ONCOCYTOMA OF THE NASAL CAVITY

ABSTRACT Oncocytoma of the nasal cavity is an extremely rare condition with only a few cases reported in the literature. A case of oncocytoma of the nasal cavity in a 12 years old Nepali boy is presented along with a brief review of the relevant literature. Key Words: Oncocytoma, Oxyphil adenoma, Nasal cavity

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Not AvailableRecent survey in lower 1,110 km stretch of River Ganga regarding ‘hook and line’ fishery revealed that fishers apply their inherited indigenous knowledge for selection of bait to harvest finfish and shellfish from river water. A total number of 26 different types of baits under 07 categories were recorded. Six varieties of fish species and four types of insects are found to be prevalent for catching carnivorous fishes. Five specially modified indigenous types of bait moulded with fish attractants were also documented. Bait-fish species association in hook and line fishery of river Ganga is discussed. Feeding habits of the target fishes was compared with the type of baits employed. Conservation issues associated with hook and line fishery is highlighted along with possible remedial measures. Different varieties of hook & line fishery which are in operation in river Ganga are briefly described. Indigenous Traditional Knowledge (ITK) associated with hook & line fishery needs to be properly documented and preserved for developing and encouraging ‘sport fishery’ in River Ganga.Not Availabl

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Not AvailableTen indigenous freshwater fish species belonging to nine genera and seven families were collected from Gandak River, Bihar, India during December, 2014 to September, 2016. Fishes were caught using Cast nets, Gill nets, Drag nets with mesh size of 15–20 mm, 25–30 mm and 5–10 mm respectively along with Traps. Sampling was done during dry and wet seasons and a total of 682 fish were collected for analysis of their Length–Weight Relationships (LWRs). Analyses included seven species for which no previous LWRs information were available in FishBase, and new maximum lengths were recorded for three species.Not Availabl

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Not AvailableIn India, large rivers are experiencing serious threat to aquatic biodiversity, and therefore flagship projects are being executed on freshwater biodiversity conservation using various methods and strategies. Ganga River is the largest and longest river of India supporting rich commercial and artisanal fisheries for decades. Periodical and systematic assessments of fish biodiversity of the large river ecosystem are important for effective conservation planning. Although over the years, the ichthyofaunal diversity of the river has been assessed under different programmes, however current assessment of fish diversity across different zones are not adequately studied and reported. In the present study systematic re-explorations were carried out and changing pattern of fish diversity and distribution during the period 2016–19 was recorded. We described a total of 190 fish species (182 indigenous and 8exotics) belonging to 133 genera, 62 families and 23 orders from upper Ganga (Harsil) to the river mouth of Hooghly estuary (Fraserganj). The assessment of native species revealed about 10% and 14.21% of the total species are listed under threatened status of IUCN Red List (version 2020) and CAMP (1998) threatened category respectively. Among the exotics, common carp (Cyprinus carpio) and tilapia (Oreochromis niloticus) was found dominated in upper, middle and part of lower stretch. The study showed considerable dominancy of major and minor catfish followed by small indigenous fishes. The evaluation of species richness through biodiversity matrices resulted the lower stretch to be the richest zone forming a strong cluster relationship (>0.71) among all the stations. The analysis of similarity percentage (SIMPER) of all the stations revealed an average similarity of 4.59% between all the stations. Shift in distribution pattern of few fish species was also recorded in certain sections of the river. The study indicated drastic decline of commercially important major carps and catfishes in comparison to previous records. The present paper also discussed about the potential threats and important guidelines concerning sustainable fisheries of River Ganga. The comprehensive information presented in this paper on fish diversity, distribution, abundance, production trend of major fish group of the river in different zones have highlighted relative change as compared to previous studies that will be useful for monitoring biodiversity and future conservation planning of the river basin.Not Availabl

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Not AvailableSerum immunoglobulins (Ig) of mrigal Cirrhinus mrigala (Hamilton 1822) immunised with bovine serum albumin (BSA), were purified by affinity chromatography using BSA-CL agarose column. The purified mrigal Ig (m-Ig) was characterised under reducing condition by Sodium Dodecyl Sulphate Polyacrylamide Gel Electrophoresis (SDS-PAGE) which revealed two bands of 85 and 26 kDa corresponding to heavy and light chain, respectively. Following fusion of splenocytes from Balb/c mice immunised with purified m-Ig with myeloma cells, three hybridomas showing reactivity with m-Ig were cloned by limiting dilution. The monoclonal antibodies (MAbs) generated by these clones were designated as 3B2-E12, 3B2-F9 and 4C3-B2 and characterised by western blotting and isotyping. Western blot analysis of the supernatant from the three clones with purified m-Ig indicated that, all the three MAbs were specific to heavy chain. Isotyping revealed that 3B2-E12 MAb was of IgG1 isotype whereas the other two MAbs were of IgG2a isotype. Cross reactivity of anti-mrigal Ig MAb (3B2-E12) was observed with serum Ig of Catla catla and Labeo rohita indicating semi-conserved nature of Ig in Indian major carps.Not Availabl

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Not AvailableStudies on Sisorinae systematics have been largely restricted to morphological data with few studies on examination of phylogenetic relations. However, no study has been done to evaluate genetic distance of the genera under Sisorinae sub-family and detailed phylogenetic relations within it. We used nuclear recombination activating 2 (rag2) gene and mitochondrial cytochrome c oxidase I (COI) gene from 64 species to examine genetic differentiation and phylogenetic relationships within 11 Asian Sisorinae genera. The range of interspecies K2P distance for rag2 was 0–0.061 and COI was 0–0.204. Phylogenetic analysis based on maximum likelihood (ML) and Bayesian (BI) approaches for each locus individually and for the concatenated rag2 and COI sequences revealed three major subclades viz. Bagariini, Sisorini and Erethistini under subfamily Sisorinae. The analysis based on COI gene showed ((Sisorini, Bagariini), Erethistini) relationship. Rag2 and combined rag2 and COI showed ((Sisorini, Erethistini), Bagariini) relationship. Combined rag2 and COI analyses resulted into better resolved trees with a good bootstrap support. In this study, new record of Pseudolaguvia foveolata (Erethistini) has been documented based on 13 specimens collected from Torsa River, Jaldapara, Alipurduar district, West Bengal, India (26°43′44.66″ N and 89°19′32.34″ E), extending its distribution range in Brahmaputra drainage, India. The genetic distance between the P. foveolata new record and the reported P. foveolata (holotype: UMMZ 244867) was 0.00 at both rag2 and COI locus and it was further grouped with P. foveolata Type specimen (holotype: UMMZ 244867) with 100% bootstrap support. This report gives additional information on occurrence of the species P. foveolata, along with discussion on morphometric, meristic and molecular (COI and rag2 gene) data.Not Availabl

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Not AvailablePresent study provides length–weight relationships (LWRs) and length–length relationships (LLRs) of eight fish species from river Ganga, India. Specimens were sampled from gill nets (mesh, 22–120 mm), cast nets (mesh, 12–14 mm), and seine nets (mesh, 12 mm) on quarterly basis from September 2016 to September 2017 within the river stretch from Buxar (25°33′43.90″N and 83°56′3.10″E) to Freserganj (21°35′40.58″N and 88°15′28.92″E). The b value ranged from 2.86 (Otolithoides pama) to 3.08 (Polynemus paradiseus), whereas a value ranged from 0.004 (P. paradiseus) to 0.016 (Rita rita). Both relationships (LWRs and LLRs) were found to be highly correlated (p < .001). This study provides first report on LWR for Amblyceps mangois and Osteobrama cotio, whereas new maximum length recorded for Macrognathus pancalus. Furthermore, the estimate of R. rita should be considered as tentative because of the limited size range in the studyNot Availabl

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Not AvailableThe present study reports a record of invasive Loricariid catfish Pterygoplichthys disjunctivus (Weber, 1991) (Siluriformes: Loricariidae) from the Bhagirathi–Hooghly system of River Ganga in West Bengal, India. The species was encountered from Farakka and Balagarh regions of Ganga, two areas with different hydrological regimes. The average total length and total weight of the collected species was in the range of 360–450 mm and 314-545 g respectively. This exotic species is reported to contribute about 10% of the total catch from the Balagarh area of the river stretch, while its occurrence is sparse in Farakka. The algivorous nature of feeding can pose a threat to nativebottom dwelling fish due to feeding competition. As the presence of this exotic fish in the lower parts of Ganga has been confirmed, we discuss necessary management interventions like identifying the source of its introduction in order to prevent future threats from this invasive species to native river species.Not Availabl