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  • 1
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    Heavy Metal Concentration in Largehead Hairtail (Trichiurus lepturus Linneaus, 1758) and Savalai Hairtail (Lepturacanthus savala (Cuvier, 1829)) Obtained from Karachi Fish Harbour, Pakistan (2018)
    Springer
    Details
    Publication Date: 2018-08-16
    Print ISSN: 0007-4861
    Electronic ISSN: 1432-0800
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Published by Springer
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  • 2
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    Concentrations of Heavy Metals in Sardinella gibbosa (Bleeker, 1849) from the Coast of Balochistan, Pakistan (2015)
    Springer
    Details
    Publication Date: 2015-06-09
    Print ISSN: 0007-4861
    Electronic ISSN: 1432-0800
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Published by Springer
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  • 3
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    Community structure and seasonal distribution of intertidal macrofauna from two rocky shores of Karachi coast (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/27099 | 25017 | 2020-11-12 05:06:25 | 27099 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: Rocky shores are considered heterogeneous environments due to their composition and structure. Therefore, they support numerous habitats for flora and fauna. Organisms found on rocky shores are facing intense physicochemical conditions during tidal changes from upper to lower intertidal zones. Total (N=1888) specimens were collected on seasonal basis from intertidal zone during low tide from two rocky sites of Karachi coast, Buleji and Sunehri during January 2017 to December 2017. The highest number of individuals (N=1041), were recorded from Buleji than Sunehri (N= 847). The seasonal abundance in Mollusca were measured as (36.84%), (63.67%), (25.08) and (40.38%) from Buleji while from Sunehri (45.16 %), (46.01%), (48.65) and (42.79 %) during pre-monsoon, south-west monsoon, post monsoon and north-east monsoon season respectively. Group Arthropoda, Mollusca and Echinodermata were shows the highest abundance of the species at both sites as compare to other groups. The highest diversity index from Sunehri (H'=0.64) was measured in north-east monsoon season meanwhile, (H'=0.61) was measured in post monsoon season from Buleji coast. Evenness index (J'=0.25) in pre-monsoon season from Buleji and (J'=0.28) in south-west monsoon season from Sunehri coast. Season shows the great abundance of species as compare to other seasons. No significant correlation was observed in between seasons, water temperature and salinity with macrofauna groups at both sites.
    Description: Higher Education Commission of Pakistan
    Keywords: Biology ; Ecology ; seasonal distribution ; macrofauna ; Karachi coast ; Buleji ; Sunehri
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 137-154
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  • 4
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    An assessment of pollution in major creeks around Port Qasim (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26535 | 25017 | 2019-05-27 10:16:32 | 26535 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: Discharge of industrial and domestic wastes in sea alter the physical and chemical properties of sea water, which may affect the marine ecosystem. This study was aimed to measure the water quality of eight different creeks around Port Qasim. Samples were collected and analyzed using standard procedures during February and March,2009. The parameters including pH, Conductivity, Total Dissolved Solids, Salinity, Dissolved Oxygen, Nitrate, Phosphate, Sulphate, Chloride, Calcium, Potassium, Zinc,Iron, Cobalt, Chromium, Manganese and Cadmium were determined. The result shows that Bakran creek and Gharo-Phitti creeks are heavily polluted compared to other creeks. This study recommends that wastes from the industries or sewerage should be treated before being discharge into the creek system.
    Description: Higher Education Commission of Pakistan
    Keywords: Conservation ; Environment ; Pollution ; Creeks ; Port Qasim ; nutrients ; Gharo-Phitti ; Bakran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1-9
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  • 5
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    Inventorying of coastal plant species and distribution of plant communities along Karachi Coast - I: Hawks Bay to Sandspit Beach (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26560 | 25017 | 2019-05-31 13:18:56 | 26560 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: The flora and vegetation of about 4.5km coastal stretch from the SandspitBeach to Hawke’s Bay Beach was yearly studied from 2005 to 2009. A total of 71species was recorded belonging to 21 dicots and two monocots families. The vegetationwas mostly halophytic and xerophytic with the exception of some annual species. Theoverall dominant species was Avicennia marina; however the study area had differentmicrohabitats and each had its own dominant species. While the mangrove forest in theBackwaters lagoon appeared to be comparatively in good shape, the sea-front vegetationwas found much damaged. The important sand-binding species like Ipomoea pes-capraeand Halopyrum mucronatum appeared only sparingly, while the endemic speciesAsparagus dumosus totally disappeared from the area in recent years. The apparentreason for this damage is human activity like the construction of huts and visitation ofthese beaches by a large number of picnickers from the city. The destruction ofvegetation results in the collapse of ecosystem. The fauna dependant on vegetation alsodisappears and the ecological services of the ecosystem come to a halt.
    Keywords: Biology ; Ecology ; Coastal flora and vegetation ; halophytes ; coastal lagoon ; microhabitats ; mangroves ; anthropogenic disturbance.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 43-54
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  • 6
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    Distribution of major zooplankton groups in Ketibander creek system (Indus delta) during monsoon season (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26581 | 25017 | 2019-06-02 07:38:13 | 26581 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: The aim of present study was to investigate the occurrence andcomposition of major zooplankton groups from two permanent stations (station # 1Ochito creek and station #2 Khuni creek) in Ketibander creek system Indus deltaic areaduring monsoon season (May to July 1997) There is no data/information available on thezooplankton communities of the study area. Fourteen major zooplankton groups wereobserved. Highest percentage (68.03 %) compositions of zooplankton were recorded inJune from station 1 and (47.05 %) in May from station 2.The highest mean percentage(20.25) and (46.50) were recorded in zoea. Analysis of variance between zooplanktonsand months showed no significant difference at (P〉0.05).
    Keywords: Biology ; zooplankton groups ; monsoon season ; Ketibander ; Indus Delta.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 13-24
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  • 7
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    Length-weight relationship and condition factor of green back mullet Liza subviridis fish (Valenciennes, 1836) collected from Damb Harbour, Balochistan coast, Pakistan (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26592 | 25017 | 2019-06-03 12:01:11 | 26592 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: Total (378) Liza subviridis samples collected from Damb Fish LandingCentre Sonmiani (Miani Hor, Balochistan during the year of 2008 to 2010. The totallength was measured in between 6.75cm to 14.75cm and the body weight 0.75gm to 7.52gm. Highest condition factor (1.181) was measured in between size class 9 to 9.5 cmhowever lowest Kn (0.8738) were measured in between size class 10.5 to 11.0 cm. Thecalculated value of log a and regression coefficient b were -2.41680; 2.801 respectivelyduring the year of 2008-2009. However the value of log a and regression co-efficient bwere -2.4115; 2.8137 measured in the year of 2009-2010.Present study shows negativeallometric pattern of growth because the b-values less than ideal value 3.
    Keywords: Biology ; Fisheries ; Length-weight relationship ; Liza subviridis fish ; Balochistan coast ; Pakistan.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 51-60
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  • 8
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    Population dynamic and length–weight relationships (LWRS) in Fenneropenaeus merguiensis (de Man, 1888) collected from Balochistan coast, Pakistan (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26607 | 25017 | 2019-06-04 07:07:38 | 26607 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: Total of (632) Fenneropenaeus merguiensis specimens were collected from Damb Fish Landing Centre at Sonmiani, Balochistan during 15th August 2008 to 15th April 2010. The mortality rates M, F and Z computed are 2.46, 3.27 and 5.73 respectively and during the year 2009-2010, the mortality rates M = 2.36, F = 3.17 and Z = 5.63 were measured respectively. Exploitation Rate (E) were determine in between 0.57- 0.58 during 2008-2010. The calculated value of log a -3.0551 and regression coefficient, b 3.3931 were measured in 2008-2009 and the value of log a -3.2751 and regression coefficient b 3.5689 were recorded in 2009- 2010 respectively. The mean condition factor was recorded as 1.0179 and 1.0062 in 2008-2010.
    Keywords: Biology ; Population dynamics ; Fenneropenaeus merguiensis ; Balochistan coast ; Pakistan.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 145-160
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  • 9
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    Seasonal variation of condition factor and weight - length relationship in Thryssa hamiltonii Gray, 1835 (Clupeiformes: Engraulidae) collected from Balochistan coast in the Arabian Sea, Pakistan (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26568 | 25017 | 2019-05-31 14:04:31 | 26568 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: Present study deals with the effects of seasonal variation on condition factor (CF) and weight - length relationships (WLRs) of Thryssa hamiltonii, sampled during pre and post- monsoon seasons in 2011 from the Balochistan coast of the Arabian Sea. The results showed that T. hamiltonii has isometric growth characteristics in pre and post-monsoon. The value of b was calculated as 3.2364 in pre-monsoon, as 3.0499 in post-monsoon season and as 3.1346 in combined data with not significantly different from 3 (Pauly’ t test, P 〉 0.05) Moreover, the mean CF was calculated between 0.13 - 0.60 (mean: 0.26±0.010) in pre-monsoon season and between 0.19 - 0.90 (mean: 0.39±0.017) in post-monsoon season. The calculated CF showed statistically difference among the pre-monsoon, post-monsoon and combined data (One way ANOVA, P = 5.47E-08).
    Keywords: Biology ; Fisheries ; Length - weight relationships ; condition factors ; Hamilton's thryssa ; Thryssa hamiltonii ; Balochistan coast ; Arabian Sea.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 29-35
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  • 10
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    Determination of Fe, Zn, Mn, Cu, Cd and Pb concentrations in Scatophagus argus (Linnaeus, 1766) from the Korangi fish harbour, Karachi, Pakistan (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26582 | 25017 | 2019-06-02 07:36:11 | 26582 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: Fe, Zn, Mn, Cu, Cd and Pb concentrations were measured by atomicabsorption spectroscopy in Scatophagus argus collected during January throughDecember 2013. Muscle and liver tissues of the fish samples were analyzed to examinethe differences in concentration among the above metals in different seasons of the year.Significant differences were found between the tissues, with all metals being consistentlyhigher in liver than those in edible tissues. There appeared to be a general trend ofincreasing concentration in post-monsoon for Fe, Zn, Cu and Cd and in pre-monsoon forMn and Pb. However, statistically significant differences were not found betweenseasons. The results may be concluded that the heavy metal amounts in spotted scat of theKorangi fish harbor do not show any threat to people health.
    Keywords: Biology ; Fisheries ; Heavy metals ; Scatophagus argus ; Korangi fish harbor ; Karachi ; Pakistan.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 25-32
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