Not Available

Not AvailableAn environment friendly and sustainable approach is being emerged in the area of nanotechnology for ac- celerated growth and development of culturable aquatic animals hence green chemistry is gaining momentum in recent years. The present study has been carried out to delineate the effects of selenium nanoparticles (Se-NPs) on growth performance, antioxidative status and immunity of fish reared under lead (Pb) and high temperature (34 °C). Three hundred and fifteen fish were equally distributed in seven treatments in triplicates. Three iso- caloric and isonitrogenous experimental diets viz. control (Se-NPs-0 mg/kg), Se-NPs at 1 mg/kg and Se-NPs at 2 mg/kg were formulated. The fish were reared under lead (Pb, 1/21st of LC50 (4 ppm)) and high temperature (34 °C) stress and fed with or without dietary Se-NPs. The effects of dietary Se-NPs were studied in terms of growth performance (Weight gain %, feed conversion ratio, protein efficiency ratio and specific growth rate), antioxidative status (catalase, superoxide dismutase, glutathione-S-transferase and glutathione peroxidase), neurotransmitter enzymes (AChE), stress biomarkers (heat shock protein 70, serum cortisol, blood glucose, vi- tamin C), immunological status (total protein, A/G ratio and respiratory burst activity) in Pangasinodon hy- pophthalmus post challenge with Aeromonas veronii biovar sobria. Results of the investigation demonstrated sig- nificant improvement of growth performance, antioxidative status, neurotransmitter enzyme activity, stress markers and more importantly enhanced immunity of the fish with dietary incorporation of Se-NPs at 1 mg/kg. In addition, post bacterial infection, the relative % survival increased and cumulative mortality % decreased in the group fed with Se-NPs at 1 mg/kg diet. Pb and high temperature treated and fed with control diet group showed devastating impact on the growth performance, antioxidative status, stress markers and immunity of the fish. Similarly, application of Se-NPs at 2 mg/kg showed poor growth performance and elevated level of oxi- dative stress and other stress biomarkers including other biochemical attributes. Inclusive results indicated that, Se-NPs at 1 mg/kg has capability to enhance overall performance and alleviate multiple stresses in P. hy- pophthalmus. Hence, Se-NPs at optimum level have ability to develop green chemistry in feed industry for better growth performance of the fish.Not Availabl

Not Available

Not AvailableUnexpected fluctuations in weather parameters due to global climate change have been observed in all eco- systems worldwide. The aquatic ecosystem shelters a great diversity of fishes in the upper region of the eco- system which adversely get affected due to their poikilothermic nature. The present study was designed to elucidate the impact of critical temperature minima (CTMin), lethal temperature minima (LTMin), critical temperature maxima (CTMax), and lethal temperature maxima (LTMax) on Channa striatus. Biologically syn- thesized silver nanoparticles (Ag-NPs) were evaluated for their potential to enhance thermal tolerance and improve the activities of biochemical enzymes of C. striatus reared under lead (Pb) and high temperature (34 °C) for 50 days. Three iso-caloric and iso-nitrogenous diets which included a basal diet and two supplemented diets with Ag-NPs @ 0.5 mg/kg, and 1 mg/kg were used in the study. Results suggested that CTMin and LTMin were significantly (p < 0.01) reduced and CTMax and LTMax were enhanced in the group fed with 0.5 mg/kg Ag-NPs supplemented feed. Pre-exposure to high temperature led to enhanced CTMax and LTMax in C. striatus. The biochemical enzymes involved in protein metabolism, carbohydrate metabolism, acetylcholine esterase and antioxidant activities were found to be normal in fish fed with 0.5 mg/kg Ag-NPs supplemented diet. Bioaccumulation of silver and Pb was determined in different fish tissues and experimental water. Overall, the incorporation of Ag-NPs at 0.5 mg/kg in diet can confer protection to fish against Pb and thermal stress and enhance thermal tolerance of C. striatus.Not Availabl

Not Available

Not AvailableMajor diseases of catfish (Pangasius): Diagnosis and management approachesNot Availabl

Not Available

Not AvailableA metacercarial infection of Posthodiplostomum sp. (Strigeidida: Diplostomidae) was reported in the cyprinid fish, Labeo catla and Pethia conchonius and was identified based on clinical signs, cyst morphometry and characteristic histopathological lesions. The parasite was oval-round in shape, encysted in musculocutaneoustissues, and well encapsulated. The cyst was 1.02±0.02 by 0.79±0.02 mm and 1.02±0.02 by 0.75±0.02 mm in L. catla and P. conchonius, respectively. Microscopically, the multifocal hyperpigmented areas in the musculocutaneous tissues showed pericystic melanization, focal necrosis, and an infiltration of mononuclear leukocytes. Out of the 5,820 freshwater fish examined, only 3 L. catla were found to be infected in October at the Balagarh and in August, 13 P. conchonius were found to be infected at the Farakka stretch of the Ganga River. The spatio-temporal prevalence of Posthodiplostomum sp. in L. catla and P. conchonius was <1%, indicating a lower infection rate. This is the first report of Posthodiplostomum sp. infection in P. conchonius and from the Ganga River. It is also the first report of Posthodiplostomum sp. infection in L. catla in the Ganga RiverNot Availabl

Not Available

Not Availableroadmap for fisheries development in mauns and chaurs in BiharNot Availabl

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

Not Available

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

Not Available

Not AvailableBiotic communities are sensitive to environmental factors and offer an integral perspective of the environmental conditions of a given habitat. Fish are widely used as sentinel species to assess environmental health and are excellent indicators of overall health of rivers. A study was carried out to evaluate and compare the environmental quality of different stretches of River Mahanadi by analyzing fish health using Health Assessment Index (HAI). The HAI values of individual fishes varied from 0 to 200. The fish which got the highest score for HAI was from the winter sample of Sonepur. The lowest score for HAI was recorded at Tikarpara, a site which falls under protected Satkosia river sanctuary. The most common groups of parasites recorded were myxozoans, trichodinids, copepods and monogenetic trematodes. Parasite numbers recorded from Cirrhinus reba supported the HAI hypothesis that higher endoparasite and lower ectoparasite numbers occur at highly impacted areas. The present study suggests that HAI can be used as an effective biological monitoring tool for Indian rivers.Not Availabl

Not Available

Not AvailablePrawn and crab fisheries in Tapti River – A peninsular river, India.Not Availabl

Not Available

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