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  • 1
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    Effects of bis-phenol A (BPA) on cellular and molecular levels of yellowfin seabream (Acanthopagrus latus) (2021)
    In:  http://aquaticcommons.org/id/eprint/24938 | 18721 | 2018-11-19 07:54:13 | 24938 | Khorramshahr University of Marine Science and Technology
    Details
    Publication Date: 2021-07-16
    Description: Today, Bisphenol A is an industrial important chemical that is abundantly used as a primary raw material for the production of plastics and resin. BPA reaches the aquatic environment mainly through urban and industrial sewage effluents; thereby posing a potential threat to the organisms living in these ecosystems. In this study, effects of BPA onerythrocytic nuclear abnormalities (ENA) stimulus (MN Test) and liver DNA integrity (DNA Unwinding Assay), in male yellowfin seabream (Acanthopagrus latus) were investigated. For this reason, fish received intraperitoneal injections during a period of 2 weeks with 10, 50, 100 and 150 µg g^-1 week^-1 of BPA dissolved in coconut oil. Solventcontrols received the coconut oil whereas controls were not injected. The fish were sampled on day 0, 7 and 14. In order to evaluate cytotoxicity of BPA presented in blood, the erythrocytic nuclear abnormalities (ENA) frequency in yellowfinseabrem was determined. Our results demonstrated a significant increase in fish micronuclei frequency after the treatment with bisphenol A in comparison to the control groups and in dose dependent manner. In addition, the rate of liver DNA integrity was tested using the DNA alkaline unwinding assay. Results showed a decrease in the rate of liver DNAintegrityin treated fishes after 7 and 14 days of BPA exposure in comparison to the control group. In conclusion, results of the current project indicated that BPA has highgenotoxic and/orcytogenotoxic potential.It could be concluded that Micronucleus test and DNA strand breaks can be used as sensitive cellular and molecular indicators of exposure to genotoxic BPA.
    Keywords: Biology ; Pollution ; Iran ; Musa Creek ; Bis-Phenol A ; Genotoxicology ; MN Test ; DNA Unwinding ; Acanthopagruslatus ; Levels ; Molecular ; Cellular ; Yellowfin Seabream
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
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    Format: 20-30
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  • 2
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    Evaluation of biological removal of anthracene by a Bacillus pumilus strain isolated from oil sediments of Imam Khomeini Port (2021)
    In:  http://aquaticcommons.org/id/eprint/24964 | 18721 | 2018-11-19 09:47:41 | 24964 | Khorramshahr University of Marine Science and Technology
    Details
    Publication Date: 2021-07-16
    Description: Due to their toxicities, oil pollutions and its derivatives such as anthracene are one of the most important issues of environmental researches all over the world. Oil hydrocarbons in contaminated soils, sediments and water can be degraded by microorganisms. Removal of hydrocarbons from aqueous solutions is also possible using cultured bacteria. In this study, the anthracene bioremediation by Bacillus pumilus isolated from oil sediments of Imam Khomeini port, was investigated. This bacterium made no clear halo on blood agar medium and couldn’t disperse the mineral oil but created a halo with a diameter of 0.5 cm on the surface of crude oil. As a result, the bacterium was detected as a non-producing biosurfactant species. The optical density of this species in the sample containing 30 mg/l of anthracene finally reached to 0.086. Measurement of anthracene degradation by HPLC showed that %40.833 of mentioned hydrocarbon was removed after 5 days. Therefore, the results indicate that the isolated bacterium can probably behave the same in the natural environment and couid have the potential in bioremediation of this pollutant from environments.
    Keywords: Health ; Iran ; Imam Khomeini Port ; Growth ; Biosurfactant ; Biodegradation ; B. pumilus ; Bacillus pumilus ; Evaluation ; Sediment ; Oil
    Repository Name: AquaDocs
    Type: article , TRUE
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    Format: 35-43
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  • 3
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    Spatial and temporal variability of brittle star (Macrophiothrix cheneyi: Ophiuroidea) in the shores of Chabahar Bay, Oman Sea (2021)
    In:  http://aquaticcommons.org/id/eprint/25029 | 18721 | 2018-11-17 18:35:39 | 25029 | Khorramshahr University of Marine Science and Technology
    Details
    Publication Date: 2021-07-16
    Description: Echinoderm species are important members of benthic communities existing in subtropical to Polar Regions. They have an important role in nutrient cycles and other communications between organisms. This study investigated the distribution and abundance of brittle star Macrophiothrix cheneyi in the intertidal zone of Chabahar bay, the Oman Sea. Sampling was randomly done bimonthly using a square meter quadrate during one year, from November 2008 to September 2009, at 5 selected stations. According to the results of a Kruskal-Wallis analysis, the density of this species at different sampling times and stations revealed a significant difference (P〈0/05). The highest frequency of this species was measured at the station of Chabahar University of Maritime and Marine Science in September 2008 (±1/54 3/58 ind.m^-2) and its lowest frequency was measured at Kolbe Qavasi station during the whole year except January. The difference in abundance (between the different months and stations) seems to be influenced by ecological (bed, food and shelter) and biological factors (fertility, hunting and competition). The investigation of distribution revealed that brittle stars in the intertidal zone under study followed random and patchy dispersion. The results of the stability indicator revealed that though the brittle star was rarely found during some periods, it was a common species in September 2008.
    Keywords: Biology ; Iran ; Oman Sea ; Chabahar Bay ; Brittle star ; Abundance ; Distribution ; Macrophiothrix cheneyi ; Species
    Repository Name: AquaDocs
    Type: article , TRUE
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    Format: 46-55
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  • 4
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    New observation of two species of sea cucumbers from Chabahar Bay (Southeast Coasts of Iran) (2021)
    In:  http://aquaticcommons.org/id/eprint/21646 | 17408 | 2017-11-07 09:04:20 | 21646 | Tehran University, Kish International Campus, Kish Island, Iran
    Details
    Publication Date: 2021-06-26
    Description: Although, sea cucumbers are well known animals in Eastern Asia, in Iran they are not popular marine animals. Divers recorded these animals in their dives but this is the first scientific approach in identification of holoturians in Southeast coast of Iran. All sea cucumbers were collected with SCUBA diving and species identification was done through morphological keys and review of their dermal ossicles. There are two species of sea cucumber belong to genus Holothuria were collected on subtidal zone of Chabahar Bay in the late of 2007. This is the first report of H. hilla, H. parva from Chabahar Bay (North of Oman Sea). This study is revealed the special characteristics of the presented species in order to just identification of them. In the studied areas, H. parva has known as a rare species.
    Keywords: Biology ; Fisheries ; Holothuria hilla ; Holothuria parva
    Repository Name: AquaDocs
    Type: article , TRUE
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    Format: 130-134
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  • 5
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    Comparsion of benthic crustasean's density and diversity in Bahrakan coasts during summer and winter (2021)
    In:  http://aquaticcommons.org/id/eprint/24919 | 18721 | 2018-11-19 07:51:49 | 24919 | Khorramshahr University of Marine Science and Technology
    Details
    Publication Date: 2021-07-16
    Description: Mudflats of the most important coastal habitats of the Persian Gulf to go and base are essential primary production. Variety of animal species to determine the biological and ecological health of an ecosystem of water is important. Class of ostracoda component of hard skin is shelled. To study the diversity and distribution of this species in the area seven stations were selected Bahrakan tidal beach. Sampling of sediment cores by the core 8/5cm^2 from 5 cm surface sediments were performed. Environmental factors such as salinity, temperature, dissolved oxygen and turbidity was measured. Total organic carbon and grain size of total deposits each station respectively. Biological sediments at each station with 10% formalin were fixed, 63 mm sieve, then washed and stained with Rose Bengal and the organisms isolated were tetrachloride carbon. The density of organisms in the winter and summer were 10495 and 3565 individuals in the 10cm^2, respectively. Finally, 29 species were identified. Cytheridae family was abundant. The highest value of Shannon’s diversity and brilluin index, Margalef index, Hill and Pielou’s evenness calculated in winter. The highest total organic carbon in winter and summer was 9.59 and 4.61, respectively. Sediment grain size showed that the region made of silt – clay and the highest percent of silt_ clay was in summer.
    Keywords: Biology ; Ecology ; Iran ; Bahrakan ; Miofauna ; Ostracoda ; Index ; Mudflats ; Density ; Diversity ; Benthic ; Winter ; Summer
    Repository Name: AquaDocs
    Type: article , TRUE
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    Format: 41-50
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  • 6
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    Pathologic liver lesions in orange spotted grouper Epinephelus coioides exposed to benzo[a] pyrene (2021)
    In:  http://aquaticcommons.org/id/eprint/24924 | 18721 | 2018-11-22 07:14:35 | 24924 | Khorramshahr University of Marine Science and Technology
    Details
    Publication Date: 2021-07-16
    Description: Benzo[a]pyrene (BaP), is a ubiquitous environmental contaminant present in air, water, and sediment. BaP is readily absorbed by all routes of exposure and can pass directly through the plasma membrane of most cell types. The present study was conducted to examine the effects of BaP on liver tissue structure in orange spotted grouper Epinephelus coioides affected by different concentration of BaP. In the present report, 100 E. coioides were exposed by intraperitoneal injection to 2, 20 and 200 mg/kg of BaP for 14d under laboratory conditions and the samples were taken from fish liver in days 0, 2, 4, 7 and 14 of experiment for histopathological study. The liver samples were fixed in 10%formalin buffer solution. Fivemicrometer thick sections were obtained and were stained in hematoxylin/eosin for examination in light microscopy. No pathological alteration was observed in the liver samples of controls fish. The pathological alterations of liver were including of hepatocyte vacuoletion, increase of melanomacrophage centers, dilation of diss space, sinusoidal dilation, focal necrosis, hepatocytes hypertrophy, nucleus in a lateral position and hepatocyte degeneration. The frequency and severity of tissue changes rose with the increase of BaP concentration in all sampling days. The most frequency and severity of histopathological alteration were observed in fish treated by 200 mg/kg BaP in day 7.
    Keywords: Health ; Iran ; Pathology ; Liver ; Tissue ; Benzo[a]pyrene ; Epinepheluscoioides ; Epinephelus coioides ; Orange spotted grouper
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
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    Format: 61-70
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  • 7
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    Histological disorders of brain in cultivated orange spotted grouper Epinephelus coioides from Bandar Emam Khomeini (2021)
    In:  http://aquaticcommons.org/id/eprint/24986 | 18721 | 2018-11-17 18:23:41 | 24986 | Khorramshahr University of Marine Science and Technology
    Details
    Publication Date: 2021-07-16
    Description: Epinephelus coioides fish is cultivated in Emam Khomeini Fisheries Research Center under Southern Aquaculture division. This fish is used in histology, histopathalogy, toxicology, physiology, cellular and molecular biology, studies. The Zangi creek water is contaminated due to petrochemical, industrial, agricultural and commercial communication pollutants. The water that the fish are cultivated with is obtained from Zangi creek and the fish which are exposed to this water are contaminated. In the histopathological experiments performed by Haemotoxylin- Eosin staining method in the brain, disorders such as karyolysis and necrosis of the nucleus, vaculation and oedema as well as hyperanemia are apparent. These defects are more obvious in the medulla oblongata, diencephalon and cerebellum of the brain. These disorders could be due to contamination of Zangi creek water such as heavy metals, organic derivatives of heavy metals, aromatics, organophosphates and etc.
    Keywords: Biology ; Iran ; Bandar Emam Khomeini ; Epinephelus coioides ; Fish ; Aquaculture ; Histopathalogy ; Histology ; Toxicology ; Physiology ; Molecular ; Biology ; Orange spotted grouper ; Heavy metals
    Repository Name: AquaDocs
    Type: article , TRUE
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    Format: 8-16
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  • 8
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    Age, growth and maturity of Hilsa shad (Tenualosa ilisha) in northwestern part of the Persian Gulf (2021)
    In:  http://aquaticcommons.org/id/eprint/25074 | 18721 | 2018-11-16 09:03:07 | 25074 | Khorramshahr University of Marine Science and Technology
    Details
    Publication Date: 2021-07-16
    Description: In this study age, growth and maturity of Hilsa shad in Khuzestan province were analyzed. 394 number of fishes from marine habitat (Lifeh-Boseif), estuaries (Bahmanshir and Arvand) and rivers (Bahmanshir and Karoon) from February 2014 to September 2014 were collected using commercial fishing with gill net. Total length and wet weight of each fish were measured with precision of 1 cm and 1 gram. Sagittal otoliths were extracted for age determination of the fish. Since the otoliths were fragile, they were sectioned by polishing with sandpapers 800, 1500 and 2000. Then abdominal cavity of each sample were opened for determining sex and maturity stage. Growth parameters were calculated using von Bertalanffy growth function (L_∞=58.365, K=0.26, t0=-0.16). Phi-prime constant was obtained 2.95. Length and age at first maturity were obtained 27.32cm and 2.4 g respectively using logistic model to fit a and b parameters with observed data in spawning season.
    Keywords: Biology ; Iran ; Khuzestan province ; Age ; Growth ; Maturity ; Hilsa shad ; Tenualosa ilisha ; Otolith ; Length-weight relationships ; Parameters ; Fish
    Repository Name: AquaDocs
    Type: article , TRUE
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    Format: 47-58
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  • 9
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    New Observation of Two Species of Sea Cucumbers from Chabahar Bay (Southeast Coasts of Iran) (2017)
    Details
    Publication Date: 2021-05-19
    Description: Although, sea cucumbers are well known animals in Eastern Asia, in Iran they are not popular marine animals. Divers recorded these animals in their dives but this is the first scientific approach in identification of holoturians in Southeast coast of Iran. All sea cucumbers were collected with SCUBA diving and species identification was done through morphological keys and review of their dermal ossicles. There are two species of sea cucumber belong to genus Holothuria were collected on subtidal zone of Chabahar Bay in the late of 2007. This is the first report of H. hilla, H. parva from Chabahar Bay (North of Oman Sea). This study is revealed the special characteristics of the presented species in order to just identification of them. In the studied areas, H. parva has known as a rare species.
    Description: Published
    Keywords: Observation ; Species ; H. hilla ; H. parva ; Holothuria
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.130-134
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  • 10
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    The process of long and location changes of sea star(Astropecten hemprichi) and sea urchin(Diadema setosum) in the coast of Chabahar Gulf (2018)
    Details
    Publication Date: 2021-05-19
    Description: This research aimed to study the process of long and location changes of sea star(Astropecten hemprichi) and sea urchin(Diadema setosum) in the coast of Chabahar Gulf in the Oman Sea, IR. during November 2008 to September 2009. The area of study was at the farthest end of south east of Iran in province of Sistan and Balouchestan. Sampling was done bimonthly during low tide from 5 stations, using 1m×1m quadrating randomly. 1885 samples of Echinodermata were collected and studied. Results showed that 32 of them(1.6%) belong to A.hemprichi species and 28(1.4%) samples belong to D. setosum species. The samples then were counted and identified. Then the samples’ abundance, distribution and stability were investigated. The results show that the maximum abundance of A. hemprichi was occurred in September 2009 (1/92±0/76ind.m-2) and The maximum value for D. setosum was shown in November 2008 (3ind.m-2). Investigation of distribution and stability indicators may reveal that A. hemprichi and D. setosum were dispersed more randomly and they may be considered as the rare species.
    Description: Published
    Keywords: Location ; Long ; Sea star ; Astropecten hemprichi ; Sea urchin ; Diadema setosum ; Abundance ; Species ; Distribution ; Echinodermata ; Quadrate
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.81-90
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