Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
DETEMINATION OF CHEMICAL AND BIOCHEMICAL COMPOSITION OF ARTEMIA URMIANA CYST SHELLS AND ITS EXTRACTION CHITIN
1
12
FA
Y.
Asadpor
Uromia
A.
Shoja alsadati
Tehran
A.
Ghoroghi
Tehran
ahmadghoroghi@hotmail.com
M.
Kalbasi
Noor
kalbassi_m@modares.ac.ir
A.
Khosroshahi
Uromia
10.22092/isfj.2004.113696
Artemia urmiana cyst shells collected, purified and dried from ashore of Rashkhan and Bozorgrah in the Urmia Lakein January and February 2002.<br />According to the results obtained by standard methods of analyses the cyst shell contains: 4.8±0.5% lipid, 32±2% protein, 10.5±1.0% moisture, 0.5±0.2% haematin and 20.6±2.0% total ash.<br />The chemical composition of ash are: Na<sub>2</sub>O 1.98%, MgO 1.14%, S0<sub>3</sub> 6.82%, CI 3.23%, K<sub>2</sub>0 2.12%, CaO 4.05%, Fe<sub>2</sub>O<sub>3</sub> 1.68%, Zn 0.05%. The chitin was extracted from Artemia cyst shells by using different methods of demineralizaion, delipidization, deproteinization and decolorization. The yield of extraction from cyst shells was 28±3%. <br />Composition of chitin was determined by FTIR, X-Ray Powder diffraction and C.H.N.O analyser.<br />Artemia urmiana cyst shell contains approximately about 28±3% percentage chitin.
Artemia urmiana,CHITIN,CYST SHELL,CHEMICAL AND BIOCHEMICAL
https://isfj.areeo.ac.ir/article_113696.html
https://isfj.areeo.ac.ir/article_113696_df34fe0269fa971518a53f89b754ecad.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
COMPARATIVE STUDY ON NUTRIENT COMPOSITIONS OF KUTUM (RUTILUS FRISII KUTUM) AND GRASS ARP (CTENOPHARYNGODON IDELLA) AND THEIR MARINADE QUALITIES
13
28
FA
R.
Esmaeilzadeh kenari
Gorgan
reza_kenari@yahoo.com
M.
Sahari
Tehran
Z.
Hamidi esfehani
tehran
10.22092/isfj.2004.113697
<span>The Caspian kutum, Rutilus frisii kutum, and grass carp, Ctenopharyngodon idella are two commercially important fishes with similar external features, the first one being endemic to the </span>Caspian Sea<span>, and the second one is cultured in freshwater polyculture system.</span><br /><span>In this study the nutrient composition of these fishes were compared. Then with the intention of better shelf-life, their hot processed marinades were organoleptically analysed at intervals of 2, 4, 6 and 8 months, using Total Volatile Nitrogen (T.V.N) and peroxid values.</span><br /><span>The comparison of the fish composition with Duncan test showed no significant difference (p< %5) in average amount of protein, ash and energy content, but significant difference in amount of lipid, P, Ca content, iodine value, saponification value, acid value, peroxide value (at 0,1,3,5 and 7 days after oil extraction) was observed. It means that lipid content, peroxide value and acid value in kutum were higher than grass carp (0.93%, 1.5 mEq/kg and 4.33% fatty acid according to oleic acid, respectively), and Ca, P contents, iodine value and saponification value, on the other hand, were higher in grass carp (39.89 and 12.01 mg/100g , 6.20 %12 and 8.62 mgKOH/g, respectively). The organoleptic results showed that the produced marinade from grass carp (according to variance analysis) is perferable than the other one. Also, it was found that this marinade can be stored during 6 months at 10°C in good condition.</span>
NUTRIENT COMPOSITIONS,MARINADE,RUTILU~ FTIYII KUTUM,Ctenopharyngodon idella,Caspian Sea,Iran
https://isfj.areeo.ac.ir/article_113697.html
https://isfj.areeo.ac.ir/article_113697_f41db64bfa10ce14c19f32ef404d79d0.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
THE BIOMASS AND DISTRIBUIION OF PSEUDOCUMIDAE IN THE SOUTHERN-WEST COASTS OF THE CASPIAN SEA (GUILAN PROVINCE)
29
40
FA
S.
Bagheri
Anzali
sia_bagheri@yahoo.com
Sh.
Abdolmaliki
Anzali
abdolmalaki2014@gmail.com
10.22092/isfj.2004.113698
<span>The most part of the fauna population in the </span>Caspian Sea<span> comprised invertebrates that is dominated by benthic organisms. Cumacea belongs to Arthropoda phylum, class of Crustacea and has an important role as food for sturgeon fishes in the </span>Caspian Sea<span>. This study was performed from autumn 1992 to summer 1993 in sixteen transects and each transect had four stations located at 10,20, 50 and 100 m depths.</span><br /><span>The survey revealed that the maximum mean biomass of this family was observed at 10 m depth in transect 15 with 9.62 gim2 and the minimum was observed at 20 m depth in transect 1 with 0.07 g/m</span><sup>2</sup><span>. The greatest biomass of this family was observed in spring with average biomass of 6.48 g/m</span><sup>2</sup><span> and the lowest biomass was observed in autumn-winter with average biomass ofl.47 g/m2. The maximum and minimum mean biomass was observed at 100 m and 10 m depths respectively. The average biomass of this benthos had significant differences in different depths and seasons (P<0.05).</span><br /><span>The amount of T.O.M had high and considerable changes in different depths with a range of 3.55-10.37% for depths of 10 to 100m, respectively. Also the maximum percentage of sand in sediment was observed in 10m depth with value of 58.64% and minimum value was 34.73% in 100m depth. The mean biomass of this aquatic organism was 4.75 ± o.45 g/m</span><sup>2</sup><span> in eastren area and 3.59±0.31 g/m</span><sup>2</sup><span> in western area of this province. Nonparametric statitical analysis of Kruskal- Wallis showed significant diffrence between mean biomass in this two areas (P < 0.05).</span>
CUMACEA,biomass,Guilan province,Caspian Sea,Iran
https://isfj.areeo.ac.ir/article_113698.html
https://isfj.areeo.ac.ir/article_113698_dfdb8b3ece6455512637a57f3715c42f.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
TOXICITY AND LC50 DETERMINATION OF PHENOL AND 1-NAPHTOL IN CASPIAN KUTUM AND BREAM FINGERLINGS
57
68
FA
F.
Shariyati
Rasht
shariat_20@yahoo.com
A.
Esmaeili sari
Noor
esmaili@modares.ac.ir
M.
Piri
Gorgan
10.22092/isfj.2004.113699
<span>In this investigation acute toxicity of phenol and 1-naphthol were determined based on OECD guideline in the laboratory. Experimental fishes were Caspian kutum (Rutilus frisii kutum) and bream (Abramis brama orientalis). Static bioassays were used for acute toxicity tests during the period of 96 hours and all of important physicochemical parameters of water including pH, dissolved oxygen, hardness, temperature and conductivity were monitored continuously and maintained at a constant value. Five treatments were used and three replicates run for each treatment.</span><br /><span>The 96h LCSO values of phenol and 1-naphthol for Caspian kutum and bream were 21.5928 and 2.1544 mg/lit and 25.1880 and 2.8490 mg/lit, respectively.</span><br /><span>The Maximum Allowable Concentration (MAC) of phenol in Caspian kutum and bream were 2.1593 and 2.5188 mg/lit, respectively. The MAC value of 1-naphthol in Caspian kutum and bream were 0.2154 and 0.2849 mg/lit, respectively. It is evident from the results of the present study that Caspian kutum is more sensitive comparing to bream and the toxicity of I-naphthol is higher than phenol.</span>
1-NAPHTOL,CASPIAN KUTUM,BREAM,Toxicity
https://isfj.areeo.ac.ir/article_113699.html
https://isfj.areeo.ac.ir/article_113699_f675df8e0da8d18b4b7b472b985d91a9.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
DETERMINATION OF LC50 AND HISTOPATHOLOGICAL CHANGES DUE TO ENDOSULFAN IN BELUGA (HUSO HUSO)
69
84
FA
I
Sharifpor
tehran
isharifpour@yahoo.com
M.
Soltani
tehran
M.
Javadi
Noor
10.22092/isfj.2004.113700
<span>This study was conducted in order to determine the LCSO of organochlorine insecticide, Endosulfan, lethal limit, Maximum Allowable Toxicant Concentration (MATC), clinical signs and histopathological changes in vital organs due to the toxic effects of the toxin on beluga (Huso huso).</span><br /><span>The experimental investigation was done at 20°C water temperature using 35% emulsion of ndusolfan and Organisation Economic Cooperation and Development (OECD) method. For this purpose 150 specimens of this species with 3-5g body weight were used in static water quality condition during 4 days.</span><br /><span>A LCso of 0.0063, 0.0016, 0.0006 and 0.0003 ppm and also a MATC of 0.00063, 0.00016, 0.00006 and 0.00003 ppm, were determined at 24, 48, 72 and 96 hours post exposing, respectively. The affected fish showed irregular swimming, whirlling, convulsion and bottom sitting behaviours as well as pale colour and respiratory disorders resulted in a short time death specially in high concenteration of endosulfan. Histopathologically, hyperaemia, swelling and separating basement membrane of gill lamellae were evident in fishes exposed to high concenteration (≥1ppm) of endosulfan. Also congestion, and necrosis of kidney, blood congestion, hepatocytes degeneration and to some extent, necrosis were observed in the liver of affected fishes. According to the lethal limit and LCso results (< %0.1), this insecticide should be considered as a very high toxic (VHT) chemical substance for beluga fingerlings causing a rapid and accumulative mortality in this species.</span>
LC50,ENDOSULFAN,HWO HWO,Beluga,Histopathology,Iran
https://isfj.areeo.ac.ir/article_113700.html
https://isfj.areeo.ac.ir/article_113700_0353d3ad9dc4bddba1bb15a9df21d142.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
a
85
96
FA
Sh.
Oryan
tehran
sh_oryan@yahoo.com
H.
Hosseinzadeh
tehran
h_hosseinzadeh@yahoo.com
S.
Ebdali
tehran
10.22092/isfj.2004.113701
در این تحقیق خصوصیات بافتی تخمدان ماهی تون زردباله (گیدر) (Thunnus albacares) در دریای عمان طی اسفند ماه 1376 تا آبان ماه 1377 مورد بررسی قرار گرفت. تخمدان 40 عدد ماهی تون زردباله نمونه برداری و در محلول بوئن تثبیت گردید. نمونه ها مطابق روش استاندارد بافت شناسی، آبگیری، شفاف سازی و پارافینه شده و سپس مقاطع 5 میکرونی از آنها تهیه و بوسیله میکروسکوپ نوری مورد مطالعه قرار گرفتند. تخمدان گونه فوق فاقد (Germinal disk) می باشد. تفاوت بافتی بین سه بخش میانی، ابتدائی و انتهایی تخمدان در هیچ یک از مراحل جنسی وجود ندارد ) 01/0 (P<. چهار مرحله جنسی شامل: نابالغ، در حال بلوغ، در حال رسیدن و رسیده در ماهیهای آزمایش شده مشاهده گردید. اندازه قطر اووسیت در تخمدان طی روند اووژنز دارای مراحل: نابالغ (کمتر از 20 میکرون)، در حال بلوغ (بیشتر از 40 میکرون)، در حال رسیدن (کمتر از 60 میکرون) و رسیده (120 میکرون) بوده و در مجموع تخمدان این ماهی از نوع ناهماهنگ (Asynchronous) می باشد.
https://isfj.areeo.ac.ir/article_113701.html
https://isfj.areeo.ac.ir/article_113701_fdd58dc499bd090a9bdc689cfad6a300.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
FUNGAL FLORA OF CULTURED GREEN TIGER SHRIMP (PENAEUS SEMISULCATUS) IN BUSHEHR PROVINCE
97
110
FA
B.
Ghaednia
Bushehr
F.
Zeini
tehran
M.
Mehrabi
tehran
drmehrabii@yahoo.com
J.
Hashemi
tehran
Sh.
Dadgar
tehran
shdadgar@yahoo.com
M.
Mirbakhsh
Bushehr
10.22092/isfj.2004.113702
<span>One of the pathogenic agents for live creatures are fungi. They have wide distribution and spores of them is everywhere, however, fungi as well as other organisms, are the pathogenic agents in shrimps. The best example for the diseases caused by fungi in adult and juvenile shrimps are Black gill disease and larval mycosis. In this study 578 specimen of Green tiger shrimp of Bushehr province area (Helleh site) were investigated. Totally 719 fungal colonies were isolated and identified from shrimp surface, gill, haemolymph, hepatopancreas and water of pools. The results of fungal identification were: 526 mould colonies, 179 yeast colonies, 12 strile mycelia and 2 unknown colonies. Aspergillus spp. (9.45%), Fusarium spp. (7.78%); Cladosporium spp. (6.35%), Aspergillus niger (6.11%), Rhodotorula rubra (5.98%), Aspergillus flavus (5.98%), Penicillium spp. (5.84%), Alternaria alternata (5.28%), Candida albicans (5.28%) and Candida spp. (5.14%) were dominant genera and species among the identified fungi in order of frequency, and 37.60% were other fungi species. None of the isolated Cladosporium spp. matched with pathogenic criteria. Two isolated (4.65%) of A. flavus are proved to be able to produce Aflatoxin.</span>
FUNGAL FLORA,PENAEUS SEMISULCATUS,Bushehr Province,Iran
https://isfj.areeo.ac.ir/article_113702.html
https://isfj.areeo.ac.ir/article_113702_36e76a464ef2fa99f5276f6449eb4a27.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
INFLUENCE OF SOME MICROELEMENTS ON THE LEVEL OF PROTEOLYTIC ENZYMES AND ALKALINE PHOSPHATASE ACTIVITY IN DIGESTIVE SYSTEM OF JUVENILE BELUGA (LIUSO HUSO)
111
126
FA
R.
Ghorbani
Bushehr
A.
Kamali
Gorgan
kamali.abolghasem@gmail.com
A.
Nivaloni
Russia
A.
Hajimoradlo
Gorgan
a_hajimoradloo@gau.ac.ir
M.
Porkazemi
Rasht
pourkazemi@sturgeon.ir
10.22092/isfj.2004.113703
<span id="ContentPlaceHolder1_lblAbstract"><span>Influence of microelements; Zinc (as ZnCI<sub>2</sub>), Nickel (NiCI<sub>2</sub>.H<sub>2</sub>0), Cobalt (CoCI<sub>2</sub>) Manganese (MnCI<sub>2</sub>.2H<sub>2</sub>0), Iron (FeCl<sub>2</sub>) and Copper [copper chloride CuCI<sub>2</sub>, copper sulphate CuSO<sub>2</sub>.5H<sub>2</sub>0, copper acetate (CH<sub>3</sub>COO)<sub>2</sub>Cu.2H<sub>2</sub>0 and copper nitrate Cu(NO<sub>3</sub>)<sub>2</sub>,3H<sub>2</sub>0 on the level of total alkaline protease activity (trypsin with enzymatical code (E. C) 3.4.21.4, chimotrypsine E.C. 3.4.21.1 and different peptidases) in intestinal mucosa, acidic protease activity (pepsin E. C.3.4.23.1) in the stomach mucosa and alkaline phosphatase activity (E.C.3.1.3.1) in the pyloric caecaes in juvenile beluga (Huso huso) were measured.<br />This study was done in vitro condition with five replicants of 1 and 1×10<sup>-4</sup> mg/l of ions Zn<sub>2+</sub>, Ni<sup>2+</sup>, Co<sup>2+</sup>, Mn<sup>2+</sup>, Fe<sup>2+</sup> and Cu<sup>2+</sup>. 217 specimens of juvenile beluga with an average weight of 25±7 g, necropsied and necessary organs were removed and freezed as soon as possible. The frozen organs were thawed and the experiments were followed. The results showed that, in most of treatments, the level of enzyme activities were less than control. The level of total alkaline protease activity under influence of copper nitrate with a dose of 1mg/l in the intestinal mucosa and the level of acidic protease activity, under influence of zinc with a dose of 1×10<sup>-10</sup> mg/l in the stomach mucosa, were significantly more than control (P < 0.05). Also, the level of alkaline phosphatase activity, under influence of copper nitrate with a dose of 1×10<sup>-10</sup> mg/l in pyloric caecaes, was significantly more than control (P < 0.05).</span></span>
Beluga,Huso huso,Microelements,PROTEOLYTIC ENZYMES
https://isfj.areeo.ac.ir/article_113703.html
https://isfj.areeo.ac.ir/article_113703_38b71e366b650fc69de7f72e8b48f155.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
THE RELATIONSHIP BETWEEN OIL POLLUTIONS AND DENSITY OF PEARL OYSTER (PINCTADA FUCATA) IN THE PERSIAN GULF
127
147
FA
F.
Kafilzadeh
Jahrom
A.
Esmaeili sari
tehran
esmaili@modares.ac.ir
M.
Fatemi
tehran
Gh.
Vosoghi
tehran
Sh.
Jamili
tehran
isfj@areo.ir
10.22092/isfj.2004.113704
<span>The pearl oyster (Pinctada fucata) is considered as a valuable resources in the </span>Persian Gulf<span>. The aim of this research was to investigate the impact of petroleum hydrocarbons on density as well as destruction of this oyster. For this purpos, the Lavan region (Dardur, Hedabad, Chalil), Nakhilou and Hendurabi were chosen as the present habitat of the pearl oyster and Bostaneh, Moghooyeh, Molou and Geshe as the former habitat.</span><br /><span>The statistical analysis showed that the amount of petroleum hydrocarbons in sediments and soft tissues of oysters of Lavan stations is significantly different and Lavan region due to being close to oil terminals is more polluted. Meanwhile in winter petroleum hydrocarbons was found more than summer. Regarding to the density of oyters, it can be concluded that in present habitats with the increase of petroleum hydrocarbons in the body of oysters and sediments, the density of oyster was decreased.</span>
PETROLEUM HYDROCARBONS,PINCTUDA FUCATA,Persian Gulf,Iran
https://isfj.areeo.ac.ir/article_113704.html
https://isfj.areeo.ac.ir/article_113704_d633e9c7292326cab174d77e9ad7a9b8.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
INDUCTION OF T ETRAPLOIDY IN RAINBOW TROUT (ONCHORHYNCHUS MYKISS) BY HEAT SHOCK
143
152
FA
M.
Kalbasi
Noor
kalbassi_m@modares.ac.ir
A.
Bagheri
Noor
M.
Pourkazemi
Rasht
pourkazemi@sturgeon.ir
H.
Abdolhai
tehran
hossein_abdolhay@yahoo.com
10.22092/isfj.2004.113705
<span id="ContentPlaceHolder1_lblAbstract"><span>This study has been conducted for determination of optimum time and duration of thermal shock on tetraploidy induction in Rainbow trout. This study was carried out by induction of 28°C thermal shock in different times after fertilization (49.5, 54.0, 58.5, 63.0, 67.5, 72.0, 76.5 and 81,0°C/hour and different duration (8, 10 and 12 min).<br />Nuclear erythrocytes, cellular area and volume measurement were determined among blood smears of fingerling and statistic analysis showed that, induction of tetraploidy was conducted between 0-75% on various treatment, but highest tetraploidy yield (8.4%) was achieved by thermal shock on 28°C within 12 minutes, 74 degree-hour after fertilization.<br />Moreover, tetra ploidy diagnostic was also approved by determination of nucleolus number in fishes. In this respect tetraploid and diploid fishes have 3-4 and 1-2 nucleolus, respectively.</span></span>
TETRAPLOIDY,ONCHORHYNCHUS MYKISS,THERMAL SHOCK
https://isfj.areeo.ac.ir/article_113705.html
https://isfj.areeo.ac.ir/article_113705_2003510172fca39d82c636cc39575757.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
NATURAL FEEDING OF JOHN(S) SNAPPER (LUTJANUS JOHANI) IN THE PERSIAN GULF (HORMUZGAN PROVINCE WATERS) IRAN
153
162
FA
I
Kamali
Bandarabbas
kamalyeassa@yahoo.com
T.
Valinassab
tehran
t_valinassab@yahoo.com
10.22092/isfj.2004.113706
<span>Since a little information is available in relation with feeding of Lutjanus johni, this study was conducted to determine its food diversity. 613 specimens were studied from May 1996 to July 1997 and their dietary regim was defined. In this study, capacity vacuous index (CV) and food preference (Fp) calculated for this fish. </span><br /><span>The study of stomachs showed that stomach of 44 fish were full, 27 semifull and 524 were empty. CV was obtained 88.4 and Fp for crustacean (55.6), fishes (44.3) and molusca (1.4).</span><br /><span>In particularly study, Fp calculated for crab (54.0), squilla (23.2), shrimp (20.2) and lobster (2.5). Ultimately, in this survey was found that this fish possibly is fast feeder and crustacean to be omposed their main food. Among crustacean, crab is main food.</span>
Feeding,LUTJANUS JOHANI,Persian Gulf,Iran
https://isfj.areeo.ac.ir/article_113706.html
https://isfj.areeo.ac.ir/article_113706_1c8415bec68cda204cd961c62fbe3493.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
IDENTIFICATION OF FISHES IN QANATS OF BIRIAND
163
172
FA
M.
Meshkani
Birjand
M.
Porkasmani
Birjand
10.22092/isfj.2004.113707
<span id="ContentPlaceHolder1_lblAbstract"><span>In order to identify the fishes of Qanats in Birjand area located in north-east of Iran, a series of sampling were carried out during 2001-2002, with covering 44 Qanats. The samples were collected by net and after fixation in 10% formaline, they were transferred to laboratory for further precise identification.<br />At the end, there were found only 2 species of Capoeta fusca and Garra rossica belong to Cyprinidae family. Also, some samples were sent to Canada for attesting the identifications.<br />It was found that the Capoeta fusca is an endemic species and geographically is only found in eastern part of Iran.</span></span>
QANAT,CAPOETA FUSCA,GARRA ROSSICA,BIRJAND,Iran
https://isfj.areeo.ac.ir/article_113707.html
https://isfj.areeo.ac.ir/article_113707_159e97a0b4f0ffeddf9e86db2c5eb2b5.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
EVOLUTION OF RUSSIAN STURGEON STOCKS (ACIPENSER GUELDENSTAEDTII) IN THE SOUTHERN CASPIAN SEA, IRAN
173
192
FA
M.
Moghim
Sari
mehdi.moghim@gmail.com
10.22092/isfj.2004.113708
<span>The changes of Russian sturgeon stocks in the southern </span>Caspian Sea<span> was studied by measuring and considering different population parameters such as fish length, weight and age and also fluctuation of catch and catch per unit effort.</span><br /><span>Amount of catch and biomass showed an descending trend during last 3 decades. In 1971-72 catch and CPUE of Russian sturgeon had been 837 tons and 602 kg/boat/day and was decreased up to 57 tons and 0.34 kg/boat/day in 1999. </span><br /><span>The abundance of young fishes was decrease during last decade and older fishes have been dominated at present. </span><br /><span>Because of a sharp decrease of sea ranching of Russian sturgeon fingerlings and consequently decrease of young fish abundance, therefore it is predicted that amount of catch will be considerably declined in the future.</span>
STOCK ASSESSMENT,ACIPENSER GUELDENSTAEDTII,SOUTHERN CASPIAN SEA,Iran
https://isfj.areeo.ac.ir/article_113708.html
https://isfj.areeo.ac.ir/article_113708_a47c545bb5febd4b30f9aa300b22e8f7.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
SPECIES COMPOSITION AND ABUNDANCE OF FISHES IN AMIRKELAYEH WETLAND
193
206
FA
Sh.
Nezami balochi
Lahijan
H.
Khara
Lahijan
hosein.khara@gmail.com
10.22092/isfj.2004.113709
<span>In order to determine the species composition and abundance of fishes in Amirkelayeh International wetland a series of seasonal survey were carried out in 2001-2002. The samples were collected by different methods of gillnet, beach seine, castnet, electroshocker and dipnet. After catching the fishes, they were transfered to the laboratory for further species indentification.</span><br /><span>A total of 1639 specimens were collected that belong to 7 orders, 9 families, 15 species and subspecies. The identification orders were: </span><br /><span>Cypriniformes, Salmoniformes, Syngnathiformes, Cyprinodontoformes, Siluriformes, Perciformes and Gasterosteiformes.</span><br /><span>Among different orders, the order of Cypriniformes and Gasterosteiformes and among different families, the Cyprinidae and Cobitidae and among different species, Perca jluviatilis and Scardinius erythrophthalmus had the most and the least abundance, respectively. The stock of Tinca tina and Esox lucius were so high. </span><br /><span>It should be noticed that three species of Cyprinus carpio, Scardinius erythrophthalmus and Cobitis taenia were found for the first time in this wetland.</span>
FISH SPECIES COMPOSITION,Abundance,AMIRKELAYEH WETLAND,LAHIJAN,Iran
https://isfj.areeo.ac.ir/article_113709.html
https://isfj.areeo.ac.ir/article_113709_4b2f3afe541176878421a2dc11287115.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
12
4
2004
02
20
a
207
213
FA
A.
Malolahi
Bushehr
M.
Mirbakhsh
Bushehr
A.
Najdian
Bushehr
10.22092/isfj.2004.113710
https://isfj.areeo.ac.ir/article_113710.html
https://isfj.areeo.ac.ir/article_113710_e921c41cda3831c1c44e9138547ef2fe.pdf