International Aquatic Research

http://link.springer.com/journal/40071

List of Papers (Total 171)

Alterations in histopathological features and brain acetylcholinesterase activity in stinging catfish Heteropneustes fossilis exposed to polluted river water

Responses of stinging catfish (Heteropneustes fossilis) to pollution were studied in three freshwater rivers, namely Buriganga, Turag, and Shitalakkhya (Dhaka, Bangladesh), which are potentially affected by anthropogenic pollution originating from industrial and sewage dumping. Partial parameters about water quality (temperature, dissolved oxygen, and pH) and seasonal plankton...

Evaluation of a canola protein concentrate as a replacement for fishmeal and poultry by-product meal in a commercial production diet for Atlantic salmon (Salmo salar)

Atlantic salmon (Salmo salar) is an important cultured carnivorous species that, in the past, has not tolerated high levels of most plant protein feed ingredients in their diet. In order to increase efficiency and production to meet global demand, new sources of protein must be incorporated into the aquafeeds. A 38-week feeding trial was conducted at the National Cold Water...

Effect of high pressure and heat treatments on black tiger shrimp (Penaeus monodon Fabricius) muscle protein

Application of high pressure, a minimal processing, has gained interest particularly in extending the shelf-life or modifying the texture of seafood, especially in shrimp. However, pressurization may render the products with different texture as compared with their fresh and heated counterparts. Therefore, the impact of high-pressure treatment (200, 400, 600, and 800 MPa for 20...

Differential induction of HSP-70 expression in response to IHHNV in white shrimp Litopenaeus vannamei naturally co-infected with IHHNV and IMNV

Brazil is becoming one of the main global producers of the shrimp Litopenaeus vannamei. Worldwide outbreaks of viral disease place this aquaculture industry at risk, causing episodic economical loss. The primary viruses for L. vannamei, particularly in northeastern Brazil, are the infectious hypodermal and hematopoietic necrosis virus (IHHNV) and the infectious myonecrosis virus...

In situ assessment of genotoxic and mutagenic potential of polluted river water in Channa punctatus and Mystus vittatus

River Gomti, a tributary of river Ganga in northern India, is being polluted due to indiscriminate disposal of domestic sewage and industrial wastes that contain genotoxic chemicals. The study was conducted to evaluate the genotoxic potential of polluted water of river Gomti in two fish species, namely Channa punctatus and Mystus vittatus. The fishes were exposed in situ in nylon...

Artificial pigmentation and flesh quality in red porgy (Pagrus pagrus)

Red porgy (Pagrus pagrus) is a highly valued species of increasing interest for the Mediterranean aquaculture, characterized by a natural red-pink skin coloration, which acquires a gray color under culture conditions. This study was carried out in order to define new diets to modify the pigmentation variability of the red porgy skin. Six thousand red porgy juveniles (29.21 ± 6.39...

Concomitant production of lipase, protease and enterocin by Enterococcus faecium NCIM5363 and Enterococcus durans NCIM5427 isolated from fish processing waste

Enterococci are widely distributed in the environment ranging from foods to humans and are gaining industrial importance due to their technological traits. In the present study, enterococci (Enterococcus faecium NCIM5363 (EF-63) and Enterococcus durans NCIM5427 (ED-27)) which are native to fish processing waste with an ability to produce lipase, protease and enterocin...

Subcellular localization of 241Am in structural components of submerged macrophyte of the River Yenisei Elodea canadensis

We studied the microdistribution of the artificial radionuclide 241Am in the components of Elodea canadensis - a submerged macrophyte of the Yenisei River. The alpha-track analysis showed that the microdistribution of 241Am within different components of the submerged plant E. canadensis was not uniform. 241Am distribution was found to be affected by the age of the leaf blades...

Effect of bovine and fish gelatin in combination with microbial transglutaminase on gel properties of threadfin bream surimi

Textural property of surimi products is a prime factor in determining the acceptability of consumer as well as market value. Gelatin is one of the most popular biopolymers widely used in food industry as gelling agent with the unique textural properties. Therefore, the addition of gelatin along with the use of protein cross-linkers could be a means to modify the texture of surimi...

Chronic effect after acute exposure to commercial petroleum fuels on physiological status of Nile tilapia, Oreochromis niloticus (L.)

This study was conducted to explore the effect of kerosene, gasoline, or diesel, on the health status of Nile tilapia, Oreochromis niloticus (L.). Healthy fish (49.5 ± 1.3 g) were exposed to 0.01% (v/v) CPFs in glass aquaria for 5 min and then returned to clean freshwater for 4 weeks. Signs of poisoning in intoxicated fish were air gulping, increased opercular movement, loss of...

Bacterial flora of polycultured common carp (Cyprinus carpio) and African catfish (Clarias gariepinus)

Quantitative and qualitative analyses of bacterial flora associated with pond water, gills, and intestine of polycultured healthy common carp (Cyprinus carpio) and African catfish (Clarias gariepinus) were carried out and identified to species level where possible. Total viable bacterial counts in the pond water ranged from 9.2 ± 5.5 × 103 to 6.6 ± 5.1 × 104 colony-forming units...

Purification and characterization of trypsin from the digestive system of carp Catla catla (Hamilton)

Trypsin was purified from the digestive system of carp Catla catla (Hamilton) by ammonium sulfate fractionation, diethylaminoethyl-cellulose column chromatography, and Benzamidine Sepharose 4 fast flow column affinity chromatography. Trypsin was purified 26.2-fold with an 11.1% yield. The purified enzyme was active between pH 7.0 and 9.8, and maximal activity of the enzyme was...

Effects of annual flow characteristics on the freshwater life history of Chinese sturgeon: concern inferred from the number of seaward migrating juveniles

Since 2003, the flow characteristics of the Yangtze River, currently the only river where the protected Chinese sturgeon, Acipenser sinensis, spawns and where the young grows to the 6 to 8 month juvenile stage, has been regulated by the operation of the Three Gorges Project. The number of seaward migrating juveniles captured (NSMJC) in the Yangtze estuary from 2002 to 2010 was...

Effect of pretreatments on chemical compositions of mince from Nile tilapia (Oreochromis niloticus) and fishy odor development in protein hydrolysate

Fish protein hydrolysates (FPH) have gained increasing attention as nutritious fish products. Lipid oxidation associated with fishy odor in FPH limits its utility. Thus, an appropriate pretreatment of fish mince prior to hydrolysis by lowering pro-oxidants and lipid substrates could tackle such a problem. Different pretreatments of Nile tilapia minces including (1) washing (W...

Effects of dietary protein levels and rearing density on growth performance and stress response of Nile tilapia, oreochromis niloticus (L.)

This study was based on a 3 × 2 factorial design with three levels of dietary protein (25%, 35%, or 45%) and two rearing densities (D 1 = 150 and D 2 = 300 fish/m3). In this study, Nile tilapia, Oreochromis niloticus (L.), (1.8 to 2.5 g) was distributed into the aquaria at a rate of 150 vs. 300 fish/m3. Fish of each density were fed on a diet containing 25%, 35%, or 45% crude...

Molecular mechanism regulating axoneme activation in marine fish: a review

In many marine fish species, the spermatozoa are immotile in the testis and seminal plasma, and motility is induced when they are released in the aqueous environment. It is well known that the extracellular factors (hyperosmolality or sperm-activating peptides), controlling sperm motility in marine fish, act on the axonemal apparatus through signal transduction across the plasma...

Biochemical properties of polyphenoloxidase from the cephalothorax of Pacific white shrimp (Litopenaeus vannamei)

Melanosis is a major problem associated with the quality loss of Pacific white shrimp. This is mediated by polyphenoloxidase (PPO), in which biochemical and molecular properties can be varied with species, molting period, etc. The better understanding of PPO characteristics should pave a way for lowering melanosis, thereby extending the shelf life of Pacific white shrimp during...

Optimization of UV treatment to induce haploid androgenesis in the stinging catfish, Heteropneustes fossilis

The optimum UV irradiation duration for the complete inactivation of Heteropneustes fossilis egg’s nucleus was developed. The unfertilized eggs were suspended in Hanks’ balanced salt solution and were irradiated with UV light from both the dorsal and the ventral side for different exposure times ranging from 20 to 200 s (2,500 to 25,000 ergs/mm2). Egg viability was assessed for...

Hemolymph osmotic, ionic status, and branchial Na+/K+-ATPase activity under varying environmental conditions in the intertidal grapsid crab, Gaetice depressusd

Osmo- and ionoregulatory abilities were examined in the intertidal grapsid crab, Gaetice depressus, transferred from normal seawater (30 ppt) to low (10 ppt) or high (50 ppt) salinities for 2 and 10 days, in addition to animals kept out of water for 2 days. The results of the hemolymph osmotic and ionic status indicate that G. depressus is able to adapt for more than 10 days in...

Gelling characteristics of surimi from yellow stripe trevally (Selaroides leptolepis)

Yellow stripe trevally (Selaroides leptolepis) is one of the abundant dark-fleshed fish species caught in Southern Thailand. However, the pelagic fish have high content of dark flesh associated with the high lipid and myoglobin contents contributing to the difficulties in making high-quality surimi. However, setting or heating at an appropriate temperature can improve the...