HATASO Journal Management System

Volume 6,Issue 2015, 2015

May-10-2021

Volume 6, Year 2015

Utilization of Treated Duckweed Meal (Lemna pausicostata) as Plant Protein Supplement in African Mud Catfish (Clarias gariepinus) Juvenile Diets

Surface Topography of the Anterior Adhesive Apparatus of the Gill Monogenean Parasite Diplectanum sp. diesing, 1858, with some Surface Criteria

Snails and Fish as Pollution Biomarkers in Lake Manzala and Laboratory A: Lake Manzala Snails

Physiological, hematological and biochemical parameters have been used as biomarkers for water quality in snail samples collected from Lake Manzala. The results showed significant increase in AST, ALT, and ALP in planorbis and Physa snail samples collected from Dakahlya site in Lake Manzala. Most of snails are collected from of Port-Said and Dakahlya sites showed significant increase in urea. On the other hand, alteration in creatinine values in samples from different lake sites was recorded. Significant increase of total protein level and total bilirubin was obtained in all samples. Most of snail samples showed significant decrease in hemocytes count. The oxidative enzymes (CAT, GGT and GST) recorded alteration in their activity. Regarding Histopathological observations, in the foot region of Biomphalaria snails collected from Port Said and Dakahlya governorates are the most affected. The head foot showed splitting in the longitudinal and oblique muscle fibers and increased empty spaces within muscle. Shrinkage, focal areas of necrosis, large fat vacuoles and enlargement were observed in the salivary gland. Snail’s ganglia showed enlargement of neurosecretory neurons, degeneration with large vacuoles and fibrosis. hepatopancreas became much more distorted with necrosis, atrophy, degeneration and fat vaculation especially in Port Said and Damietta samples. Also, hepatopancreatic acini filled with different developmental stages of S. mansonai cercariae were observed in Biomphalaria snails collected from Port Said. Severe degenerative changes were observed in most of gonad’s cells including ova and sperms especially in snails collected from Damietta. Also, Biomphalaria snails collected from Lake Mazala showed accumulation of heavy metals in the head foot tissues. In conclusion, the severe alteration and degeneration recorded in the physiological and hematological parameters and also histopathological observations are clear evidence for the pollution of the water from which these snails were collected

Present Yield Status, Percentage Composition and Seasonal Abundance of Shark in Two Geographically Important Zones of Bangladesh

A Review of Epigenetic Imprints in Aquatic Animals

Influence of Stocking Density on Growth and Survival of Post Fry of the African Mud Catfish, Clarias gariepinus

Research of Ascocotyle (Phagicola) longa in Heat Treated Fillets of Mullet (Mugil platanus)

Biological Phosphorus Harvesting for Multiple Uses: A New Scientific Vision

Mass Propagation of Danio aequippinatus, an Ornamental Fish of North Eastern India

Fish Species Composition, Distribution and Abundance in Shadegan Wetland

Effect of Daucus carota and Beta vulgaris on Color of Anabus testudineus

Biochemical and PCR Assay for Detection of Pathogenic Bacteria at Shrimp and Shrimp Farms in Bangladesh

The study was conducted to detect faecal coliforms and pathogenic bacteria in shrimp and shrimp farms. Although coliforms are widely distributed in the environment, but only a small percentage are pathogenic to humans. The presence of pathogenic bacteria in shrimp causes several waterborne infections in humans that are worldwide concerning issues. In order to better determination of the health risks that are associated with the exposure to pathogenic bacteria, a multiplex PCR system was used for the rapid detection of pathogenic Aeromonas sp., Clostradium sp., Listeria sp., Salmonella sp., Shigella sp., Vibrio sp. and Staphylococcus sp. in the water, sediment and shrimp. The target genes were chosen for this investigation included: Aer gene for Aeromonas sp., hilA gene for Salmonella sp., virA gene for Vibrio sp., Sec gene for Staphylococcus aureus, neurotoxin gene type A, B, E, F for Clostridium botulinum, internalin gene for Listera sp. andipaH gene for Shigella sp. Seven pairs of specific primers were used to amplify internal fragments of these genes by PCR to generate PCR products that could be analyzed and confirmed with relative ease by gel electrophoresis. The presence of Aeromona and Vibrio sp. were found in the water, sediment as well as in the shrimp that were dominant among other bacteria species. On the other hand, Salmonella and Clostridium group was found in the sediment of one sample but there is no evidence of Listeria, Staphylococcus and Shigella group in the farms. All of the samples contained relatively large number (1100 to ≥2400 cfu/g) of coliform bacteria. The unhygienic condition and polluted water source could be the major reasons for the occurrence of these types of pathogenic bacteria in the shrimp farms in this area. The result revealed that the PCRbased rapid detection system described in this study is a powerful method for routine monitoring and risk assessment of water quality in the shrimp farms and could be an effective tool for disease studies in our shrimp sector.

Food and Feeding Habits of Cyprinus carpio Var. communis: A Reason that Decline Schizothoracine Fish Production from Dal Lake of Kashmir Valley

Controlling Chaos in a Food Chain Model through Threshold Harvesting

Sprostoniella teria Sp. Nov. (Monogenea: Capsalidae Baird, 1853: Trochopodinae) Parasite of Platax teira, from Iraqi Marine Water, Arab Gulf

Evaluation of Maggot Meal (Muscadomestica) and Single Cell Protein (Mushroom) in the Diet of Clarias gariepinus Fingerlings (Burchell, 1822)

Post-harvesting and Major Related Problems of Fish Production

Quantitative Analyses of Parasite Load in the Cardinal Tetra (Paracherodon axelrodii), along the Period of Capture and Storage

Fishing Methods and their Implications for a Sustainable Environment

Spatial and Temporal Variability of Phytoplankton Assemblages and Physico-Chemical Characterization in Three Similar Dams

Morphological and Molecular Characterization of Diplozoon kashmirensis; D. aegyptensis and D. guptai Collected from Fishes of Kashmir ValleyIndia

Importance of Transgenic Fish to Global Aquaculture: A Review

Polysaccharides in Aquatic Disease Management

Procedure for Maturation and Spawning of Imported shrimp Litopenaeus vannamei in Commercial Hatchery, South East Coast of India

Changes in Physico-chemical Parameters at different Sites of Manasbal Lake of Kashmir, India

Effect of Testosterone-induced Sex Reversal on the Sex Ratio, Growth Enhancement and Survival of Nile Tilapia (Oreochromis niloticus) Fed Coppens and Farm Produced Feed in a Semi Flow-through Culture System

The study aimed at determining the effect of testosterone-induced sex reversal on the sex ratio, growth enhancement and survival of Nile tilapia, Oreochromis niloticus fed two feed type (coppens and farm produced feed of 56% and 25% crude protein respectively) and reared intensively under controlled conditions in a semi flowthrough culture system in twelve fibre glass tanks. The present study also examine the effectiveness of water flowthrough culture system in controlling unwanted reproduction during culture of mixed sex O. niloticus. The experiment was designed as 4 treatments × 24 weeks factorial replicated thrice. The fry was treated with a steroid hormone, 17α-methyltestosterone and cultured for a period of 21 days to reverse the sex to male fishes. After completion of the trial period of 21 days, nursing of the experimental fry (mixed sex and sex reversed) was continued for further 24 weeks with the two feed type. The results of the study showed that the highest sex occurrence of 95% and 90% males was recorded in the sex reversed fishes fed Coppens (Treatment II) and Farm Produced Feed (Treatment IV) respectively. Survival rate was 100% among all the treatments. Treatment II had the highest/best mean body weight gain (19.97 g), daily weight gain (0.12 g) and highest final weight (50.11 g). The study clearly indicated that the inclusion of the steroid hormone, 17α-methyltestosterone in the diets significantly altered the sex ratio towards male and enhanced the growth performance and survival rate in the sex reversed group in Treatments II and IV (P<0.05) irrespective of the feed type and thus recommended for tilapia culture. In spite of the overall best performance recorded in 56% CP of the commercial diet (Coppens) fed the tilapias in Treatments I and II, which is outside the recommended levels for the growth of tilapia, a significant growth rate (P<0.05) was also observed in the tilapias fed Farm Produced Feed with 25% CP content and is also recommended. The inability of O. niloticus to reproduce during the 24 weeks of the culture period in this study is an indication that the semi flow-through culture system using fibre glass tanks is a successful reproduction control method for O. niloticus and thus should be adopted in the aquaculture industries

Length-weight Relationship, Body Morphometrics, and Condition Based on Sexual Stage in the Rusty Crayfish, Orconectes rusticus Girard, 1852 (Decapoda, Cambaridae) with Emphasis on Management Implications

Loose Shell Syndrome (LSS) in Litopenaeus vannamei grow-out Ponds and its Effect on Growth and Production

Studies on the Mangrove Macro Faunal Diversity and Assessment among Different Sites in Port Blair Bay, South Andaman Islands

Survey on Phytoplankton Biomass and Water Parameters in the Habitats of Invasive Tigers Shrimps (Penaeus Monodon) in Nigeria

A CYP19 Based Sex Determination and Monosex Production in Aquaculture Species Oreochromis niloticus L. and a Cyprinid Cyprinus carpio L.

Isotopic Differences between the Left and Right Side Otoliths of Flatfish Indicating Growth rather than Environment

Length–Weight Relationships of Twelve Fishes from the River Padma near Rajshahi City, Bangladesh

Fish Mycobateriosis: An Emerging Disease in Italy

Use of Plant Products as Candidate Fish Meal Substitutes: An Emerging Issue in Aquaculture Productions

Ornamental Fishery in Rio Negro (Amazon region), Brazil: Combining Social, Economic and Fishery Analyses

Population Dynamic and Stock Assesment of White Seabream Diplodus sargus (Linnaeus, 1758) in the Coast of North Siani

A Model Strategic Framework for Prioritization and Development of Inland Water Bodies under Fisheries and Aquaculture

A Short Review on Infectious Viruses in Cultural Shrimps (Penaeidae Family)