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dc.contributor.authorMoazzam, Muhammad
dc.coverage.spatialOrmara (East Bay)en_US
dc.coverage.spatialBalochistanen_US
dc.coverage.spatialPakistanen_US
dc.date.accessioned2021-04-27T08:20:31Z
dc.date.available2021-04-27T08:20:31Z
dc.date.issued2020-12-31
dc.identifier.urihttp://hdl.handle.net/1834/17953
dc.description.abstractMass mortality of fish and shellfish species was recorded from Ormara (East Bay) in ‎October 2016. Initially a few dead fishes were observed to be floating in the open sea in ‎the East Bay area. With the passage of time, mass mortality was observed on the south-‎western part of the East Bay and heaps of fish were found floating in the area. This ‎event of mass mortality was only confined to the Oramara (East Bay) and not spread to ‎other parts of Oramara coast. In order to determine the dynamic of the fish mortality ‎and its spread in the area, sampling of the water of the area was collected on regular ‎intervals. It was observed that Noctiluca scintillans (Macartney) Kofoid & Swezy, 1921 ‎was present in extremely large numbers (highest recorded concentration 13 cells/ml) ‎which led to depletion of oxygen in the area resulting in mortality of large number of ‎fishes. In this fish kill demersal (bottom dwelling) as well as pelagic species (surface ‎dwelling) were found dead in the area in large numbers. Groupers (Epinephelus spp.), ‎Chinese pomfrets (Pampus chinensis), mullets, shrimp (Penaeus spp.) and crabs ‎‎(Portunus spp.) were dominated in the dead fishes and shellfishes. Oxygen depletion was ‎observed to confine to south-western part of the Ormara Bay where highest number of ‎dead fishes were observed. The phenomenon of mortality of fishes continued for 8 days ‎whereas normal condition started prevailing in 15 days and no mortality was observed ‎after 20 days since the start of the mortality phenomenon.‎
dc.language.isoenen_US
dc.relation.urihttps://www.pakjmsuok.comen_US
dc.rightsAttribution-ShareAlike 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-sa/4.0/*
dc.subject.otherMass mortality‎en_US
dc.subject.otherNoctiluca scintillansen_US
dc.subject.otheroxygenen_US
dc.titleSome observations on the mass mortality of fish at Ormara (east bay), Balochistan in ‎October 2016‎.en_US
dc.typeJournal Contributionen_US
dc.bibliographicCitation.issue2en_US
dc.bibliographicCitation.titlePakistan Journal of Marine Sciencesen_US
dc.bibliographicCitation.volume29en_US
dc.description.statusPublisheden_US
dc.format.pagerange83-98en_US
dc.subject.asfaASFA_2015::F::Fisheriesen_US
refterms.dateFOA2021-04-27T08:20:31Z
html.description.abstractMass mortality of fish and shellfish species was recorded from Ormara (East Bay) in ‎October 2016. Initially a few dead fishes were observed to be floating in the open sea in ‎the East Bay area. With the passage of time, mass mortality was observed on the south-‎western part of the East Bay and heaps of fish were found floating in the area. This ‎event of mass mortality was only confined to the Oramara (East Bay) and not spread to ‎other parts of Oramara coast. In order to determine the dynamic of the fish mortality ‎and its spread in the area, sampling of the water of the area was collected on regular ‎intervals. It was observed that Noctiluca scintillans (Macartney) Kofoid & Swezy, 1921 ‎was present in extremely large numbers (highest recorded concentration 13 cells/ml) ‎which led to depletion of oxygen in the area resulting in mortality of large number of ‎fishes. In this fish kill demersal (bottom dwelling) as well as pelagic species (surface ‎dwelling) were found dead in the area in large numbers. Groupers (Epinephelus spp.), ‎Chinese pomfrets (Pampus chinensis), mullets, shrimp (Penaeus spp.) and crabs ‎‎(Portunus spp.) were dominated in the dead fishes and shellfishes. Oxygen depletion was ‎observed to confine to south-western part of the Ormara Bay where highest number of ‎dead fishes were observed. The phenomenon of mortality of fishes continued for 8 days ‎whereas normal condition started prevailing in 15 days and no mortality was observed ‎after 20 days since the start of the mortality phenomenon.‎en_US
dc.description.refereedRefereeden_US


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