Description of stomatopod larvae from the Arabian Sea

The Northern Arabian Sea Ecological and Environmental Research (NASEER) Programme cruise I, January, 1992 and other collections from Manora Channel (Karachi) were examined. Six stages i.e. IV, VII, VIII, IX, X and XI of stomatopod larvae are recognized. Day samples talen in 1994 (January to December) from Manora Channel revealed the presence of only three specimens of stage IV. They all belong to the family Squillidae. Each stage is measured, described and illustrated. None of the stages could be correlated to their adults

New record of Phrosina semilunata Risso, 1822 (Crustacea: Amphipoda: Phrosinidae) from Sindh territorial waters (Northern Arabian Sea)

Hyperiids are pelagic, mostly oceanic amphipods; few species are found in coastal waters. Phrosina semilunata Risso, 1822 belongs to the family Phrosinidae. The species P. semilunata has been previously reported from the Arabian Sea by Barnard (1937) and also from its southern part by Pillai (1966).The description of the monotypic genus Phrosina given by Bowman and Gruner (1973) is based only on female. Since in our collection specimens of both sexes are present, the male description would be the first one for this phrosinid population, it being important from the point of view of sexual dimorphism in head appendages found in the species. The specimens are housed in the MRC (cat No.AMPH-10)

A check list of opisthobranch snails of the Karachi coast

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

Rediscovery of Neocallichirus audax (De Man, 1911) (Decapoda: Thalassinidea) from Pakistan coast

Deep burrowing thalassinid shrimps also known as mud shrimp or ghost shrimp dominate soft sediment of muddy and sandy beaches. They serve their community by turning over the sediments and facilitating the nutrient influx by their burrowing. From sandy beaches of Pakistan coast four species of the family Callianassidae are known; these are Glypturus martensi (Miers), Neocallichirus audax (de Man), N. indicus (de Man), Podocallichirus masoomi (Tirmizi) (Tirmizi, 1967, 1970, 1974; Kazmi and Kazmi, 1992)

An illustrated key to the Malacostraca (Crustacea) of the northern Arabian Sea. Part 3: Euphausiacea

The key includes twenty-one species of euphausiids belonging to two families and six genera. The key was prepared following Brinton (1975). Since several authors attributed a fundamental importance to thelycum in systematics of euphausiids therefore the available figures of thelycum are also included

Taxonomic studies on developmental stages of Balanus sp. from Karachi (Northern Arabian Sea)

Present study deal with the identification of nauplius stages of Balanus sp. Collected during plankton and sediment sampling from Karachi coast. The stages are described, illustrated and compared with available literature

Morphological study of Cristapseudes omercooperi (Larwood, 1954) (Crustacea: Tanaidacea: Kalliapseudidae) manca stage I from Pakistani waters (Port Qasim)

Present paper deal with the morphological study of Cristapseudes omercooperi (Larwood, 1954) Manca stage I. Sediment samples were taken from Port Qasim (Lat. 25o46’N Long. 67o21’E) during 2008. The stage is described and illustrated

Study of planktonic and benthic caught naupliar stages of Rhincalanidae and Diosaccidae

The zooplankton samples and benthic samples were taken from Pasni Bay (Lat 25 deg 16’N Long 63 deg 29’E) and Sandspit (Lat 24 deg 50’ 24”N Long 66 deg 54’ 24” E) respectively. Present study is undertaken to study the planktonic naupliar stage of Rhincalanus sp. of Rhincalanidae and a benthic naupliar stage of unidentified Diosaccidae

Larval developmental stages of Athanas dimorphus Ortmann, 1894 (Crustacea, Caridea, Alpheidae) in laboratory from Pakistan

An ovigerous female of Athanas dimorphus Ortmann, 1894 captured from intertidal zone at Buleji (Karachi, Pakistan) on December 03, 2005 was kept under the laboratory conditions. The larvae were hatched out on December 07, 2005. The zoea I of Athanas dimorphus passed through II, III and IV zoeal stages within four days at room temperature: 23°C-26°C, in filtered seawater with salinity of 35-37‰ and pH 7.5-7.9. The developmental stages are described along with their illustrations and compared with the available descriptions of Athanas dimorphus larvae given by Gurney, 1927 for the first stage and Bhuti, et al., 1977 for first three stages. Thus, the fourth stage is being described for the first time not only in the species but in the genus Athanas