total bacterial count in the treatment 1 was significantly higher than that of the other treatments (P〈0.05). Therefore, the addition of 107 CFU/g of encapsulated Lactobacillus plantarum bacteria to fish diet could have positive effects on the growth and health parameters of rainbow trout.
    Description: Published
    Keywords: Encapsulated Lactobacillus plantarum KC426951 ; Rainbow trout ; Oncorhynchus mykiss ; Diet ; Growth ; Survival ; Blood ; Plasma ; Serum ; Parameters ; Growth indices ; Blood factors ; Gut bacterial flora
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.33-44
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