Fish Health Articles
-
Affects of Viral Disease in Shrimp Farming
In Shrimp Disease control, they are Six viruses were known to affect Penaeid shrimp, but there are more than 20 viruses were identified as having affected wild stocks and commercial production. The OIE now lists seven viral diseases of shrimp in the Aquatic Animal Health Code, which are considered to be transmissible and of significant socio-economic and/or public health importance. These ...
By Vinnbio
-
Bacterial disease of Shrimp
Rickettsial Infections This infection is not recorded yet from Indian waters, systemic rickettsial infections were reported from cultured P. monodon from Malaysia and Singapore. In P. monodon, the rickettsia occurred within large cytoplasmic vacuoles where it formed-microcolonies of 19 to 33 f.lm in diameter. In heavy infections, cells with rickettsial inclusions were widespread in mesodermally ...
By Vinnbio
-
Salmon lice and how to contain them
Over the past few years, the problem of parasitic lice spreading on farmed salmon has been increasing at an alarming rate. We are now seeing situations like last year where lice killed thousands of tonnes of farmed fish, caused skin lesions and secondary infections in millions more, and cost the Scottish industry alone around £300m in trying to control them. Here at Inciner8 we have been ...
-
Use of sea water and hydraulic conditions. Potential cause of Mortality by Metals and Hydrogen Sulfide in Recirculation Fisheries
The traditional conception in Chile of the toxic effect of metals on cultured fish tends to weigh heavily on incoming freshwater in open flow fish farms as the major responsible for mortality in early stages of development in salmon species. This approach is mainly based on two conditions that refer to freshwater quality in Chile, and to the dilutive effect of recirculation fish stocks when a ...
-
Modern Project on Establishment of Fish Feed Production Plant
Fish Feed Plant Background & Necessity Along with the development of aquaculture, aquafeed industry has also made a quite fast progress, especially in virtue of continue advancement of breeding technology, the culturing mode has turned into intensive cultivation from extensive fish farming, which provides vast space for fish feed production. In line with the FAO (Food and Agriculture ...
-
Common Fish Diseases and Caused Reasons
There are literally hundreds of afflictions that can effect the health of farm fish. The most common maladies seen in home aquaculture production are usually either bacterial, parasitic, or viral diseases in origin. Fungal infections are also sometimes seen, and occasionally physical ailments. Common Fish Diseases & Symptoms in Freshwater Cultured Fish 1. Bacterial Disease Bacterial ...
-
Prevent Fish Kill in the Spring
Pond Deicing Can Help Prevent Fish Kill Keeping the pond open will help keep oxygen in the water, attract water fowl and help prevent fish kills in the spring. The most common cause of fish kills is suffocation due to lack of dissolved oxygen. Most dissolved oxygen is produced by algae and aquatic plants through photosynthesis. A lesser but also important source of oxygen in water is diffusion ...
-
Common Causes of Fish Kills in Your Pond
What Killed My Fish? The first question everyone has when they notice fish floating in open water or washed up along the bank is: what killed my fish? The most common causes of fish kills are oxygen depletion, algal blooms (could deplete oxygen or be toxic), pesticide toxicity and disease. By far, the most common cause of fish kills is oxygen depletion in lakes or ponds. There are two general ...
-
CO2 Removal and Stripping Column Ventilation Rate at Bell Aquaculture
Monitoring and controlling CO2 level in Recirculating Aquaculture Systems (RAS) is crucial not only for fish health but it is used increasingly for efficient management. Under supervision of Steve Summerfelt, a joint project has studied costs savings with optimizing ventilation based on CO2 continuous monitoring. The CO2 probe used in that project came from ...
-
Development of an adaptive monitoring framework for long‐term programs: An example using indicators of fish health
Detecting unwanted changes associated with localized human activities in aquatic ecosystems requires defining the value of an indicator expected at a site in the absence of development. Ideally, adequate and comparable baseline data will be collected at an exposure location prior to that development, but this is rarely done. Instead, comparisons are made using various designs to overcome the ...
-
Benzoylurea pesticides used as veterinary medicines in aquaculture: Risks and developmental effects on non‐target crustaceans
Diflubenzuron and teflubenzuron are benzoylureas that are used in aquaculture to control sea lice. Flubenzurons have low toxicity to many marine species such as fish and algae, but by their nature are likely to have significant adverse effects on non‐target species such as crustaceans and amphipods. Although the exact mechanism of toxicity is not known, these compounds are thought to inhibit ...
-
Nets That Save Fish - Ocean bycatch isn’t inevitable — it’s a design challenge.
Six years ago, the Norwegian coast guard filmed a Scottish fishing vessel riding gray swells, dumping 5 metric tons of dead fish back into the North Sea. Over the European Union catch quota, and so unable to keep all the fish they’d caught, the fishermen had to ditch some. To the Norwegians, who aren’t part of the EU and hold a strict discards ban, the waste was shocking. When this ...
By Ensia
-
Fathead Minnow response to broad‐range exposure of β‐sitosterol concentrations during life cycle testing
β‐sitosterol concentration in pulp and paper mill effluents is typically greater than other phytosterols, and has been shown to cause a variety of effects in fish. We exposed Fathead Minnow (Pimephales promelas) to low (22 ± 0.93 µg/L), medium‐low (70 ± 2.1µg/L), medium‐high (237 ± 5.5 µg/L), and high (745 ± 16.2 µg/L) concentrations of β‐sitosterol; and a negative (water), positive (ethynyl ...
-
Dead pigs found in Huangpu River hit 2,800
The number of dead pigs found in Shanghai’s Huangpu River has increased to 2,800 after an additional 1,600 corpses were fished out. Labels pinned in the ears of the pigs for tracing purposes have indicated they come from the upper reaches of Jiaxing City in east China’s Zhejiang Province. Local media in the Jiaxing region has reported residents dumping dead pigs into the river since ...
-
Assessment of the health status of wild fish from the Wheatley Harbour Area of Concern, Ontario, Canada
The overall health and endocrine function of wild brown bullhead (Ameiurus nebulosus) and goldfish (Carassius auratus) from the Wheatley Harbour Area of Concern (Lake Erie, Ontario, Canada) was assessed using a suite of physiological and biochemical endpoints. Smaller gonads were detected in female brown bullhead and goldfish from Wheatley Harbour compared with Hillman Marsh (Ontario, Canada) ...
-
Aquaculture case study
Customer: USDA-ARS Catfish Genetics Research Unit,USA Casey C. Grimm from the Southern Regional Research Centre New Orleans, USA. This research was executed by Ph.D. Paul V. Zimba from the USDA-ARS Catfish Genetics Research Unit, USA and Casey C. Grimm from the Southern Regional Research Centre New Orleans, USA, utilizing the LG Sonic ultrasound technology in channel catfish production. An ...
By LG Sonic
-
Fish and ecosystem health as determined by parasite communities of lake whitefish (
Coregonus clupeaformis ) from Saskatchewan boreal lakesIn northern Canada, there is increasing concern about the potential negative impacts of industrial activities on wildlife and ecosystems. Therefore, a study was conducted on lake whitefish (Coregonus clupeaformis) from Montreal and Reindeer lakes, Saskatchewan, to assess fish health and condition, and ecosystem integrity of these northern lakes. In Montreal Lake, all fish were infected by ≥2 ...
-
Case study: Fish farm
OverviewKfar Ruppin is one of the leading fish farming coops in Israel. Recent restrictions on water consumption and discharge have led the coop to consider semi intensive closed loop fish ponds. The main objectives in closed loop fish farming applications are prevention of Ammonia and Nitrite accumulation, and removal of suspended solids. Usually, the investment in a closed water cycle system ...
-
Aquacultural biotechnology in Thailand: the case of the shrimp industry
For the past decade, Thailand has been the leading exporter of shrimp and shrimp products to the world market and the income generated contributes substantially to the Thai economy. There are more than one million people employed directly or indirectly by the industry. At present, there is forceful competition due to price differences among major shrimp growing countries and due to new ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you