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Fish Larvae Articles & Analysis
17 articles found
Fish Farming Ponds: Constructing large fish farming ponds for raising various species of fish, such as tilapia, salmon, catfish, or shrimp. ...
Emlyn Davies and SINTEF Ocean for sending us thse amazing photographs of a LISST-100 in action in a sensor system used for mapping fish eggs, larvae and zooplankton. Located in Norway, SINTEF Ocean conducts research and innovation related to ocean space for national and international industries. ...
We believe the future of aquaculture nutrition, disease management, and environmental treatment is biological. At QB Labs, we’re constantly looking at the effects of various microorganisms to replace antibiotics, augment natural fish/shrimp biological processes, and improve environmental impacts of commercial aquaculture. While educating customers on our products, we’re often asked ...
Sediment can harm aquatic life by smothering the benthic ecosystem, clogging fish gills, and harming the development of fish eggs and larvae. Sediment can also carry with it other pollutants, many of which sorb to the sand and silt particles. ...
An important step in the assessment of these different decommissioning options is to look at the potential loss of fish production and habitat under the different alternatives. Using the large amount of information available on fish abundances at these structures, we have created a model to estimate the standing stock of fishes and production ...
Fry of the marine fish Rachycentron canadum (cobia) and larvae of the estuarine shrimp Litopenaeus vannamei (whiteleg shrimp) were exposed to a copper gradient which ranged from 0.20 to 1.80 mg Cu/L for the experiments with cobia and from 0.10 to 1.0 mg Cu/L for the experiments with whiteleg shrimp. ...
An alga species (Raphidocelis subcapitata), a cladoceran species (Chydorus sphaericus) and a freshwater fish larva (Danio rerio), representing organisms of different trophic levels, were exposed to colloids of the polyvinylpyrrolidone‐coated AgNPs in the presence and absence of HS. ...
They may also export nutrients, in the form of dissolved and particulate organic carbon, and living biomass, such as planktonic larvae and maturing fish and invertebrates. Species of interest to the fisheries sector are found at all levels of the food chain, with detritivores such as mangrove crabs, prawns and mullet; filter feeding bivalves, planktivorous ...
This mechanism is also active in aquatic organisms such as mussels, fish and their larvae. Modulation of this resistance mechanism by chemical agents occurring in the environment could result in either higher or lower internal concentrations of toxic and/ or endogenous compounds in cells. ...
To detect hormonal disruption of thyroid and oestrogenic functions, fluorescent Xenopus laevis tadpoles and medaka (Oryzias latipes) fish larvae bearing genetic constructs integrating hormonal responsive elements were used for physiological screens for potential endocrine disruption in streams from an urban wastewater treatment plant. ...
The movement speed of male and female fish exposed for 1 to 120 dpf was significantly increased compared with control before and after tapping, whereas in the groups exposed for 1 to 20 and 21 to 120 dpf, only the males exhibited elevated swim speed before tapping. Residues of PFOS in F1 embryos derived from parental exposure for 1 to 120 and 21 to 120 dpf were significantly ...
In the present study, the authors quantitatively evaluated the relative contribution of nAg particles and Ag+ to the toxicity to three aquatic organisms of different trophic levels, including an algal species (Raphidocelis subcapitata), a cladoceran species (Chydorus sphaericus), and a freshwater fish larva (Danio rerio). A bare and a polyvinylpyrrolidone ...
The toxicity and genotoxicity of untreated raw (RWW) and treated wastewaters (TWW) samples from Vilnius wastewater treatment plant was assessed using fish (rainbow trout) at different stages of development. The survival of larvae and fish exposed to RWW in short-term and longterm tests reduced, whereas gill ventilation frequency, heart rate and ...
The high survival rate of cod eggs and larvae from 1978–1983 is explained by four factors. The primary explanation is that fishing pressure was reduced in the late 1970s. ...
The two trials were with eight different treatment combinations. Among various treatments, fish and Chironomid larvae contributed to some extent in increasing the available sediment phosphate content which in turn increased the soluble reactive phosphate (SRP) of overlying water. ...
C. guatucupa is one of the most important regional fishing resources although in the last 10 years landings have greatly decreased. The year class strength of fish as well as stock size and yield are determined during the early life stages. ...
Other marine organisms in the upper levels of the sea include the eggs and larvae of fish, which would certainly be susceptible to damage from raised levels of UV-B (Smith, 1989). ...