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  • Fisheries  (16)
  • 1
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    The fifth developing plan of Iranian Fisheries Research Institute (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Accurate scientific and practical plan for achieving the goals of the Islamic Republic of Iran within the framework of Vision development 1404 , is the infrastructure achieving sustainable development of the country . Order to achieve the above mentioned objectives and in order to the comprehensive development plans in the country, Iranian fisheries research organization adjust the fifth developing plan for support of executive related departments in country with mobilization a large number researchers consists of several working groups of ifro affiliated research centers . The fifth developing plan consist of three chapters for report of the forth developing plan and intrudction of research , construction plans and financial support (budjet) for period of 2011-2014 A.C .
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fisheries ; Aquaculture ; IFRO ; Developing plans ; Fisheries research
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 144pp.
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  • 2
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    Effect of synthetic and algal astaxanthin levels on egg astaxanthin content of rainbow trout (Oncorhynchus mykiss) (2021)
    In:  http://aquaticcommons.org/id/eprint/22105 | 18721 | 2018-02-08 03:42:11 | 22105 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-06-26
    Description: 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 astaxanthin content of egg in rainbow trout.
    Keywords: Biology ; Chemistry ; Fisheries ; rainbow trout ; egg astaxanthin content ; algal astaxanthin ; Haematococcus ; Oncorhynchus mykiss ; Iran pluvialis
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 149-160
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  • 3
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    Morphological characteristics of lapillus and aging of Plicofollis dussumieri (Ruppell, 1837) from Oman Sea (2021)
    In:  http://aquaticcommons.org/id/eprint/22792 | 18721 | 2018-05-22 19:40:40 | 22792 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-10
    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 L^2.8275 (R^2 = 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.
    Keywords: Biology ; Fisheries ; Blacktip catfish ; Morphology ; Age ; Otolith ; Oman Sea ; Biology ; Physiology ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 494-502
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  • 4
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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 (2021)
    In:  http://aquaticcommons.org/id/eprint/22858 | 18721 | 2018-05-30 19:49:05 | 22858 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-10
    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).
    Keywords: Aquaculture ; Biology ; Fisheries ; Artemia urmiana ; Persian sturgeon (Acipenser persicus) ; Enrichment ; Growth ; Survival performance ; Fatty acids composition ; aquaculture ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 183-193
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  • 5
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    Evaluation of some feeding indices of Pomadasys kaakan in the northern Persian Gulf (2021)
    In:  http://aquaticcommons.org/id/eprint/22441 | 18721 | 2018-04-09 19:29:38 | 22441 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-05
    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.
    Keywords: Biology ; Ecology ; Fisheries ; Pomadasys kaakan ; Feeding ; Food Preference ; Vacuity and Fullness Indices ; Persian Gulf ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 497-504
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  • 6
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    Dietary effects of seaweed Sargassum ilicifolium on reducing cholesterol level of white leg shrimp (Litopenaeus vannamei) (2021)
    In:  http://aquaticcommons.org/id/eprint/23157 | 18721 | 2018-06-18 22:34:29 | 23157 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-13
    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.
    Keywords: Aquaculture ; Biology ; Fisheries ; Cholesterol ; Color ; Feed ; White-leg shrimp ; Seaweed ; Chabahar Bay ; Oman Sea ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1248-1256
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  • 7
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    Effects of enriched Artemia urmiana with HUFA on growth, survival, and fatty acids composition of the Persian sturgeon larvae (Acipenser persicus) (2021)
    In:  http://aquaticcommons.org/id/eprint/22355 | 18721 | 2018-03-27 17:49:48 | 22355 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-03
    Description: Recently, the nutritional requirements of marine finfish larvae have received considerable attention, and studies have shown that docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) and arachidonic acid (ARA) affects the growth and survival of marine finfish larvae. This study investigated the effects of different Artemia enrichments containing variable amounts of DHA and EPA on the growth and survival of larval Persian sturgeon (Acipenser persicus). Four different Artemia enrichments ICES30/4 (with 20.90mg/g DW DHA and 6.29mg/g DW EPA), Sturgeon Ovary Oil (SOO) (with 2.76mg/g DW DHA and 7.55mg/g DW EPA), Cod Liver Oil (CLO) (with 7.64mg/g DW DHA and 11.39mg/g DW EPA) and Linseed Oil (LO) (with 0.00mg/g DW DHA and 0.03mg/g DW EPA) in seventy five aquaria (each 45 liter, with three replicates per treatment) were used. The resultant Artemia contained a different concentration of DHA (0.00-5.99mg/g DW) and EPA (0.69-4.97mg/g DW). Larvae were fed with Artemia from 3 to 20 days after active feeding at 250 prey 1^-1. Results showed that there were significant differences between treatments regarding to the total length and wet weight but no significant differences were found in dry weight between the larvae reared on different treatments. However, larvae reared on LO were significantly higher (in weight) than larvae reared on ICES30/4 and SOO. Larval survival on the SOO enriched Artemia (93.3±1.6) at 20th day was significantly higher than other treatments. Our results showed a positive effect of Artemia DHA proportions on growth and survival of the Persian sturgeon, and demonstrated that larvae of this species require a high ratio of dietary DHA to EPA.
    Description: Article includes abstract in Farsi on last page.
    Keywords: Aquaculture ; Biology ; Fisheries ; Persian sturgeon larvae ; Fatty acid composition ; Enrichments ; Artemia urmiana ; growth ; survival ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 61-72
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  • 8
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    Effects of supplementation of algae (Sargassum ilicifolium) on growth, survival and body composition of rainbow trout Oncorhynchus mykiss (2021)
    In:  http://aquaticcommons.org/id/eprint/22859 | 18721 | 2018-05-30 20:04:38 | 22859 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-10
    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.
    Keywords: Aquaculture ; Biology ; Fisheries ; Protein sources ; Sargassum ilicifolium ; Growth ; Survival ; Body composition ; Rainbow trout ; aquaculture ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 194-205
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  • 9
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    Biometrical characters of Artemia from four Iranian regions (2021)
    In:  http://aquaticcommons.org/id/eprint/22451 | 18721 | 2018-04-09 21:07:19 | 22451 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-05
    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.
    Keywords: Aquaculture ; Biology ; Fisheries ; Artemia ; Cyst ; Decapsulated cyst ; Chorion thickness ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 294-303
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  • 10
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    Using Oman Sea Sargassum illicifolium meal for feeding white leg shrimp Litopenaeus vannamei (2021)
    In:  http://aquaticcommons.org/id/eprint/22668 | 18721 | 2018-05-14 20:50:46 | 22668 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-08
    Description: The brown seaweed Sargassum illicifolium is abundant along the Iranian coastline of the Oman Sea in which is rich in nutrients. The aim of the present study was to test the hypothesis which it can be used as a source of protein in shrimp diets. The experiment was conducted in a laboratory, 2013, where 3g shrimp juvenile acclimation in a 5000L tank. They were then kept in plastic tank containing 300L sea water and 30 shrimp juveniles in which were fed daily (3% of biomass) in four equal portions with one of four different diets in four repetitions for a period of 45 days. All diets contained 33% crude protein (isoprotein) and 355 kcal 100 g^−1 (isocaloric), with different percentages of Sargassum powder: Diet “A” 15%, Diet “B” 10%, Diet “C” 5%, and Diet “D” (Control) without seaweed. Final biomass values ranged from 120.89 to 128.66 g. L^−1; weight gains in biomass ranged from 106.49 to 124.36 g L^−1, and SGR ranged from 4.68 to 5.68% exhibited no significant differences between treatments (p〉.05). Survival rate 95.2 to 97.0% was almost equal under the four experimental conditions (p〉.05). Diets “A” and “B”, with a greater content of algae, exhibited better feed conversion (1.15:1 and 1.17:1) than diets “C” and “D” (1.30:1 and 1.33:1) (p〈.05). The physicochemical variables of the water showed no significant variation and remained within the standards necessary for the wellbeing of the animals. If sufficient biomass of beached algae can be practically and economically collected, it can be used as a component in the making of shrimp feed.
    Keywords: Aquaculture ; Biology ; Fisheries ; Sargassum ; Diet ; Shrimp ; Growth rate ; Survival rate ; Oman Sea ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 73-80
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