Distribution and abundance of phytoplankton in Hormuzgan province, Hormuz Strait and the Persian Gulf waters

Distribution and density of different phytoplankton groups in Hormuzgan province along the Persian Gulf, from Sirik Harbor to Nayband Bay were studied during winter 2004. Sampling was carried out on board of Ferdous-1 research vessel in seven transects (21 stations) in three lines including surface layer (0-20m), middle and bottom layers (20-50m and more than 50m, respectively). We found 46 genera of diatoms (Bacillariophyceae), 19 genera of dinoflagellates, 6 genera of blue-green algae (Cyanophyceae), 1 genus of Euglenophyceae and 1 genus of Chrysophyceae. We recorded maximum and minimum phytoplankton density in different transects at 37665583 and 2433208 cells/m3 respectively. The maximum density was 62762083 cells/m3 for Bacillariophyceae group that was sampled in surface layer (0-20m) of the station 9. Also, we found that average total number of phytoplankton in three lines of seven transects was 11728973 cells/m3. One way ANOVA showed a significant difference for average number of phytoplankton for each transect (P0.05)

Investigation on feeding of sardines and major tuna fishes in west of Oman Sea (Jask area)

Feeding habits of three dominant species of tuna fishes (Thunnus tonggol, Thunnus albacares, Euthynnus affinis) and dominant species of sardine (Sardinella sindensis) were investigated from December 2006 to November 2007 in the western waters of Oman Sea. Seasonally samples of three species of these tuna and monthly samples of sardine were collected. Feeding studies on 101 longtail tuna (T.tonggol) indicated that the bony fishes were main food of this species (98.3%) and followed by random foods included cephalopods (1.7%) and crustaceans (1.7%). Among the bony fishes, anchovy (66 %) and sardines (25.9 %) were most important than the other fishes. FI and CV for this species were calculated 26.4 and 21.8 respectively. Stomach content analysis of 85 specimens of E.affinis demonstrated that bony fishes were only food for this species (100%). Sardines (49.3%) and anchovy (11.9%) were foremost food items for E.affinis. Moreover FI and CV were calculated 64.7 and 15.3 correspondingly. The stomach of 120 yellowfin tuna (T.albacares) were analyze. Results showed that bony fishes,cephalopods and crustaceans were formed food items of this species .Yellowfin tuna were preferable fed on bony fishes (87.7%) specially sardines(41.2%),flying fish(13.9%)and M.cordyla(10.4%) and followed by cephalopoda (43.8%) specifically Loligo sp.(84.5%) and crustaceans(11.2%) . FI and CV were calculated 38.3 and 25.8.Study on 320 stomachs were determined that zooplankton and phytoplankton formed food of S.sindensis. Zooplankton (crustacean and molluscs) were main food (90%) and phytoplankton (Bacillariophyceae and Dynophyceae) were least food items (10%). Copepoda (crustaceans) with 58% were preferable food and bivalves and after that bivalves (molluscs) with 14%, Bacillariophyceae (8%) and Cyanophyceae (2%) CV and FI were 30.3 and 29.4 respectively

Estimation of production potential in lake behind the Halilrud dam in Jiroft city

In order to the physical and chemical factors, planktons identification, determination of Chlorophylla and primary production in lake on study wad conducted, behind the Halilrud dam in Jiroft city. For this purpose 5 station selected and sampling was performed seasonally. Compersion of physical, chemical factors and planktons were done by duncan multiple test range. Studied factors had the suitable value for fish culture. In classes of Chrysophyceae, Bacillariophyceae and, Chlorophyceae had the most frequency respectively. Totally 49 phytoplanktons genus were identified which 18, 14,8,5 and 3 genus were related to Chlorophy ceae, Bacillariophyceae, Cyanophyceae, Dinophyceae and Chrysophyceae, genus respectively. Nitzchia and Navicula in Bacillariophyceae, Chlorococcum, Pediastrum, Staurastrum and Tetradron in Chlorophyceae, Spirulina, Chroococcus, Phormidium in Cyanophyceae and Dinobryon in Chrysophyceae had the most frequency. From Various group of zooplankton, Copepoda, Naplius, Cladocera, Rotifera (Brachinus, Keretella), Trichuridae were identified in winter season and Rotifera was the most of all. Chlorophylla had not significant difference in 9 seasons but it had significan difference in 5 depthes. Increasing in depth causes to decrease chlirophyla. The most chlorophylla was in 0.5m depth (4.7 mg/m3 ) and the least chlorophyllla was in 20m depth(0.82mg/m^3) primary production in lake was calculated by chlorophylla equal to 154 kg/ha/year

Microchimerism and Renal Transplantation: Doubt Still Persists

Objective: We sought to study microchimerism in a group of kidney transplant recipients. Materials and Methods: In this study, the peripheral blood microchimerism (PBM) after renal transplantation was retrospectively evaluated in 32 male-to-female recipients of living unrelated or cadaveric donor renal transplants. Using a nested polymerase chain reaction (PCR) amplification specific for SRY region of the Y chromosome, microchimerism was detected with a sensitivity of 1:1,000,000. Recipients were compared according to the presence of PBM, acute and chronic rejection episodes, type of allotransplant, recipient and donor age at transplantation, previous male labor or blood transfusion, allograft function (serum creatinine level), and body mass index. Results: Among 32 recipients, 7 (21.9) were positive for PBM upon multiple testing at various posttransplant times. All microchimeric recipients had received kidneys from living unrelated donors. No significant difference was observed with regard to other parameters. In addition the acute rejection rate in the microchimeric group was 3 (42) versus 4 (16) in the nonmicrochimeric recipients (not significant). Conclusion: Our results suggested better establishment of microchimerism after living donor kidney transplantation. However, doubt persists concerning the true effect of microchimerism after renal transplantation. It seems that microchimerism alone has no major protective role upon renal allograft survival. © 2007 Elsevier Inc. All rights reserved

Study on ecosystems and habitats of the Iranian coastal zones

Intended data set in two seasons, including the provinces of North and South have been prepared on the basis of the material presented in each chapter, required tables are presented to illustrate the subject. Beach area linking water and land ecosystems and the interface of two distinct characteristics of each other. An evolving system of natural coastal environment and involves the most complex and productive on Earth at the same time Ghny¬Tryn Akvsystm¬Hay respectively. The area, regional transport and is extremely vulnerable, and since it is an acceptor Layndh¬Hay land and sea, the accumulation of enduring Layndh¬Ha threatened. Marine pollution and the effects of drought activities consequence of socio-economic development of the coastline and Hvzh¬Hay drainage The result of lots, the major problems in most parts of the world that directly affects coastal Zystgah¬Hay. Layndh¬Hay so different that each human relationship between the beach and the sea entered the ranking. Special protection. This Rio Earth summit in 1992 again "was stressed and in Article 13 of Chapter 17 of Agenda 21 in Rio in environmental protection marine shipping operations explicitly raised the issue of identification of sensitive sea areas and governments were asked to carry out appropriate measures in this regard

Environmental impacts of shrimp farms on coastal waters in Tiab area, Hormozgan province, south of Iran

Shrimp farming industry has rapidly expanded in the south of Iran and in particular in Honnozgan Province along the coastal line during the past decade. A survey was conducted for evaluation of environmental impacts of effluents from the shrimp farms during culture season (July-December 2003) of Tiab area in Hormozgan Province. The physicochemical parameters such as air and water temperature, salinity, pH, dissolved oxygen, BOD5, nitrite, nitrate, total ammonia, inorganic phosphorus and total phosphorus were recorded monthly from 9 stations. The stations consisted of two inlets (stations 13 3), two outlets of effluents (stations 2, 4) and the remaining 5 stations were located along the coastal lines. The parameters were measured at 21-40°C, 22on39°C, 37-54ppt, 7.85-8.38, 4-8.1mg/L, 0.2-8.5mg/L, 0.11-0 .186mg/L, 0.001-0.029mg/L, 0- 0.016mg/L, Ome0.043mg/L and 0.014-1.4mg/L) respectively. The results showed that the range of most of the measured parameters such as water temperature, salinity, BOD5, ammonia, nitrate, phosphate and TP in the outflow waters (2, 4) were higher than inflow (1, 3) and coastal waters (5, 6, 7, 8 ,9). Statistical analysis of variance (ANOVA) demonstrated a significant difference between outlet effluent and other stations (P<0.05). We also concluded that the nutrients in the culture effluents are somewhat used by fauna of the Tiab creek, hence decreasing the pollutant load of the effluent

A survey on planktonic communities in Bandar Abbas coastal area

This study was conducted for investigation on algae bloom monitoring and oscillations of biotic and non-biotic parameters in coastal waters of Bandar Abbas from October 2013 to Septembre 2014. In this project, planktonic distribution and environmental data were collected from five stations, every 10 days. Four order and 45 genus of phytoplankton (Bacilliarophycea 29 genous, Dinophycea 13 genus, Cyanophycea 2 genus, Raphidophycea 1 genus) were identified, as well as , 10 order of zooplanckton consisted of Copepoda, Mollusca, Chaetognatha, Sarcomastigophora, Urochordata, Annalida, Nematoda, Echinodermata, Ciliophora and Granuloretica. Results showed that Bacillariophycea were dominate among phytoplankton species in all season. So that, Leptocylindrus, Chaetoceros and Nitzschia from Bacillarriophycea, Protoperidinium and Gymnodinium belong to Dinophycea, and Oscillatoria belong to Cyanophycea were dominate genus in Bandar Abbas coastal waters. The maximum and minimum density and frequency for phytoplankton were recorded respectively from Shilat Jety and Airport Stations. Based on ANOVA analysis on phytoplankton density no significant were observed seasonally (p>0.05), but significant differences were observed between stations (p<0.05). Algal blooms were recorded for Protoperidinum, Chaetoceros and Noctiluca form Shilat Jety in the study period. Result showed that Crustacea have more density amongst zooplankton community, although Arthropoda were dominate in all season. The maximum frequencies were recorded for Nauplius (78%) and Copepoda (21%), also Among copepod, Calanoida order observed 68.5% frequency in the study period. The ANOVA analysis showed significant differences both in stations and seasons for zooplankton density (p<0.05). The seasonal range of temperature were recorded between (19.43±2.58 - 31.98±2.48 ), salinity (27.15±9.48 - 38.13± 0.72ppt), dissolved Oxygen (2.8±1.81-6.87±1.25) mg/L, and pH (8.06±0.49- 8.69±0.23). Evaluation of biotic and abiotic factors indicate the probability of unhealthy and unstable Shilat jety and Gorzoozan stations coastal waters of Bandar Abbas City. One of these cases can be mentioned to high density of cyanophyceae in the estuary Gorzoozan compared other stations , high density of Phytoplankton and low diversity in the Shilat station. While the increase in Harpacticoida order of copepods As an indicator of pollution than on previous reports of other researchers In the this area, suggests pollution is pushed into the area

Feasibility study on development of artificial reefs in the Persian Gulf (Hormuzgan province)

Persian Gulf waters (areas of Hormuzgan province) in order to determine the best location for installation of Artificial reefs were studied seasonally from December 2006 to March 2007. Distribution of fauna and flora and estimation of deposit depth by SCUBA diving method, density and frequency of macrobenthose communities, frequency of ichthyoplankton communities, determination of organic carbon (OC) and Grain size and measurement of water physical factors including salinity, saturation oxygen, dissolved oxygen, temperature, chlorophyll a, in transect and subtransect was studied for recognizing the best placement to installation of artificial reefs. All areas of Shipping, military areas, around of Islands, natural habitats and entrance to jetty were introduced for excluding areas. South of Qeshm Island (transects of Bahman jetty, Bandar Masen and Bandar Salakh) are catching area for small pelagic (sardine and anchovy fishes), therefore in these areas installation of artificial reefs have confined with this restriction. Also entrance to Bahman jetty, sea plant habitats (sea grass and algae) in transects of Bahman jetty and Bandar Masen were considered as restricted areas. In this area, suitable areas for installation of artificial reefs was determined based on distribution of Ichthyoplankton societies for every transect, for macrobenthose enrichment Bahman jetty transect was calculated middle, but transects of Bandar Masen, Hengam island and Bandar Salakh was done good indicator. The deposition depth in transects of Bandar Masen and Hengam island was determined as good factor but this index was known as average factor for transects of Bahman jetty and Bandar Masen. Also, two another indicators, primary production and bottom sturdiness, were calculated as middle factor for Bahman jetty transect, but these indicators were known as good factors for other transects in this area (Bandar Masen, Hengam island and Bandar Salakh). The results of these indicators in transects of Bandar Kong and Bandar Bostaneh in Bandar Lengeh area was indicated that T. O. C and bottom sturdiness indices had no significant difference (p>0. 05) and the whole of these transects had average priority. Bottom sturdiness, primary productions and macrobenthose communities indices had difference in Bandar Lengeh area (p<0. 05) and these indices had average priority in Bandar Kong transect and had good priority in transects of Bandar Bostaneh and Bandar Hasineh. Ichthyoplankton community had average priority for Bandar Bostaneh transect, and had good priority for transects of Bandar Kong and Bandar Hasineh. The good priority has obtained for transects of Bandar Charak, Bandar Gorzeh and Bandar Chiroeyah. Also Macrobenthose community, primary production, water physical factors and bottom sturdiness were known as good, good, average and weakness priority respectively for transects of Bandar Charak, Bandar Gorzeh, but primary production, bottom sturdiness, water physical factors and macrobenthose community were resulted as average, good, good and average priority respectively for Bandar Chiroeyah transect . T.O.C index was determined as average priority for transects of Bandar Gorzeh and Bandar Chiroeyah and good priority for Bandar Charak transect. Finally, excluded areas maps, suitability areas maps and feasibility areas maps were drawn by Arc GIS software. In this survey, layers between 10 to 20 meters depth were recognized as the best position for installation of artificial reefs