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  • 1
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    Distribution of freshwater turtles in Punjab, Pakistan (2021)
    In:  http://aquaticcommons.org/id/eprint/21682 | 17408 | 2017-11-27 10:32:34 | 21682 | University of Guilan, Faculty of Natural Resources, Iran
    Details
    Publication Date: 2021-06-28
    Description: A total of 3528 specimens of freshwater turtles belonging to two families viz., Geoemydidae (brown river turtle, Kachuga smithi; Indian saw-backed turtle, K. tecta; Brahminy river turtle, Hardella thurgi; spotted pond turtle, Geoclemys hamiltonii) and Trionychidae (Indian soft-shell turtle, Aspederates gangeticus; peacock soft-shell turtle, A. hurum; narrow-headed soft-shell turtle, Chitra indica; Indian flap-shell turtle, Lissemys punciata) were identified. Kachuga smithi (43.62%) and K. tecta (42.06%) had abundant population status, whereas, Hardella thurgi (0.88%) and Chitra indica (0.54%) were rare. Capturing of turtles for supply to foreigners and export is a major threat to these animals. Fishermen also kill them during fishing. Canal closure and de-silting is also harmful to turtles. It is concluded that it is necessary to provide immediate legal protection/coverage to all turtle species under the Punjab Wildlife Act, 1974, Pakistan; otherwise turtle species will become extinct.
    Keywords: Biology ; Distribution ; Freshwater ; Turtles ; Kachuga smithi ; Kachuga tecta ; Hardella thurgi ; Geoclemys hamiltonii ; Trionychidae ; Aspederates gangeticus ; Aspederates hurum ; Chitra indica ; Lissemys punciata
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 142-146
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  • 2
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    Diversity and seasonal variations of insects in Sandspit (backwater) mangrove forest (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26541 | 25017 | 2019-05-27 10:42:55 | 26541 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: The study deals with population diversity and seasonal variation of insectsin Sandspit mangrove forest dominated by grey mangrove Avicennia marina. In order toexamine the diversity and seasonal variations monthly data were collected fromNovember, 2007 to October, 2008. A total of 26 species of insects were recorded, mostof the species belonging to order Diptera. The highest diversity (H') 1.936 and richness(d1) 2.309 of insects were found in October while maximum value of evenness 1 wascalculated in September. The highest value of dominance (D) 0.851 was recorded inMarch. The result indicates that physical structure of mangrove vegetation facilitates thehabitation of insect fauna, canopy shade having an important function in providing coolerand wetter surface substrate at Sandspit area.
    Keywords: Biology ; Ecology ; Diversity ; seasonal variation ; insects ; Sandspit mangrove forest.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 61-66
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  • 3
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    Biodiversity of free-living marine nematodes from Arabian Sea of Pakistan (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26555 | 25017 | 2019-05-31 13:00:06 | 26555 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: Biodiversity patterns of free-living marine nematodes communities wereassessed by certain diversity measures in different localities of Sindh and Balochistanviz., Ibrahim Haidry, Korangi Creek, Clifton, Keamari, Sandspit, Hawksbay, ParadisePoint, Mubarak Village, Gadani and Sonmiani. A total of eighty nine nematodes weregathered from the studied areas which belong to sixty one nematode genera and twentysix families of five orders. The highest number of nematodes (30) was recorded fromSandspit beach and lowest (15) was from Mubarak village. The studied area exhibitedspatial variation in nematode biodiversity patterns. The species diversity indicesdemonstrate that Sandspit is the most stressed area where as Mubarak Village is the leaststressed area among the ten sampling spots.
    Keywords: Biology ; Shannon Weiner ; Diversity index ; Species richness ; Abundance ; Evenness ; Arabian Sea.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1-6
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  • 4
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    Determination of length-weight relationship of squid (Loligo duvauceli) found along Pakistan coast (2021)
    In:  http://aquaticcommons.org/id/eprint/17761 | 12051 | 2015-09-15 13:29:06 | 17761 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-06-29
    Description: Common squid (Loligo duvauceli) is caught as by-catch of shrimp trawlers inshallow coastal. waters off Pakistan. Size frequency data of squid for sexes combined collected from Karachi Fish Harbour were analyzed. The length-weight relationship of the form W = a.L b was determined and to mean length of squid sample measured compared with mean length derived from inverse equation was tested for any significant differences, none were observed and it wasinferred that the equation W = 0.243xL 2.2424 describe the relationship.
    Keywords: Biology ; squid ; Loligo duvauceli ; Pakistan coast
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 57-60
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  • 5
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    Short communication: First report of cyclopoid copepods (Oithonidae) from north-eastern Arabian Sea, Karachi, Pakistan (2021)
    In:  http://aquaticcommons.org/id/eprint/23145 | 18721 | 2018-06-18 20:15:18 | 23145 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-13
    Description: Among marine communities, the importance of small species has been neglected and major attention has been paid to the larger representatives. Small copepods are now assigned as a significant component within marine food webs. Their ecological habitat comprises estuarine, pelagic and coastal environments. Oithona plays a vital role as a food source for other copepods, Chaetognaths, fish larvae and planktivorous fishes. ... Therefore, the present study was conducted to determine the species composition of the genus Oithona previously not known from the coastal waters of Pakistan.
    Keywords: Biology ; Ecology ; Zooplanktons ; Copepods ; Cyclopoids ; Oithona ; Arabian Sea ; Mangrove forests ; Pakistan
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1114-1122
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  • 6
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    Meristic variations and skeletal deformities in natural population of mahseer fish, Tor putitora (Hamilton, 1822) (2021)
    In:  http://aquaticcommons.org/id/eprint/23184 | 18721 | 2018-06-19 18:16:36 | 23184 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-13
    Description: Skeletal deformities seriously relegate the biological performance of fish. The frequency of occurrence of different types of meristic variations and skeletal deformities were seen in the population of mahseer fish, Tor putitora, in two main reservoirs; Korang Stream, Islamabad and Dhobi Ghat Stream, Hassan Abdal. A total of ninety-five fish were caught randomly, forty-five from the unpolluted Korang Stream and fifty from the polluted Dhobi Ghat Stream by cast nets from February to July, 2009. Radiographs and dry skeletal preparation techniques were used to record meristic variations and skeletal deformities and describe various types and frequency of appearance. Deformities were studied under categories, Highest Frequency of Occurrence (HFO), Normal Frequency of Occurrence (NFO) and Lowest Frequency of Occurrence (LFO). In the deformed fishes, significant (p〈0.001) anomaly was noticed in nineteenth to twenty second and forty one to forty third (p〈0.05) vertebrae of the vertebral column. Deformities scoliosis (C2, 5.26%), platyspondyly (C5, 11.27%), and abnormal neural spine (TC25, 13.53) appeared to affect 70%, 60% and 50% of the deformed individuals respectively. This study concluded that skeleton deformities in T. putitora population in the laundry waste water of Dhobi Ghat Stream have relevance with detergent waste, as a possible causative agent.
    Keywords: Biology ; Environment ; Pollution ; Meristic variations ; Skeleton ; Deformities ; Tor putitora ; Pakistan
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 208-216
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  • 7
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    Taxonomy of the genus Spatoglossum (Dictyophyceae, Phaeophycota) in the coastal waters of Karachi (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26549 | 25017 | 2019-05-30 12:56:23 | 26549 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: Three flattened, striped species of Spatoglossum Kützing were collectedfrom northernmost part of the Arabian Sea and taxonomically investigated. First timedetailed taxonomic study of the algal genus from the coast of Pakistan, based on a largesurvey (1989-1996) of different coastal areas of Karachi. This study revealed threespecies of the genus which are examined taxonomically which included morphology,anatomy as well as reproduction.
    Keywords: Biology ; Algae ; Phaeophycota ; Spatoglossum ; taxonomy ; growth ; Arabian Sea.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 33-44
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  • 8
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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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  • 9
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    A checklist of molluscans inhabiting Bandri Beach along the Jiwani coast, Balochistan, Pakistan (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26622 | 25017 | 2019-06-05 06:23:29 | 26622 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: Main object of the study was to record the composition and diversity of intertidal molluscan species of the Bandri Beach along the Jiwani coast, Balochistan to develop baseline data information which could be helpful in future conservation perspective. The study revealed the presence of ninety eight (98) species comprising of sixty eight (68) gastropods, twenty six (26) bivalves, two (2) scaphopods, one (1) Polyplacophora and one (1) Cephalopod species at two selected points of the Bandri Beach, Jiwani coast. Among these molluscan species, members of cerithids, trochid Umbonium vestairium, bivalve Branchidontes variabilis and oyster Crassostrea madrasensis were found in abundance. Study presents the first report on the occurrence of molluscan species in the area.
    Keywords: Biology ; Molluscs ; checklist ; Bandri Beach ; Jiwani ; Balochistan coast ; Pakistan
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 61-71
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  • 10
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    Short communication: Current fishery status of ribbonfish Trichiurus lepturus Linnaeus, 1758) (Trichiuridae) from Makran coast (northeast Arabian Sea) (2021)
    In:  http://aquaticcommons.org/id/eprint/23119 | 18721 | 2018-06-18 16:50:59 | 23119 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-12
    Description: Ribbonfishes are typical inmates of pelagic waters of the world oceans and it is a cosmopolitan species (Parin, 1968., 1988; Nakamura and Parin, 1993). It is a slim, commercially important marine species of Pakistan. Ribbonfish are spread in the Indo-Pacific and Atlantic areas as well as throughout the Indian coast with plenty in the northwest and central east coasts (Nair and Prakasan, 2003). They belong to the family Trichiuridae and are represented in Pakistani waters by two species namely, Trichiurus lepturus, and Lepturacanthus savala .These species are found all over the year but the abundant species in Pakistan is T. lepturus (Bianchi, 1985).
    Keywords: Biology ; Fisheries ; Length-weight relationship ; Ribbon fish ; Fishery ; northeast Arabian Sea ; Pakistan
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 815-821
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