HATASO Journal Management System

Volume 7,Issue 2016, 2016

May-10-2021

Volume 7, Year 2016

An Introduction about Genotoxicology Methods as Tools for Monitoring Aquatic Ecosystem: Present Status and Future Perspectives

A Study on the Determination of Heavy Metals in Sediment of Fish Farms in Bangladesh

Influence of Dietary Sorghum Starch on Growth Performance, Digestibility Coefficient and Some Hepatic Enzyme Activities in Hybrid Red Tilapia (Oreochromis mossambicus × Oreochromis niloticus) Fingerlings

Macrobenthic Community Structure - An Approach to Assess Coastal Water Pollution in Bangladesh

Pathological Findings of Experimental Aeromonas hydrophila Infection in Golden Mahseer (Tor putitora)

ntroduction: Mahseers, belong to the family Cyprinidae, are well renowned for the excellent game as well as food fishes. Various aspects simultaneously considered towards the domestication of this fish species also include the study of fish health issues, preventive and remedial programmes for sustainable aquaculture. Experimental studies can be conducted in the control condition to study the pathological symptoms during bacterial infection. Considering the bacterial pathogens as a major constraint for aquaculture, the present study was carried out to standardize the bacterial concentration of A. hydrophila for the experimental challenge of Golden Mahseer for the first time, and various clinical changes were also monitored during the infection. Materials and methods: A total of 140 live fishes were acclimatized to the laboratory conditions for experimental study. A constant water quality was monitored during the acclimation period and throughout the experiment. The test group was injected with A. hydrophila and various physiological, biochemical and tissue level changes were observed during the experiment in comparison to phosphate buffer saline (PBS) injected control group. Results: LD50 value of A. hydrophila for Golden Mahseer was successfully standardized. Clinical signs including weakness, slower movement, swimming closer to the surface, fin haemorrhages and red patches at the gut region were observed. Enlargement of spleen followed by tissue necrosis along with signs of haemorrhagic septicaemia was also seen in infected fishes. The necrosis of hepatocytes was observed in the histological section of liver tissue. The bacterial infection increases the superoxide dismutase activity and cortisol level in Golden Mahseer. Conclusion: The LD50 value of A. hydrophila for experimental challenge studies on Golden Mahseer is 1.74 × 105 cfu per 100 g of body weight. The symptoms of severe bacterial haemorrhage were observed. Necrosis of hepatocytes was observed in infected fishes. The superoxide dismutase activity and cortisol level also increased in infected fishes. A. hydrophila was confirmed to be the etiological agent which was re-isolated using spread plate method and confirmed by 16s rRNA sequencing.

Potential Use of Mussel Farms as Multitrophic On-growth Sites for American Lobster, Homarus americanus (Milne Edwards)

Retention of Fillet Coloration in Rainbow Trout After Dietary Astaxanthin Cessation

The Fish Catching Devices with their Efficacy and Cost-benefit Analysis in the Towkak River in Assam and Nagaland, India

A Review on Feeding and Reproductive Biology of Cirrhinus reba (Hamilton, 1822), A Threatened Freshwater Fish of Indian Subcontinent with an Emphasis on its Conservation

In-season Forecast of Chum Salmon Return Using Smoothing Spline

Inventory of Ichthyofaunal Diversity, Fishing Gear and Craft in Turag River, Dhaka, Bangladesh

Is There Any Species Specificity in Infections with Aquatic Animal Herpesviruses?–The Koi Herpesvirus (KHV): An Alloherpesvirus Model

Livelihood Status of Hilsa (Tenualosa ilisha) Fishermen of Greater Noakhali Regions of Bangladesh

Longitudinal Exploitation of the Transversal Gradient of Oreochromis niloticus (Linné, 1758) Gill System by Four Monogenean Species at Melen Fish Station (Yaounde, Cameroon)

Production and Purification of Recombinant Somatolactin and its Effects on Insulin-like Growth Factors Gene Expression in Tilapia Hepatocytes

Shift of Small Scale Fishing Impacts on Fish Trophic Levels in Lake Iro Revealed by Species-based Indicators

The Proximate of Natural Foods Gracilaria lichenoides and Ulva fasciata for Abalone Haliotis squamata Culture

Growth Patterns and Condition Factor of Hepsetus odoe (Bloch, 1794) Captured in Eleyele Lake, Southwest Nigeria

Histopathological Study in Stomach and Intestine of Anabas testudineus (Bloch, 1792) under Almix Exposure

Marketing and Livelihood Contribution of Fishermen in Lake Tana, North Western Part of Ethiopia

Review on Major Parasitic Crustacean in Fish

The Beneficial Reuse of Hypersaline Waste Water from Desalination Plants to Treat Harmful Algal Blooms

To Reduce Mortality of Fry Fish (Oncorhynchus mykiss) Caused with Viral Infection (IPNV and VHSV) by Water Treatment with Chloramin-T as Disinfectant

Constraints Limiting the Effective Utilization of Low-Cost Fish Processing Technologies among Women in Selected Fishing Communities of Lagos State, Nigeria

Fisheries of Jemma and Wonchit Rivers: As a Means of Livelihood Diversification and its Challenges in North Shewa Zone, Ethiopia

Growth Performance, Feed Utilization and Body Composition of Clarias gariepinus (Burchell 1822) Fed Marine Fish Viscera-based-diet in Earthen Ponds

Isolation and Identification of Edwardsiella tarda from Lake Zeway and Langano, Southern Oromia, Ethiopia

Reproduction of Mugil cephalus (Percoidei: Mugilidae) off the Central Mexican Pacific Coast

The Production of Catfish and Vegetables in an Aquaponic System

Zebrafish in the Wild: Microhabitat Use by Zebrafish Danio rerio (Hamilton, 1822) from Karala River of Jalpaiguri District, Northern Bengal, India