• A check list of opisthobranch snails of the Karachi coast

      Kazmi, Quddusi B.; Tirmizi, Nasima M.; Zehra, Itrat (1996)
      The check list deals with 44 species of opisthobranchs belonging to Cephalaspidea (12 species), Anaspidea (4 species), Sacoglossa (4 species), Notaspidea, (2 species) and Nudibranchia (21 species), collected from Pakistan coast of northern Arabian Sea.
    • A checklist of molluscans inhabiting Bandri Beach along the Jiwani coast, Balochistan, Pakistan

      Ghani, Abdul; Afsar, Nuzhat; Moazzam, Muhammad (2018)
      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.
    • A new deep-sea crab, genus Chaceon, from the Arabian Sea (Crustacea, Decapoda, Geryonidae)

      Manning, R.B. (1993)
      The sixth nominal species of Chaceon to be recorded from the western Indian Ocean is named from a specimen collected off Somalia in 504-506 meters. Chaceon somaliensis, n. sp., resembles C. macphersoni (Manning and Holthuis, 1988) and differs from the other four species known from the area in having the dactylus of the walking legs dorsoventrally depressed. It differs from C. macphersoni in having slenderer legs, a smoother body, and a much deeper, evenly curved orbit.
    • A new distributional record of Astropecten polyacanthus Muller and Troschel, 1842 (Echinodermata: Asteroidea) from the coastal waters of Pakistan

      Tahera, Q. (2006)
      Previously an asteroid starfish Astropecten indicus has been described by Tahera (1996), and another species of the genus Astropecten i.e. A. polyacanthus Muller and Troschel, 1842 has been collected from the subtidal region of a sandy shore of Clifton (24°47'42"N 66°59'6"E), Karachi. The latter species is here reported for the first time from the Pakistan coast of the northern Arabian Sea and fills the gap in the known distribution. The species is briefly described and illustrated.
    • A new distributional record of Zozymodes cavipes (Dana, 1852) (Crustacea; Decapoda) from the coastal waters of Pakistan

      Tirmizi, N.M.; Ghani, N. (1992)
      One male and one female of Zozymodes cavipes (Dana, 1852) have revently been collected from the rocky shores near Karachi; the species is widely distributed in the Indo-Pacific region. It is, however, being reported for the first time from the pakistani coast of the northern Arabian Sea and thus fills the gap in the known distribution of the species. The pakistani material is housed in the Marine Reference Collection Centre, University of Karachi. The specimens are briefly descibed below. Only restricted synonym is given.
    • A new parasitic isopod of the genus Norileca (Crustacea, Cymothoidae) from the Arabian Sea

      Javed, W.; Yasmeen, R. (1999)
      A new species Norileca borealis belonging to the family Cymothoidae is described in detail and illustrated. The new species is distinguished from the other members of the genus by the details of maxilla 2, maxilliped, pleotelson and pereopod 1.
    • A new record of Excirolana Orientalis (Dana, 1853), a cirolanid genus and species (Isopoda, Flabellifera) from the Pakistan coast

      Yasmeen, Rehana (2002)
      Excirolana orienta/is (Dana, 1853) belonging to the Cirolanidae, hithertounknown from Pakistan, is collected from the rocky intertidal region of Manora Island, Karachi coast The specimens are fully described and illustrated. A list of the known species of the genus Excirolana is also provided since the genus is also first time reported from here.
    • A new record of Paracerceis sculpta (Holmes, 1904) (Sphaeromatidae: Isopoda) from Pakistan, northern Arabian Sea

      Yasmeen, Rehana; Javed, Waquar (2001)
      This paper records the presence of Paracerceis sculpta (Holmes, 1904) for the first time from the Northern Arabian Sea. Features of taxonomic importance are illustrated and briefly described.
    • A new species and a new record of Sphaeromopsis Holdich and Jones, 1973 from Pakistan waters (Isopoda, Sphaeromatidae)

      Javed, W.; Yousuf, F. (1995)
      Sphaeromopsis minutus, sp. nov., the sixth species of Splitteromopsis Holdich and Jones is described and figured in detail. The genus Sphaeromopsis and species S. serriguberna Holdich and Harrison, 1981 is recorded for the first time from northern Arabian Sea, Karachi (Pakistan).
    • A new species and a new variety of Amphisolenia Stein from the north Arabian Sea bordering Pakistan

      Mansoor, S.; Saifullah, S.M. (1995)
      A new species Amphisolenia nizamuddinii Mansoor and Saifullah sp. nov. and a new variety Amphisolenia schroederi var. pakistanensis Mansoor and Saifullah var. nov. are hereby described from Pakistan's shelf and deep sea vicinity during the transition period between the northeast and southwest monsoon seasons.
    • A new species of Cyphocarcinus and a new record of Macropodia formosa Rathbun (Crustacea, Decapoda, Majidae) from Pakistan

      Kazmi, Q.B.; Tirmizi, N.M. (1995)
      The present paper includes a new species and a new record of majid crabs. The new species is referable to the genus Cyphocarcinus, subfamily Mithracinae of which only the genus Micippa was known from the region. Macropodia formosa Rathbun is being recorded for the first time from Karachi and belongs to the subfamily Inachinae. Both the species are described and illustrated. The new species is compared with its allied species.
    • A northern Indian Ocean record of a bopyrid, Parapenaeon japonica (Thielemann, 1910) parasitic on species of penaeid prawns (Penaeus)

      Kazmi, Q.B.; Tirmizi, N.M. (1994)
      A female of Penaeus merguiensis de Man collected from Karachi fish harbour (8 May, 1993) was with a large specimen of bopyrid in its right gill chamber. Since this was the second record (see Tirmizi and Bashir, 1973) of a bopyrid from a species other than Parapenauopsis stylifera H. Milne-Edwards the specimen was examined out of curiosity.
    • A numerical taxonomic study of the genus Padina Adanson (Phaeophyta, Dictyotales) from Karachi (Pakistan) coast

      Begum, Mubina; Khatoon, Naushaba; Shaukat, Syed Shahid (2001)
      During taxonomical survey of Phaeophyta (Dictyotales) 7 species of Padina Adanson were reported from the coast of Karachi (Pakistan). This study deals with the numerical analysis of 7 species of Padina Adanson performed to solve the problem of overlapped characters with regard to morpho-anatomical and reproductive criteria of the species differentiation in Padina. Objective classification highly supported the results based on traditional taxonomy despite the complexities in the genus Padina.
    • A preliminary study for establishing Perna viridis (Mollusca:Bivalvia) as a biological monitor for pollution in Karachi coastal water

      Zehra, Itrat; Naz, Huma; Naqvi, Iftikhar Imam (1996)
      Adverse effects of toxic substances on the environmental quality have become a subject of concern in recent years. Toxicity of heavy metals has never been in dispute and therefore their presence in our natural environment is undesirable. This study was undertaken to establish the capability of Perna viridis as a monitor for pollution in the Manora channel. Accumulation of Zinc, Copper, Iron and Manganese by marine mussels, sampled from Manora channel, was determined. Metal load varied markedly between individuals from the same populatin. This variability was partly accounted for systematic relationship between metal load and body weight and age. The distribution of metal between the major organs was considered, but the analysis of separate organs showed no advantage for their use as a biological monitor. comparison between Iron, Manganese, Copper and Zinc concentration in ambient sea water and in the mussel showed no clear correspondence. The results suggest that the mussel is capable of acting as a biological monitor, although may not be a good short term monitor of Iron, Manganese, Zinc and Copper. It may have potential as a long term and site comparison monitor for metals, once inherent variability is taken into account
    • A preliminary study of soil analysis of Sonmiani, Gadani and Kund Malir coasts of District Lasbela, Balochistan, Pakistan

      Bano, Azra; Zahid, Muhammad Aleem; Arsalan, A.; Abdullah, Muhammad; Khan, Asadullah; Saleem, Gohar; Ahmed, Noor (2015)
      The purpose of the soil analysis is to study the beach characteristics ofdifferent coasts of Balochistan. Three sites Sonmiani, Gadani and Kund Malir wereselected. The Gaddani coast is known as sandy cum rocky shore, Sonmiani as sandy cummuddy shore while Kund Malir is sandy. Three different stations were selected on eachsite for sampling. At each station, five different samples were collected. At all three sites,the amount of medium and fine sand showed greater amount and very fine sand depictedlesser. The results showed that soil samples collected from three coasts mostly havehighest fraction of find sand and lowest portions of very fine sand. At Sonmiani the soilcomposition is fine sand and very fine sand as compared to Gadani where the soil is offine sand and medium sand and at Kund Malir the soil is of fine sand along with mediumsand but very fine sand also present.
    • A preliminary study on the heavy metal levels in Ophelia bicornis (Savigny, 1820) in the Black Sea

      Bat, Levent; Arici, Elif; Öztekin, Aysah; Yardim, Öztekin (2016)
      In the current work, the levels of mercury, cadmium, lead, copper and zinc have been determined in Ophelia bicornis and in sediments collected seasonally from the Sinop coast of the southern Black Sea in 2015. Hg and Pb levels were usually greater in sediment than those in worms. Cd, Cu and Zn levels, however, were higher in the worm samples. Zn had the maximum concentration factor average and Pb displayed the minimum concentration factor value. It may be turned out that O. bicornis has capability to accumulate the heavy metals from the marine ecosystem and it will be used as a bio-monitor species for Cd, Cu and Zn in the Black Sea.
    • A redescription of Diogenes senex Heller, 1865, sensu stricto (Decapoda: Anomura: Paguridea: Diogenidae)

      McLaughlin, Patsy A.; Haig, Janet (1995)
      Diogenes senex Heller, 1865 sensu stricto is redescribed from specimens collected in Australia, particularly in and around the type locality of Sydney. A neotype has been designated. Comparisons of this material with other specimens identified as D. senex by a number of authors has shown that at present only the Australian material truly represents Heller's taxon.
    • A review of spider majid crabs of the northern Arabian Sea, with particular reference to Pakistani species, and with description of an undescribed Pleistacantha

      Kazmi, Q.B. (1997)
      The present report deals with the history of work done on northern Arabian Sea majids, their zoogeographical consideration and recognition of present status of certain genera which are established by recent workers. I have nothing of substance to add to previous treatment by Griffin & Tranter (1986). Emphasis is given to species inhabiting coastal waters of Pakistan. The occurrence of the genus Pleistacantha in the Arabian Sea and its adjacent gulfs is discussed in detail due to presence of a unique female which was taken by Fridtj of Nansen Cruise in 1977. This seems to be an undescribed species. At the moment the female is just given as Pleistacantha sp1 till more specimens obtained determine its position. Some interesting features of Doclea muricata are also considered.
    • A study of the male reproductive organs of nine species of penaeid prawns (Crustacea: Penaeinae)

      Sultana, R.; Mustaquim, J.; Tirmizi, N.M. (1994)
      This paper deals with the male reproductive organs of nine species of penaeid prawns; Penaeus penicillatus Alcock, P. merguiensis De Man, P. semisulcatus De Haan, Metapenaeus affinis (H.Milne Edwards), M. monoceros (Fabricius), M. stebbingi Nobili, Parapenaeopsis hardwickii (Miers), P. sculptilis (Heller) and P. stylifera (H. Milne Edwards). The male reproductive organs exhibited structural variations, which were more pronounced at generic level. These variations are mainly due to the type of spermatophore they possess. One species of each genus, that is, P. merguiensis, M. affinis and P. sculptilis were also studied histologically to examine the internal structure of the male reproductive organs. Spermatophores of the six species belonging to the genera Penaeus and Parapenaeopsis are also described and illustrated.