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  • 1
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    Study of indicator bacteria and ovary of nematode at the surface water, underwater and sewage in the basin of Mangol dam (Mazandaran province) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Indicator of bacteria such total coliforms and fecal coliforms are one of the most important environmental factors that effect on water quality. Haraz river is one of three rivers in north of country and it originate from central Alborz. Overall, discharge of unborn sewage, agriculture pesticides, seasonal raining was caused decreasing of quality of the river. Therefore, quality and quantity of the grandwater, surface water and sewage in different zone of this river such Mangol dam is necessary. In this study, total coliforms and fecal coliforms and nematode ovary in 13 stations of Haraz including Sorkhrood, Klodeh, Amol Esar Town, Helomsar, Mangol dam, Karesang, Jalav bridge, Norroud, Tehran 115, Larijan, Abeask, Lasem, Lar (pleur) were surveyed. ECC Chrome agar was used for counting and isolation of coliforms groups and nematode ovary counting was done as formal – ether sedimentation method. The results showed that maximum and minimum of total coliforms in surface water was observed in Sorkhrood (9.4 CFU/100ml) and Lasem (4.2CFU/100ml) and also maximum and minimum of fecal coliforms in Sorkhrood (3/2 CFU / ml) and Lasem (1/1CFU/100ml) respectively. Maximum and minimum of these bacteria in ground water were Abeask (4 CFU /100ml) and Helomsar (9/1 CFU/100ml) (for total coliforms) and Abeask (7/1 CFU/100ml) and Helomsar, Klodeh and Larijan (2/1 CFU/100ml) (for fecal coliforms) respectively. Maximum and minimum of total and fecal coliforms in sewage were Norroud (1/3 CFU/100ml) and Amole Esar Town (2/2 CFU/100ml) (for total coliforms) and Norroud (6/1 CFU/100ml) and Amole Esar Town and Tehran 115 (2/1 CFU/100ml) (for fecal coliforms) respectively. Ovary of Nematode in sewage was 30 and 124 in Norroud and Amole Esar Town respectively. The conclusion of this study was showed that quality of Haraz is low level and not proper for drinking and swimming.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Environmental ; Surface water ; Groundwater ; Sewage ; Coliforms ; Nematodes ; Bacteria ; Agriculture ; Sedimentation
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 48pp.
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  • 2
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    Short communication: Parasites and bacteria isolated from ctenophore invaders, Mnemiopsis leidyi and Beroe ovata (2021)
    In:  http://aquaticcommons.org/id/eprint/22638 | 18721 | 2018-05-07 22:26:25 | 22638 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-08
    Description: Mnemiopsis leidyi (Comb Jelly) is an exotic species which has not been reported from the Caspian Sea till 1999, but it was observed and reported from the southern coasts of Caspian Sea in 1999. Invasion of the Mnemiopsis leidyi to the Caspian Sea pelagic ecosystem has been one of the main difficulties in the past decade. Mnemiopsis leidyi has been brought from the Black Sea to the Caspian Sea by ballast water of ships and it has settled in the southern Caspian Sea through the time. There is a little information regarding the microbial flora in comb jelly but a large number of comb jelly carry natural flora and pathogens located in the coastal waters such as Aeromonas and Vibrio. However, it might have been entered into the Caspian Sea many years ago, but it has recently caused excessive reduction in kilka fish stocks because it is considered as a food competitors for them. The comb jelly may also carry some new microorganisms like parasites and microbial flora to the Caspian Sea. This study was carried out to investigate the parasites and bacterial flora of B. ovata and M. leidyi as probable dangers for the Caspian Sea ecosystem.
    Keywords: Biology ; Ecology ; Parasites ; Bacteria ; Beroe ovata ; Mnemiopsis leidyi ; Caspian Sea ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 733-736
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  • 3
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    The comprehensive study of possibility ecological control Mnemiopsis leidyi in Caspian Sea activity: The study and recognization parasitic fauna and Bacterial flore in ctenophore (Mnemiopsis leidyi and Bereo ovata) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25134 | 18721 | 2018-08-26 13:35:47 | 25134 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Bacterial flora and parasitic fauna of M. leidyi an exotic invader jelly fish to Caspian Sea ecosystem and B. ovata to Black sea an alternative biological control agent was studied. During summer 1382 to spring 1383, using routine Bacteriological work. 72 sample of sea water Caspian Sea obtained from depth 20 and 50 meters, 36 sample of M. leidyi from depth 20 meters, 10 sample of B. ovata and 3 sample of sea water (Black sea) were collected and according to Bacteriological was studied. 216 sample of M. leidyi from depth 10 to 50 meters of Caspian Sea and 47 sample of B. ovata from Black and Marmarreh Sea (Turkey) were collected and was studied. In this study no parasite from was identified in M. leidyi (Caspian sea) but 64 percentage and 73 percentage of B. ovata (Marmarreh and Black sea respectively) contaminated to Trichodina ctenophore at varians concentration B. ovata of Black sea (130 min 1050 max) and B. ovata Marmarre sea (420 min 2100 max). While B. ovata kept at high salinity of 21 ppt was more contaminated with this pretrichial protozoan (Trichodina) than in low salinity (12/5 ppt). in comparision of bacterial flore in two cetenophore (M. leidyi and B. ovata) was observed that some of bacteria such as micrococcus sp, Aeromonas sp. Bacillus coagulans in both ctenophore and some other bacteria such as Agromobacterium and chromobacterium only observed in B. ovata but other researcher have reported fram Caspin sea and some of bacteria to specific Shewanella , Vibrio harveiy and bacillus linens was observed in B. ovata . Of course specific bacteria cannot transfer to Caspian Sea (different of salinity black sea (2/1%) to Caspian Sea (1/25 %)). Therefore if B. ovata to introduce to south Caspian Sea for biological control population M. leidyi. it is necessary at first some of viral pathogen in aquatic animal (fish) such as VNN, IPN,IHN,VHS,SVC was studied and then with confidence 95% non-infestation B. ovata to viruses and pass from bath anti parasite and anti-bacterial must be introduce to south Caspian sea.
    Keywords: Ecology ; Health ; Iran ; Caspian Sea ; Black sea ; Parasite ; Bacteria ; Beroe ovata ; Mnemiopsis leidyi ; Agromobacterium ; Chromobacterium
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 55
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  • 4
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    Study on the growth status of mullets with viral nervous necrosis disease in the southern Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25699 | 18721 | 2018-10-10 08:54:02 | 25699 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Mullet and mullet products have considerable economic importance at a regional level, especially around the Caspian Sea. The leaping mullet constitutes an important part of their production. This study is the first detailed work on the age and growth of the leaping mullet (Liza saliens) from September 2012 to March 2013 in the Southern coast of the Caspian Sea. Age and growth determinations were based upon the scale samples taken from 102 fish. Marginal increment analysis was used to validate age determination. The back-calculated lengths stage estimated from the scale showed no differences between in this study. The maximum age of leaping mullet in the Southern coast of the Caspian Sea was 5 years for males and 6 years for females. The von Bertalanffy growth functions were Lt=30.415(1-e-0.275(t+0.645)) for males and Lt=34.832(1-e 0.211(t+1.009)) for females. A large spread and length overlap characterized the age groups. The estimated Length Weight relationships were common for the two sexes (W=0.079L3 ). The slope (b) values of the length-weight relationship showed that weight of leaping grey mullet in Mazandaran increased associated with length in isometric. The mean condition factor for males, females and all specimens were determined as 0.908, 0.900 and 0.897, respectively. According to sex groups, the mean condition factor of males was slightlyhigher than that of females. The total length for leaping grey mullet was determined as 23.3 cm.
    Keywords: Aquaculture ; Iran ; Caspian Sea ; Age determination ; Fish scale ; Liza saliens ; Back calculation
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 66
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  • 5
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    Study of indicator bacteria and ovary of nematode at the surface water, underwater and sewage in the basin of Mangol dam (Mazandaran province) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25529 | 18721 | 2018-10-05 15:51:43 | 25529 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Indicator of bacteria such total coliforms and fecal coliforms are one of the most important environmental factors that effect on water quality. Haraz river is one of three rivers in north of country and it originate from central Alborz. Overall, discharge of unborn sewage, agriculture pesticides, seasonal raining was caused decreasing of quality of the river. Therefore, quality and quantity of the grandwater, surface water and sewage in different zone of this river such Mangol dam is necessary. In this study, total coliforms and fecal coliforms and nematode ovary in 13 stations of Haraz including Sorkhrood, Klodeh, Amol Esar Town, Helomsar, Mangol dam, Karesang, Jalav bridge, Norroud, Tehran 115, Larijan, Abeask, Lasem, Lar (pleur) were surveyed. ECC Chrome agar was used for counting and isolation of coliforms groups and nematode ovary counting was done as formal – ether sedimentation method. The results showed that maximum and minimum of total coliforms in surface water was observed in Sorkhrood (9.4 CFU/100ml) and Lasem (4.2CFU/100ml) and also maximum and minimum of fecal coliforms in Sorkhrood (3/2 CFU / ml) and Lasem (1/1CFU/100ml) respectively. Maximum and minimum of these bacteria in ground water were Abeask (4 CFU /100ml) and Helomsar (9/1 CFU/100ml) (for total coliforms) and Abeask (7/1 CFU/100ml) and Helomsar, Klodeh and Larijan (2/1 CFU/100ml) (for fecal coliforms) respectively. Maximum and minimum of total and fecal coliforms in sewage were Norroud (1/3 CFU/100ml) and Amole Esar Town (2/2 CFU/100ml) (for total coliforms) and Norroud (6/1 CFU/100ml) and Amole Esar Town and Tehran 115 (2/1 CFU/100ml) (for fecal coliforms) respectively. Ovary of Nematode in sewage was 30 and 124 in Norroud and Amole Esar Town respectively. The conclusion of this study was showed that quality of Haraz is low level and not proper for drinking and swimming.
    Keywords: Health ; Iran ; Mazandaran province ; Haraz River ; Mangal Dam ; Surface water ; Groundwater ; Sewage ; Coliforms ; Nematodes ; Bacteria ; Agriculture ; Sedimentation
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 48
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