Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
5
4
1997
02
19
Heavy metal determination in fish species of Anzali Lagoon
Heavy metal determination in fish species of Anzali Lagoon
1
16
116069
10.22092/isfj.1996.116069
FA
M.
Sadeghi Rad
Journal Article
2018
03
14
An investigation of the transference of five heavy metals, Zinc, Cobalt, mercury, lead and cadmium to the edible portions of commercially valued fish species Esox lucius (3-7 years) Carassius auratus (3 - 6 years) Cyprinus carpio (3 - 8 years) Hypophthalmichthys molitrix (1 - 3 years) was conducted. The concentration of Zn, Co, Pb, and Cd were measured using Flame Atomic Absorption Spectrophotometer and Hg with Flameless Atomic Absorption using cold mercury vapour. Average accumulated levels of Zn, Cd, Co, Pb and Hg in the muscle tissue of the fishes under survey were 17.28 ± 4.80 ppm, 0.025 ± 0.021 ppm, 0.693 ± 0.48 ppm and 1.04 ± 0.60 ppm of dry weight (X STD) respectively. Detected concentrations at present study do not exceed from tolerance levels based on WHO standards, except in six year old pike specimens sampled in an area exposed to industrial effluents which tend to reach critical levels. Thus this study shows that for the conservation of the Anzali Lagoon and the prote.....
An investigation of the transference of five heavy metals, Zinc, Cobalt, mercury, lead and cadmium to the edible portions of commercially valued fish species Esox lucius (3-7 years) Carassius auratus (3 - 6 years) Cyprinus carpio (3 - 8 years) Hypophthalmichthys molitrix (1 - 3 years) was conducted. The concentration of Zn, Co, Pb, and Cd were measured using Flame Atomic Absorption Spectrophotometer and Hg with Flameless Atomic Absorption using cold mercury vapour. Average accumulated levels of Zn, Cd, Co, Pb and Hg in the muscle tissue of the fishes under survey were 17.28 ± 4.80 ppm, 0.025 ± 0.021 ppm, 0.693 ± 0.48 ppm and 1.04 ± 0.60 ppm of dry weight (X STD) respectively. Detected concentrations at present study do not exceed from tolerance levels based on WHO standards, except in six year old pike specimens sampled in an area exposed to industrial effluents which tend to reach critical levels. Thus this study shows that for the conservation of the Anzali Lagoon and the prote.....
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
5
4
1997
02
19
Studying the manner of sturgeon fishes migration to Gorganrud and Tajan rivers
Studying the manner of sturgeon fishes migration to Gorganrud and Tajan rivers
17
30
116083
10.22092/isfj.1996.116083
FA
F.
Laloei
Journal Article
2018
03
17
One year study was carried out to understand the sturgeon fish’s migration to Gorganrud & Tajan Rivers from September 1993. Two different catching stations were selected in each river with gillnetting method. The fish were assessed biometrically, labelled and released afterwards the catching was done during Autumn and Spring and no fish was captured in Autumn, but 28 fishes (10 fishes of Acipenser stellatus + 15 fishes of Acipenser persicus + 3 fishes of Acipenser gueldenstaedtii) in Gorganrud and 11 fishes (2 fishes of Acipenser persicus + 9 fishes of Acipenser stellatus) were caught during the catching period, in spring. The result showed that among the labelled fishes at the station NO. 1 in Gorganrud, only 2 labelled fishes were recaptured in the Station No.2 (8 kilometers away from each other). The rest and all the labelled fishes in Tajan River were caught before reaching to the station No.2 by unauthorized fishermen. The main obstacles to sturgeon fish’s migration in bot.....
One year study was carried out to understand the sturgeon fish’s migration to Gorganrud & Tajan Rivers from September 1993. Two different catching stations were selected in each river with gillnetting method. The fish were assessed biometrically, labelled and released afterwards the catching was done during Autumn and Spring and no fish was captured in Autumn, but 28 fishes (10 fishes of Acipenser stellatus + 15 fishes of Acipenser persicus + 3 fishes of Acipenser gueldenstaedtii) in Gorganrud and 11 fishes (2 fishes of Acipenser persicus + 9 fishes of Acipenser stellatus) were caught during the catching period, in spring. The result showed that among the labelled fishes at the station NO. 1 in Gorganrud, only 2 labelled fishes were recaptured in the Station No.2 (8 kilometers away from each other). The rest and all the labelled fishes in Tajan River were caught before reaching to the station No.2 by unauthorized fishermen. The main obstacles to sturgeon fish’s migration in bot.....
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
5
4
1997
02
19
A biological investigation into anchovy kilka (Clupeonella engrauliformis) in Anzali fishing ground, in 1993
A biological investigation into anchovy kilka (Clupeonella engrauliformis) in Anzali fishing ground, in 1993
31
42
116084
10.22092/isfj.1997.116084
FA
F.
Parafkandeh
F.
Jamalzad
Journal Article
2018
03
17
In the recent years the Kilka fishing in Iranian coastal waters boosted rapidly. The rich stock of Kilka has provided the possibility of apt exploitation. Among the three Kilka species, dwelling in the Caspian Sea, 90% of Iran's catch consists of Clupeonella engrauliformis. Analyses of Data show that the sex ratio varies widely with the change of season. In autumn the spawning reaches to the peak and the female population declines in catching. The oil fat content and intensity of feeding in both sexes did not reveal significant differences. Average size range is 194.91mm in summer und 97.97mm in winter. Length frequency in both sexes varies from 100 to 110mm, but the female size range changes are wider. Mean weight of Anchovy Kilka is 7.84g in spring and 5.92g in winter. The research also shows that in winter large size Kilka are distributed at the deepest area of the sea. Therefore, it is suggested that to catch the Kilka, fishing operation should be done at deeper depth......
In the recent years the Kilka fishing in Iranian coastal waters boosted rapidly. The rich stock of Kilka has provided the possibility of apt exploitation. Among the three Kilka species, dwelling in the Caspian Sea, 90% of Iran's catch consists of Clupeonella engrauliformis. Analyses of Data show that the sex ratio varies widely with the change of season. In autumn the spawning reaches to the peak and the female population declines in catching. The oil fat content and intensity of feeding in both sexes did not reveal significant differences. Average size range is 194.91mm in summer und 97.97mm in winter. Length frequency in both sexes varies from 100 to 110mm, but the female size range changes are wider. Mean weight of Anchovy Kilka is 7.84g in spring and 5.92g in winter. The research also shows that in winter large size Kilka are distributed at the deepest area of the sea. Therefore, it is suggested that to catch the Kilka, fishing operation should be done at deeper depth......
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
5
4
1997
02
19
Preliminary study of silk thread growth in pearl oyster (Pinctada fucata)
Preliminary study of silk thread growth in pearl oyster (Pinctada fucata)
43
48
116085
10.22092/isfj.1997.116085
FA
S.
Ghorbani
Journal Article
2018
03
17
In This study it was prepared about 100 individual pearl oyster in average (D.V.M) 21-60 mm of Nakhiloo, and after Cutting byssus gland, in the laboratory the number and time of their attach to substrata were studied. It was considered that there was a significant difference between times (6 hours in the first observation and 13 hour in the second) and the number of attached oyster to substrata in the preliminary study. Also the oysters with height were more attached to substrata......
In This study it was prepared about 100 individual pearl oyster in average (D.V.M) 21-60 mm of Nakhiloo, and after Cutting byssus gland, in the laboratory the number and time of their attach to substrata were studied. It was considered that there was a significant difference between times (6 hours in the first observation and 13 hour in the second) and the number of attached oyster to substrata in the preliminary study. Also the oysters with height were more attached to substrata......
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
5
4
1997
02
19
fish culture experiments with Abramis brama orientalis in earthen pond to diversify aquaculture fish composition in Iran
fish culture experiments with Abramis brama orientalis in earthen pond to diversify aquaculture fish composition in Iran
49
62
116086
10.22092/isfj.1997.116086
FA
A.
Danesh Khosh Asl
Journal Article
2018
03
17
On two consecutive culturing period, the Caspian sea Bream fingerling average individual weight 30g stocked in a fish pond at the rate of 3000 unit per ha to rear through mono-culture method. Also in the other test carp pond fish comprised of 70% bream, 20% silver carp and 10% grass carp totally 4000 unit per ha Stocked to examine poly-culturing with bream species. The test replicated in second year by the same manner but the only difference was the weight of stocked bream fries which were 4g on average. Chemical fertilizer and chicken manure applied as warm water fish culturing technique demand. Carp grow out feed pellet supplemented to the ponds. Fish health, water quality and growth rate monitored. The minimum water temperature were 9 ֯C and maximum 33 ֯C recorded. Dissolved O2 = 5-7 mg/l, pH = 7-8.62 in the first year by mono-culturing method the bream achieved 200 gr by species on average. But with poly-culture system the bream gained 250g weight. Also individual species reached.....
On two consecutive culturing period, the Caspian sea Bream fingerling average individual weight 30g stocked in a fish pond at the rate of 3000 unit per ha to rear through mono-culture method. Also in the other test carp pond fish comprised of 70% bream, 20% silver carp and 10% grass carp totally 4000 unit per ha Stocked to examine poly-culturing with bream species. The test replicated in second year by the same manner but the only difference was the weight of stocked bream fries which were 4g on average. Chemical fertilizer and chicken manure applied as warm water fish culturing technique demand. Carp grow out feed pellet supplemented to the ponds. Fish health, water quality and growth rate monitored. The minimum water temperature were 9 ֯C and maximum 33 ֯C recorded. Dissolved O2 = 5-7 mg/l, pH = 7-8.62 in the first year by mono-culturing method the bream achieved 200 gr by species on average. But with poly-culture system the bream gained 250g weight. Also individual species reached.....
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
5
4
1997
02
19
A survey on infection of fishes of Anzali Lagoon with parasites of genus caryophyllaeus
A survey on infection of fishes of Anzali Lagoon with parasites of genus caryophyllaeus
63
70
116087
10.22092/isfj.1997.116087
FA
M.
Sattari
N.
Faramarzi
Journal Article
2018
03
17
A survey was carried out on parasitic infection of fishes of Anzali lagoon (Basin of the Caspian Sea, Iran) in this survey, three species of genus Caryophyllaeus including C. fimbriceps, C. laticeps and C. brachycollis were isolated from Common carp and Bream. The infection rate of Common carp with these three parasites and Bream with C. fimbriceps were 38 and 28 percent, respectively. The infection rate of these fishes varied depending on size, season and various station. C. laticeps and C. brachycollis were reported for the first time in Iran......
A survey was carried out on parasitic infection of fishes of Anzali lagoon (Basin of the Caspian Sea, Iran) in this survey, three species of genus Caryophyllaeus including C. fimbriceps, C. laticeps and C. brachycollis were isolated from Common carp and Bream. The infection rate of Common carp with these three parasites and Bream with C. fimbriceps were 38 and 28 percent, respectively. The infection rate of these fishes varied depending on size, season and various station. C. laticeps and C. brachycollis were reported for the first time in Iran......
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
5
4
1997
02
19
Hydrocarbons quality survey in the water, sediment and bivalve in the north-eastern of the Persian Gulf
Hydrocarbons quality survey in the water, sediment and bivalve in the north-eastern of the Persian Gulf
73
84
116088
10.22092/isfj.1997.116088
FA
Gh.
Amini Ranjbar
Sh.
Jamili
Journal Article
2018
03
17
Monthly samples of the bivalve Pinctada fucata were collected within one year (1995-96) in the north-eastern (Nakhiloo, Hendurabi and Lavan) of the Persian Gulf. The objective of this study was hydrocarbons quality survey. Thy above regions are natural habitant of pearl oyster (P.fucata). The primary sampling showed that pearl oyster stocks decreased in Lavan and Hendurabi regions, therefore the regions were selected as experimental stations. The oil hydrocarbons were measured in water (surface and depth), sediment and bivalves. The result indicated that in the north of Lavan, due to few currents of water hydrocarbons' concentration was more than north eastern part of Lavan, Hendurabi and Nakhiloo regions and in the, Nakhiloo region, in which hydrocarbons were less than studied stations, the bivalve size were larger......
Monthly samples of the bivalve Pinctada fucata were collected within one year (1995-96) in the north-eastern (Nakhiloo, Hendurabi and Lavan) of the Persian Gulf. The objective of this study was hydrocarbons quality survey. Thy above regions are natural habitant of pearl oyster (P.fucata). The primary sampling showed that pearl oyster stocks decreased in Lavan and Hendurabi regions, therefore the regions were selected as experimental stations. The oil hydrocarbons were measured in water (surface and depth), sediment and bivalves. The result indicated that in the north of Lavan, due to few currents of water hydrocarbons' concentration was more than north eastern part of Lavan, Hendurabi and Nakhiloo regions and in the, Nakhiloo region, in which hydrocarbons were less than studied stations, the bivalve size were larger......