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  • 1
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    Ecological study on rearing shrimp ponds (Litopenaeus vannemei) in Choebdeh Abadan (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Following to introduce Vannamei shrimp (Litopenaeus vannamei) into Iran aquaculture industries by fisheries organization its postlarvae were successfully reared in ponds in Bushehr and Choebdeh in Khuzestan. Due to activity of Shrimp site and importance of input and output water quality, this study was done in 11 stations including: two stations in Bahmanshir river, two station in C4 and C5 irrigation canals, six staions in active farms along C4 cannel (Yonesi, Mosavei and Salman Zadeh), and C5 cannel (Mohamadi, Khairi and Ashraf Por) and one staion in output draing were selected. Sampling were carried out from May2009 befor beginning stocking to harvest time in October 2009. Physico- chemical parameters and plankton sampled biweekly and benthic animals and heavy metals were sampled monthly. Some parameters such as pH and temperature by using portable multy parameters and others. Analyzed with standard methods. Heavy metals were measured by plarography method (797 Vamtro). Plankton and benthos samples were studied only in Bahmanshir station. According to results the maximum values for DO (11.1 ppm) PO4 (1.86 ppm) NO3 (8.4 ppm) and TSS (4992 ppm), pH (8.4) NO2 (0.18 ppm) BOD5 (9.06 ppm) were measured. In comparison to aquaculture water quality standards except for TSS in river stations others are located in allowable range. We didn’t observed any main changes in water quality from river to output drainage. The results of biotic parameters in river stations showed that diatoms were the most group of phytoplanktons. Zooplankton groups were Copepods, Rotifera and Protozoa. Tintinids and Nematoda larvae were the most abundant zooplankton. Benthic animals were included nine crustacean species and two annelid species. Isopods with 52% were the most and ant group.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Ecological ; Physico-chemical ; Vannamei shrimp ; Litopenaeus vannamei ; Water quality ; Abadan aquaculture site ; Rearing ; Shrimp ; Ponds ; Sampling ; Plankton ; Heavy metals ; pH ; Temperature ; Benthos ; Phytoplankton ; Zooplankton ; Copepods ; Nematoda larvae
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 80pp.
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  • 2
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    Identification of native fish in Hamedan province (Gamaciyab) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This study was carried out from 2001 to 2002 in Gamasyab River of Hamadan province of Iran in order toidentification of indigenous species of this water resource. The main objective of this study was to fish identification for scientific purposes, geographical distribution pattern, preparation atlas of the fishes, introduction of commercial species and awareness on ecological situation of their natural habitats. Also providing necessary information for conservation and sustainable use of these valuable stocks and minimizing environmental impacts of unsecured utilization. Sampling were carried out by selecting 15 sampling stations through the river and fishing by electro fisher and cast net. Identification accomplished by valid identification keys in species level. Photography and slides provides and 10 pieces of each species tagged by unique codes for preservation in national museum. 50 morphometric and meristic characteristics studied for scientific identification.. Indigenous fishes belong to 14 species, 10 genus, 3 family and 2 order. Indeed 2 exotic species belong to Cyprinidae and Salmonidae families recognized. From these indigenous species, 11 belong to Cyprinidae family and only one species belong to Sisoridae family.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Geographical ; Commercial ; Environmental ; Indigenous species ; Identification ; Fish ; Sampling ; Morphometric ; Cyprinidae ; Salmonidae ; Sisoridae
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 69pp.
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  • 3
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    Physico-chemical survey of balikhly Chi River from outlat of Yamchi dam (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Thise studies were conducted seasonaly in 9 sampling period 1n 1991 to assess the physico-chemical parameter status of water of Balikhly chie river (the region after yamchi dam) of Ardabil Provence in relation to its potential for aquaculture development. Water samples were collected by rutner sampler and analyzed for temperature, turbidity, conductivity, total hardness, chloride, COD, CO3 , HCO3,Ca, mg ,TSS ,PO4, NH4 ,NO2 ,NO3, SiO2, DO, SO4 . The water quality showed temporal and spatial variation in this study .The result revealed that the water were slightly alkaline with high total hardness and bicarbonate alkalinity which indicate high buffering capacity to pH changes .the ranged of dissolve oxygen concentration were beetwin7.6 to 13.7 mg/l with mean value of 10.98mg/l which were above the permissible oxygen cocentratio over all study site.the mean water temperature was 17.79 and ranged between 1.6 to 19.6 that is suitable for cold water fish culture while seasonal temperature variation showed that winter is desirable for hatcheries and other seasons for culture practices. Electrical conductivity value ranged between 873 to 1502 with mean of 1135 falls within the limits of suitable salinity ranges for rainbow trout culture. The turbidity and TSS ranged between 20-60FTU and 60168mg/l respectivelyThe levl of TSS concentration were little higer than80 ppm lmits..The values obtained for physicochemical parametersin Balikhly chie river were in conformity with recommended values for fresh water fish farming standared.The fish production potential based on water divertion and oxygen concentration over four study site from yamchi dam to downstream without applying any aeration systems were 38.6,27, 59 and 27 metric tons respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Lak yamchi ; Physic-chemical parameter of water ; Survey ; Sampling ; Turbidity ; Temperature ; Conductivity ; Hardness
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 52pp.
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  • 4
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    A survey on the effect of Cochlodinium sp. bloom on shrimp culture complexes and hatcheries activities in Bushehr Province (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The aims of this project was to inform and aware about the red tide condition before entering the algal bloomer in water resources to the hatcheries and farmed shrimp complexes in Bushehr province coastal. Field investigation and sampling have been carried out in the southern of the input water channels of Mond, Delvar and Helleh farmed shrimp complexes, which are located along the coastal of Bushehr Province, from April to December 2011 .The physic-chemical parameters such as pH, salinity and water temperature and also meteorological conditions were measured and recorded on the field. The water sampling has been lunched for determination of nutrients and chlorophyll - a, phyto- and zoo- planktons. No Cochlodinium.sp outbreaks have been detected in the studied area, during the study. The only bloom which reported by a fisherman, was outbreak in offshore of Bushehr province in Khoure Khan on 13th September 2011. The sample which transferred to the Iranian National Shrimp Research Institute was included Alexandrium.sp and its density was 2 million cells per liter. The identified phytoplanktons were belonged to three order of Bacillariophyceae (52.6%) with average density of 10778 cells per liter, Dinophyceae (37.7%) with density of 7731 cells per liter and Cyanophyceae (9.7%) with density of 1980 cells. 12 genera belonged to Dinophyceae , 25 genera of Bacillariophyceae and two genera of Cyanophyceae were observed during the study. The highest density of phytoplankton was recorded in Helleh station by 18374 cells per liter. The maximum density of phytoplankton was at Delvar station by 141120 cells per liter in December. The highest density of the phytoplanktons was belonged to Dinophyceae by 126000 by cells per liter of which the Alexandrium.sp had the density of 124500 cells per liter in August 2011. From the Dinophyceae the Alexandrium.sp with mean density of 20345 cells per liter, Ornithocercus 920 cells and Prorocentrum.sp 820 cells were the predominant species. The identified Zooplankton in were belonged to 8 branches and 19 groups. The highest density of zooplankton was recorded in Helleh station by 1194 no. per liter. Nauplii were the dominant zooplankton groups with an average density of 136.4 no. per liter, Tintinnids 98.7, Cyclopoida 60.8, Calanoida 35.7 and Harpacticoids 14.5 no. per liter . The average of water and air temperature was recorded 29.4 °C and 28.3 °C, respectively. Average of salinity was 41.2 and pH was 8.46. The average of depth in all stations was 5.7 m. The mean concentrations of silicate, nitrate, nitrite, ammonia and total phosphate were 1.99, 0.03, 0.009, 0.14 0.15 ppm, respectively and the average of chlorophyll - a was 0.94 mg.m-3.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physico-chemical ; Cochlodinium.sp ; Shrimp Culture ; Bloom ; Survey ; Hatcheries ; Sampling ; pH ; Salinity ; Temperature ; Chlorophyll a ; Phytoplankton ; Zooplankton ; Alexandrium.sp ; Bacillariophyceae ; Dinophyceae
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 79pp.
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  • 5
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    A survey on effects of shrimp aquaculture on the coastal waters of Bushehr (Helleh and Mond) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The effects of aquaculture industry on the environment were evaluated by studying the water quality of Bushehr costal water during culture season 2005 and 2006. The variations of selected parameters such as total phosphorus, ammonia, chlorophyll a, pH, salinity and... Were monitored in effluent canal, influent canal and open sea in Helleh and Mond regions as monthly. Following occurrence of White Spot Disease (W.S.D) in the shrimp ponds of Bushehr province, shrimp culture suspended and entrance of effluent waters completely were blocked since August 2005, despite the absence of aquaculture sewage evaluation of environment and sampling were continued. During releasing of sewage of shrimp ponds to the coastal waters of Bushehr in Jun 2005, the average amount of ammonia in Helleh and Mond were obtained to be 0.161 mg/l and 0.194 mg/l, however the average amount of total phosphorus in Helleh and Mond regions were 0.149 mg/l and 0.043 mg/l, respectively. Although effluent water suspension, amount of ammonia and total phosphorus were increased in both region especially in June 2006. Comparing present data in Jun 2005 and recorded data from culture period 1997-2003 with permitable range of municipal and aquaculture waste show that; aquaculture industry on both regions have not had any obvious negative effect on the coastal waters of Bushehr but it seems if other sources of pollutions in the region is not controlled, then the aquaculture industry can contribute to occurrence of environmental problems.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Environmental ; Survey ; Shrimp ; Aquaculture ; Phosphorus ; Ammonia ; Chlorophyll a ; pH ; Salinity ; White spot disease ; Sampling ; Pollution ; Coastal waters
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 73pp.
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  • 6
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    A study on environmental pollutants (pesticides, heavy metals & detergents) in surface water, underground water and wastewater of Mangol Dam basin (Mazandaran province) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: At the present study, the environmental pollutants such as organochlorine pesticides (OCPs), heavy metals (during three seasons) and surfactants (during four seasons) were done 2009 to 2010 that located in Mangol Dam with longitude and latitude 52° 22' 49" N and 43° 15' 43" E, respectively. The aims of this study were to determine the seasonal pollutants matters in water samples of under-groundwater and surface water in 12 stations and the results are as follow: The maximum residues fluctuations of OCPs were determined in between all water samples such as aldrin and endrin about 1.51 and 2.85 µg/l, respectively. The mean concentration of aldrin and endrin about 0.66 ± 0.59 and 0.71 ± 1.07 µg/l, respectively were determined. The maximum seasonal concentration of OCPs were detected in fall, winter and spring for such as endosulfan sulfate, γ-BHC, heptachlor, endrin aldehyde compounds about 2.85, 0.34, 0.14 and 0.14µg/l, respectively. The maximum seasonal percentage range of OCPs were detected in fall, winter and spring in water samples such as endosulfan sulfate, DDD and β-BHC were 42, 25 and 25 %, respectively. The maximum seasonal concentrations of Zn and Fe elements were detected in spring about 1.12 and 8.22 µg/l, respectively. Also for Hg in spring was determined about 17.2 mg/l. The mean concentration of Zn, Fe and Hg in water sampled were 0.23 ± 1.01 and 1.21 ± 2.00 µg/l, respectively and 4.65± 6.38 mg/l. The maximum seasonal percentage range of heavy metals were detected in fall, winter and spring in water samples such as Ni, Zn and Fe were 66, 83 and72%, respectively. The maximum seasonal concentrations of heavy metal were detected in Sorkhroud and Polechelave stations during fall, winter and spring for only Fe about 1.48, 3.3 and 8.22 µg/l, respectively. The maximum concentration of linear alkyl benzene sulfonate (LAS) in last month of summer was 971µg/l. The mean concentration of surfactant during fall, winter , spring and summer was 418.62 ± 52.16 µg/l. The maximum seasonal percentage range of surfactant uring fall, winter, spring and summer in all stations of sampling were 76, 76, 100 and 100 %, respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Organochlorine Pesticides ; OCPs ; Heavy Metals ; Surfactants ; Environmental Pollution ; Suface water ; Underground water ; Wastewater ; Samples ; Sampling
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 64pp.
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  • 7
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    Biomass estimation of demersal resources in the Persian Gulf and Oman Sea by Swept area method (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Regarding to monitor of demersal resources in the Persian Gulf and Oman Sea, and also biomass and CPUA estimation of them, eleven research cruises were carried out by using R/V Ferdows-1 equipped with bottom trawl, covering the area from 49º 00´ E in the west (borderline with Kuwait) to 61º 25´ E in the east (borderline with Pakistan) from 2009 to 2011. The study area was stratified into 17 strata (A to Q) of which 10 strata (A to J) were in the Persian Gulf and 7 strata (K to Q) were in the Oman Sea, covering the depths of 10-50 m in the Persian Gulf and 10-100 m in the Oman Sea. A total of 316 stations were randomly selected and the biomass and CPUA were estimated by swept area method. In 2009, due to the bloom of jellyfish, there was some problem for sampling and therefore made some bias in our estimation. Therefore, the biomass of jellyfish was excluded from all calculations. The comparison between two regions indicated that the percentage of density of demersal fishes in the Persian Gulf during years 2009, 2010 and 2011 were 1.5, 3.7 and 1.7 times more than the Oman Sea and totally 60-80% of total biomass was found for the Persian Gulf. Also a comparison among 17 strata the highest biomass was found for K region (Sirik to Jask) in the Oman Sea in 2009 & 2011; and C & D regions (Genaveh to Dayyer) in 2010 in the Persian Gulf. The same comparison was done for CPUA of commercial, non-commercial and total in both water bodies and it was found that in years 2009 and 2011 the regions of L (Jask to Meidani) and K (Sirik to Jask) in the Oman ; and 2010 the G region (Mogham to Farour) in the Persian Gulf had the highest value of this parameter. It can be concluded that the north-west of the Oman Sea has the best condition of biomass and CPUA of commercial and non-commercial demersal fishes; and on the contrary the low values were estimated for A region (north-west of the Persian Gulf) and P region (Konarak to Ramin) in the Oman Sea. With review the mean CPUA in defferent depth layers for years 2009, 2010 and 2011, it was concluded that with increasing the depth, the mean CPUA is decreased and the lowest CPUA belongs to depths of 50-100 m. The comparison between commercial and non-commercial groups in both ecosystems, it concluded that the density of commercial species were higher than non-commercial ones; and for years 2009, 2010 and 2011 the commercial species consist of 52.2, 57.1 and 59.7 % of total biomass. In all years the Persian Gulf indicated higher values than the Oman Sea. The most abundant fishes were Rays, Catfishes, Grunts, Japanese threadfin bream, Carangids, Hair tail, Barracuda and Lizardfish for both Persian Gulf and Oman Sea.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Commercial fishes ; Non-commercial fishes ; Biomass ; Catch per unit of area ; CPUA ; Sampling ; Density ; Species ; Catfishes ; Grunts ; Japanese threadfin bream ; Carangids ; Hair tail ; Barracuda ; Lizardfish
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 283pp.
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  • 8
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    Identification and density determination of juvenile fishes in Khouzestan coastal waters (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Aquatic animals possess specific biological characteristics and lifecycle. Without knowing about their biology and complete lifecycle, planning about their conservation can not be effective. Following the previous studies on fish larvae in Khuzestan coastal waters this study was done to determination catch composition and density of juvenile fishes in Khuzestan coastal waters during 2007 to 2008. Studied area included two main fisheries ground, Lifeh-Busafe in west and Bahrekan in east coasts. Monthly random sampling was carried out by using shrimp trawl net with Akhtar vessel. Juvenile fish's means the fishes that completed their larval cycle and are look like their parents but have not been matured yet. The catch mean, biomass, CPUA and the stock size of different species were estimated by using Swept Area Method. Totally 101485 caught fishes included 38 families and 63 species. The most abundant trawled fishes were Thryssa vitriostris Leiognathus bindus Ilisha melastoma Penahia macrophthalmus and Johnius belangerii .These five species contain about 80 %, the species Arius dussumieri and Cynoglossus arel 4.5% and 3.2 % respectively and the others 12% of total caught fishes. In the east coasts the species L. bindus I. melastoma T. vitriostris P. macrophthalmus and in the west coasts the species P. macrophthalmus T. vitriostris J. belangerii and I.melastoma were the most abundant. Among 63 identified fish species , juvenile fishes of 23 species were observed which contain 26.4 % of total caught fishes .the fishes Arius dussumieri and Acantopagrus latus 100%, Liza subviridis, Leiognathus lineolatus and Triacantuhus biaculeatus more than 80 % and Pomadasys stridens Lagocephalus inermis Saurida tumbil and Thryssa vitrirostris more than 50 % were observed as juvenile stage. The most abundant juvenile fishes were T. vitrirostris L. bindus and Arius dussumieri respectively. The maximum (1852 kg/km2) and the minimum (165 kg/km2) values of CPUA were estimated in west coasts in July and December respectively. The maximum (2677 kg/km2) and the minimum (153 kg/km2) values of CPUA were estimated in east coasts in June and August respectively. The biomass showed a distinct peak in June and July in east and west coasts respectively. The highest diversity index in east (2/22) and west (2.36) coasts were obtained in July. In present study the number of identified fishes is more than previous studies. Juvenile fishes spend their sensitive period of lifecycle in Khuzestan coastal waters. After growing in late spring, fish larvae enter to the juvenile stage and select this productive area as nursery ground. Increasing of juvenile fishes in July is accordance with their reproduction season in studied area. The east coasts are deeper than the west and there are some differences in hydrological characteristics due to discharging of the rivers Bahmanshir and Arvandrood in west coasts. The peaks of abundance in east and west coasts were observed with a clear time interval. The higher CPUA in east coasts can be caused due to gradual migration of juvenile fishes from west to east during cold season.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biological ; Hydrological ; Juvenile fishes ; Bottom trawl ; Catch composition ; Biomass ; Aquatic ; Larvae ; Density ; Sampling ; CPUA ; Species ; L. bindus ; I. melastoma ; T. vitriostris ; P. macrophthalmus ; J. belangerii ; Migration ; Coastal waters ; Identification
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 78pp.
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  • 9
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    Extraction‚ Purification, Identification and amount verification of Steroids, in Sargassum glaucescens and Padina boergesni algae in Oman Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Padina boergesenii is one of the most abundant brown algae distributed in the north of Persian Gulf and Oman Sea. In this study after sampling and preparation of Padina boergesenii by Chroform-Etanol (3-1) solvent and by Methanol has been extract. Separation and purification of the compounds was carried out using thin layer, general and inverse column chromatography, Cephadex and high-performance liquid chromatography (HPLC). Structural elucidation of the constituents was based on the data obtained from H-NMR, 13C-NMR, HSQC, HMBC, DEPT and Cephadex LH-20. The steroids compounds separated from above alga were identified as 22dehydrocholesterol (1), cholesterol (2), fucosterol (3), β-sitosterol (4), stigmasterol (5), ostreasterol (6) and two epimer of hyroxyestrol(7), based on their spectral data and from comparison with those previously reported in the literature.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Brown Algae ; Padina boergesenii ; Steroids compounds ; Extraction ; Purification ; Identification ; Amount verification ; Sargassum glaucescens ; Algae ; Abundant ; Sampling ; Chromatography ; Cephadex ; Dehydrocholesterol ; Cholesterol ; Fucosterol ; β-sitosterol ; Stigmasterol ; Ostreasterol
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 42pp.
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  • 10
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    Species composition monitoring in artificial reefs area in Khuzestan coastal waters (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This study was carried out in continuation of previous studies on artificial reefs monitoring in Khozestan coastal waters. The main purpose was the zoo species composition on and around the artificial reefs. Sampling was done from May 2012 to April 2013, from 4 stations in artificial reefs area. Reef structures were sampled by scuba diving. Physical and chemical parameters were measured and water quality status was determined by using WQS index. Zooplankton and macrozooplankton communities were sampled by 100 and 300 micrometer mesh size nets respectively. Benthic animal's samples from sediments around of the reefs body were collected by Ekman grab. Sediment characters, TOM and grain size were analyzed by using ignition loss and size series sieves methods respectively. Secondary production of macrobenthic animals based on dominant species length classes was estimated. Ichthyological information recorded by diver (census and video recording) and Gargoor traps were used for fishing effort calculation .Except for nitrite parameter (p〈0.05) in different stations and silica parameters (p〈0.05) in different months, other parameters were not shown significant differences in studied stations and months. The mean of zooplankton density was (914±52) N/m3 and the Copepoda species were the most abundant group (235 ±10) N/m3.Anosim analysis showed no significant differences in reefs specie composition. Different Crustacean groups were included more than 82 percent of macrozooplanktons communities. Among macrozooplankons, the mean density of decapoda, branchiopoda and copepoda were 302, 296 and 191.5 N/m3 respectively. The mean density of macrobenthic animals was 418±90.26 N/m2 and mollusk, crustacean and polychaets were the most abundant benthic animals respectively. During the study period, total macrobenthos biomass 11.37 g-wet/m2 and its mean value 2.84 g -wet /m2, were estimated. Annual production for polychaets and crustacean groups 154g-wet/m2 and 182 g-wet/m2 were estimated respectively. Annual production of total macrobenthic animals was about 675 g-wet/m2/y. According to sediment analysis, the range of silt-clay (8.7-95.6)% and seasonal mean TOM (4.47-13.25)% were calculated in studied stations. According to attached organisms biomass (wet weight), Cnidarian Anthozoa class with (88)% was the most abundant and then sponge (10)%, Cnidarian Hydrozoan class and arthropoda each one with 1% were included total attached organisms. Due to high biomass of Anthozoa species the most abundant mean was observed in spring season. The Malacostraca group especially Crustacean (72)% was the main mobile animals on reef bodies and then Echinodermata (Ophiurida and marine Orchids) (18)%, Mollusca (Bivalves and Gastropods) (4)% and Polychaets (3)% were the main mobile organisms. The range of Shannon diversity index was (3.22-3.46) and (2.44-3.38) in studied stations and months respectively.Totaly in studied area, the number 15 fishes species were observed and Sparidae family with 3 species were the diverse fish family.The fish Hamour (Epinephelus coiodes,Seranidae) (87)% was presented in all studied months and stations. After Hamour the Neopomacentrue sindensis and Diplodus sargus Kotschyi were the most abundant fishes. The maximum and the minimum of hamour catch per unit effort were in reef B in spring and reef C in autumn respectively .Data comparing showed that except for nitrite the other physical and chemical parameters were observed in the same range by 2005-2007 study. According to obtained results, Zoo communities in different part of ecosystem showed greater diversity than to past years and in comparing to mudflat coastal waters in Khozestan waters, new ecosystem has been created in the region. High diversity of different animal groups that were disperses in water column in early phases of its life and need to settlement to substrate to continuing the life were observed in area. Attached animals plays an important role in biological and ecological characters in the coastal area.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physical ; Chemical ; Ecological ; Biological ; Species ; Artificial reefs ; Sampling ; Zooplankton ; Fishing ; Macrozooplanktons ; Decapoda ; Branchiopoda ; Copepoda ; Polychaeta ; Sponge ; Anthozoa ; Mollusca ; Bivalves ; Gastropods
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 134pp.
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