International Aquatic Research

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

List of Papers (Total 171)

Effect of initial stocking size of the predatory African sharptooth catfish (Clarias gariepinus) on recruits, growth performance, survival and yield of mixed-sex Nile tilapia (Oreochromis niloticus) in concrete tank culture system

Prolific breeding and production of high percentage of recruits are main problems in mixed-sex Nile tilapia (Oreochromis niloticus) culture in earthen ponds. The current study assessed the efficiency of different sizes of African sharptooth catfish (Clarias gariepinus) in controlling recruitment in mixed-sex Nile tilapia cultured in tanks and its effect on growth performance...

High tolerance of Chaetomorpha sp. to salinity and water temperature enables survival and growth in stagnant waters of central Thailand

The effects of salinity and water temperature on growth and survival of Chaetomorpha sp., one of the green tidal filamentous algae, were investigated. Field surveys revealed that this alga was abundant throughout the year in stagnant coastal waters of central Thailand. Chaetomorpha sp. was found in salinities of 3.4–90.0 and water temperatures of 20.1–40.9 °C. Chaetomorpha sp...

Efficacy of phytoremediation technology in decontaminating the toxic effluent released during recovery of metals from polymetallic sea nodules

Efficacy of phytoremediation using two macrophytes Azolla pinnata and Lemna minor in decontaminating the toxic effluent released during recovery of metals from polymetallic sea nodules was analysed by applying fish bioassay. The economically important fish, L. rohita, was exposed to both, the Azolla-phytoremediated effluent (APE) and Lemna-phytoremediated effluent (LPE) for...

Preliminary assessment of the Gut weed Ulva intestinalis as food for herbivorous fish

A set of feeding trials was carried out to assess the potential use of gut weed (GW) Ulva intestinalis as a direct food to replace commercial feed (CF) in an alternative approach for feeding Spotted scat (Scatophagus argus), Red tilapia (Oreochromis niloticus), and Giant gourami (Osphronemus goramy) juveniles for 60, 45, and 56 days, respectively. Four feeding regimes were...

Optimization of enzymatic hydrolysis of tilapia (Oreochromis Spp.) scale gelatine

Gelatine hydrolysate is a type of gelatine that undergoes a controlled hydrolysis treatment to further break apart the gelatine or collagen molecules. In this study, gelatine hydrolysate was produced from commercial tilapia scale gelatine via controlled enzymatic hydrolysis. Commercial Alcalase 2.4 L, a protease enzyme was used to breakdown the peptide chains present in the...

Variations of structural protein sequences among geographical isolates of white spot syndrome virus

White spot syndrome virus (WSSV) is the causative agent of a disease that causes severe mortalities in cultured shrimp worldwide. The sequence of five structural genes of an Indian isolate of WSSV was compared with sequences from other WSSV isolates deposited in GenBank. Among the structural genes analyzed, the sequences of vp28 and vp19 had maximum divergence with nucleotide...

Hematological parameters of Colossoma macropomum naturally parasitized by Anacanthorus spathulatus (Monogenea: Dactylogiridae) in fish farm in the Peruvian Amazon

In the Peruvian Amazon, there is no information about hematological parameters of parasitized fish maintained in fish farms. In this study, the effects of parasitism by Anacanthorus spathulatus on hemoglobin (Hb), hematocrit (Ht), red blood cells (RBC), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), glucose...

Extraction, antioxidative, and antimicrobial activities of brown seaweed extracts, Turbinaria ornata and Sargassum polycystum, grown in Thailand

Total phenolic content and antioxidative and antimicrobial activities of methanolic and ethanolic extracts from brown seaweeds, Turbinaria ornata and Sargassum polycystum, were determined. Among all extracts, methanolic extract of T. ornata contained the highest total phenolic content (2.07 mg catechin/g dry seaweed) (p < 0.05) and exhibited the highest antioxidative activity as...

Exposure to agricultural pesticides impairs growth, feed utilization and energy budget in African Catfish Clarias gariepinus (Burchell, 1822) fingerlings

The African catfish Clarias gariepinus is a widespread species in the Beninese cotton basin. In this study, the impacts of exposure to agricultural pesticides endosulfan [Thionex 350 EC (emulsifiable concentrate)] and Tihan 175 O-TEQ (oil toxicity equivalent) on growth, feed utilization and energy budget of C. gariepinus were investigated. Fingerlings (1.58 ± 0.02 g) were exposed...

Examining muscles of Cirrhinus mrigala for biochemical parameters as a bio-indicator of water pollution by municipal and industrial effluents into River Ravi, Pakistan

We examined the muscles from replicated samples of Cirrhinus mrigala as a bio-indicator of water pollution following sewage and industrial discharges from the Lahore city into Ravi River of Pakistan. For this, C. mrigala was netted from three variably polluted downstream sites (B, C and D) and one less polluted upstream site (A). The fish was sampled during low (winter) and high...

Stocking density-dependent growth and survival of Asian red-tailed catfish (Hemibagrus wyckioides) fries: early nursing in cages

Asian red-tailed catfish (Hemibagrus wyckioides) were raised at five different stocking densities in cages (submerged and with a volume of 1 m3) suspended in a fish pond from July to August 2012. H. wyckioides fries (mean weight 0.8 ± 0.1 g) were stocked at densities of 25, 50, 100, 200, and 400 fish/m3. At the end of 56 days, the mean fish weights among the stocking densities of...

Is production of protease inhibitors from cyanobacteria nutrient dependent? Comparison of protease inhibitory activities in three species of Oscillatoria isolated from Central India

Protease inhibitors are produced by a large number of cyanobacterial genera and their motive and mode of production are largely unknown. The present study showcases a comparative study of three isolates: DL02, DL08 and DL018 of Oscillatoria species collected from Central India, which possessed the same degree of protease inhibitory activities during isolation. These strains were...

The Water quality of the Danube River and gravel pits in the Bratislava area (Slovakia)

The gravel pits are typical features of Bratislava. By their origin they are related to the river Danube. The water quality is determinated by various indicators, especially hydrochemical and microbiological ones. In the gravel pits water was determined for increase of chloride concentration and drop of sulphate concentration. Significant indicator of faecal contamination is the...

Fluctuating salinity levels and an increasing pollution gradient on fish community structure and trophic levels in a small creek in the Niger delta, Nigeria

Assessing the ecological status of rivers, creeks, and streams is a fundamental and increasingly important water management issue worldwide. This study examines the variations in fish community structure along an increasing pollution gradient in a small Niger Delta creek in Nigeria in both time and space. Salinity of the area fluctuated between fresh and mesohaline brackish...

Mass mortality event of the blood cockle, Anadara granosa, in aquaculture ground along Selangor coast, Peninsular Malaysia

A mass mortality event of blood cockles, Anadara granosa, occurred in aquaculture ground in Selangor in mid-February 2012. To identify factors contributing to this event, we estimated the changes in survival rate and population density of the blood cockles using data from field surveys carried out in late-January and mid-March, 2012. In addition, blood cockle samples were used...

Mercury and methyl mercury concentration in sediment, benthic, Barbus Grypus and pelagic, Barbus esocinus fish species, from Musa estuary, Iran

The concentrations of mercury (Hg) and methyl mercury (MeHg) in sediment and tissues of Barbus grypus and Barbus esocinus fish species from Musa estuary, north part of the Persian Gulf, were measured. The order of Hg and MeHg concentrations in the sediment and tissues of the fish species was as follows: liver > gill > muscle > sediment. In the tissues of two fish species, the Hg...

Hazardous effect of ZnS nanoparticles on the feeding behaviour, growth and maturation process of the Asian striped catfish, Mystus vittatus (Bloch, 1794)

The Asian striped catfish Mystus vittatus (Bloch) are exposed to ZnS nanoparticles of different concentrations and its impact on feeding behaviour, growth and maturity of the fish is studied. The study reveals the fact that under nanoparticle exposure, the feeding behaviour, growth and maturation stages depart from that of the controlled conditions. The growth is found to be...

Immunoadjuvant effect of garlic (Allium sativum)–mineral oil suspension on immunity and resistance to Aeromonas hydrophila infection in rohu, Labeo rohita

The immunomodulatory effect of garlic–mineral oil as a modified adjuvant was investigated in rohu, Labeo rohita along with formalin-killed Aeromonas hydrophila. The garlic extract was not having any proteolytic effect on the tested antigen as marked in SDS-PAGE. The efficacy of graded levels of modified adjuvant formulation was assessed by measuring serum hemolysin and...

Continuous cultures of phytoplankton

The development of cultures of phytoplankton adapting throughout several days in an axenic, continuous-flow chemostat to yield a steady kinetic state of competing species is described mathematically. The adaptation of the growth rate to the chemostat environment inhibits integration of the equation of conservation of phytoplankton populations, though eventually when a steady...

Observations on the increase of wild gilthead seabream, Sparus aurata abundance, in the eastern Adriatic Sea: problems and opportunities

The recent increase of the local population of gilthead seabream, Sparus aurata, in three areas along the southeastern Adriatic Sea: Malostonski Bay (Croatia and Bosnia and Herzegovina), Neretva Estuary (Croatia) and Boka Kotorska Bay (Montenegro) and its adverse effects on shellfish culture by preying on Mediterranean mussels, Mytilus galloprovincialis, and the European flat...

Diversity of denitrifying bacteria in the greenwater system of coastal aquaculture

Greenwater technology is based on integrating finfishes inside pens for zero water exchange system of shrimp aquaculture. Nitrogen transformation could be improved by rearing euryhaline finfishes like grey mullet, milkfish which have a broad diet and tolerate poor water quality. The abundance of four denitrifying functional genes coding for nitrate reductase (narG and napA...

Chemical composition and physical properties of salted shrimp paste (Kapi) produced in Thailand

Chemical composition and physical properties of 11 salted shrimp pastes (Kapi) obtained from various places of Thailand were determined. Based on proximate composition, protein constituted the major component (29.44–53.27 %, dry wt. basis). All samples contained 22.77–35.47 % NaCl with Aw of 0.695–0.774. Various formal nitrogen contents (11.96–22.87 mg N/g sample) were in...

Histological observation of doublesex-mab 3-related transcription factor 1 (DMRT1) localization in the adult testis of three-spot wrasse

Doublesex-mab 3-related transcription factor 1 (DMRT1) has been identified as the first conserved gene involved in the testicular differentiation of vertebrates. However, the precise role of DMRT1 in spermatogenesis has not been made clear. In this study, immunohistochemical method was used to observe DMRT1 protein localization in order to resolve cellular profile of DMRT1 in the...

Metabolic insights in Arctic charr (Salvelinus alpinus) fed with zygomycetes and fish meal diets as assessed in liver using nuclear magnetic resonance (NMR) spectroscopy

Fish meal is the major source of animal protein in feed for cultured salmonid fish, but its availability is limited and it must eventually be replaced by alternative protein-rich feed ingredients. Zygomycetes (Rhizopus oryzae) is a fungus with protein-rich biomass that could replace fish meal protein in fish feed. Using an 1H NMR spectroscopy approach, we studied the metabolic...