fishery sampling Articles
-
Threshold‐dependent sample sizes for selenium assessment with stream fish tissue
Natural resource managers are developing assessments of selenium (Se) contamination in freshwater ecosystems based on fish tissue concentrations. We evaluated the effects of sample size (i.e., number of fish per site) on the probability of correctly detecting mean whole‐body Se values above a range of potential management thresholds. We modeled Se concentrations as gamma distributions with ...
-
Biomagnification and tissue distribution of perfluoroalkyl substances (PFASs) in market‐size rainbow trout (Oncorhynchus mykiss)
The biomagnification potential as well as the substance and tissue specific distribution of perfluoroalkyl substances (PFASs) in market‐size rainbow trout (Oncorhynchus mykiss) was investigated. Rainbow trout with an average body weight of 314 ± 21 g were exposed to perfluorobutane sulfonate (PFBS), perfluorohexane sulfonate (PFHxS), perfluorooctane sulfonate (PFOS), perfluorooctanoic acid ...
-
Incidence of Aeromonas species isolated from water and fish sources of Lake Manzala in Egypt
Lake Manzala situated in the east of Nile Delta, between the Damietta branch of Nile River and Suez Canal. The lake receives pollution from different sources, which make the lake polluted and eutrophicated. Samples were taken from five sites of the lake. Faecal coliforms showed the highest counts 2.2× 10 3 cfu ml –1 and 4× 10 3 cfu ml –1 in water in El-Kapoty and El-Mataryia areas, ...
-
Mercury in the seafood and human exposure in coastal area of Guangdong Province, South China
Consumption of fish and aquatic products is considered to be the main pathway of human exposure to methylmercury (MeHg). To assess human health risk through seafood consumption in a coastal area of Guangdong Province, South China, a total of 518 seafood samples (including fish, shrimp, crabs, and mollusks) were collected from 11 coastal cities for total mercury (THg) analysis. The THg ...
-
Evaluating cumulative effects of anthropogenic inputs in Prince Edward Island estuaries using the mummichog (Fundulus heteroclitus)
Estuarine eutrophication as a result of agricultural land use including the use of chemical fertilizers is increasing worldwide. Prince Edward Island, Canada has very high agricultural intensity by international standards with approximately 44% of the land area under production, and some watersheds in excess of 75% agricultural land‐use. The type of agriculture is also intensive with primarily ...
-
Incidence of Aeromonas species isolated from water and fish sources of Lake Manzala in Egypt
Lake Manzala situated in the east of Nile Delta, between the Damietta branch of Nile River and Suez Canal. The lake receives pollution from different sources, which make the lake polluted and eutrophicated. Samples were taken from five sites of the lake. Faecal coliforms showed the highest counts 2.2 × 10³ cfu ml−1 and 4 × 10³ cfu ml−1 in water in El-Kapoty and El-Mataryia areas, respectively. ...
-
Organochlorine pesticide and PCB residues in pharmaceutical, industrial and food grade fish oils
Oils rendered from whole fish and from fish offal are an important primary dietary item in many areas of the world. In addition, fish oils are used extensively in the food industry as raw materials and ingredients. An extensive specialist market also exists for fish oils in dietary supplements. Traditionally, benefits have been conferred by their high vitamin D content in the prevention and cure ...
-
Drying Sardine Fishes by Microwave Drying Machine
1. Why Fresh Sardine Fishes Need to Be Dried by Microwave Drying Machine? Sardine fish is an important source of high-quality protein required in human diet, but it has not yet been fully utilized, due to the limited storage period and, sometimes, their strong fishy odor. Fresh sardine fish contains up to 80% of water, and it is a highly perishable material and having a short storage life. ...
-
Seasonal exposure of fish to neurotoxic pesticides in an intensive agricultural catchment, Uma‐oya, Sri Lanka: Linking contamination and acetylcholinesterase inhibition
The annual cultivation pattern in the Uma‐oya catchment in Sri Lanka is characterized by Yala and Maha rainfall periods and associated cropping. Two cultivation seasons were compared for pesticide residues: base flow, field drainage, and the runoff and supplementary sediment data for three sites in the catchment. Organophosphate and N‐methyl carbamate pesticide analysis confirmed a higher ...
-
Choose the Suitable Fish Feed Pellet
The cost of fish feed accounts for a large proportion of the coast produced by fish farmers. Feed pellets are widely used in fish farming. Choosing only the right quality fish feed particles can improve feed utilization, growth rate and immune system, and prevent disease. Therefore, fish farmers must learn how to choose the right fish feed pellets. First, the nutrition of fish feed. The basic ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you