Tag Archives: fish

Fish migration: a simple mathematical description

Diadromous fishes migrate between rivers and seas, and are key drivers of surface water ecosystems and food webs. Analyzing migration of diadromous fishes is therefore a core for assessment of surface water systems from both biological and

North American tetras: Such abundant fishes, such a complex evolutionary history

Tetras of Central and North America are fishes that belong in genus Astyanax, family Characidae. They are among the most abundant and frequent freshwater fishes in tropical America. Although some authors consider all Astyanax in the region

How to characterize best the genetic content of small supernumerary marker chromosomes

An inborn genetic defect can be found prenatally or postnatally. The best known and most frequently observed reason for such developmental delay and/or mental retardation is Down-syndrome, also known as trisomy 21. I.e. besides the normally present

Chronic lymphocytic leukemia (CLL) diagnostics better to do in cultivated than native cells

Cancer is an age associated disease. In Western countries with people having longer life expectancies than e.g. 100 years ago, this means at present that 1-2% of those individuals are confronted with the diagnosis of leukemia during

Sub-Antarctic Fish – how do they do when things get warm?

Scientists are concerned about the fate of marine species, in particular fish, under future climate warming. Because fish body temperature varies as a consequence of variation in the ambient environmental temperature (they are “poikilotherms”), scientists expect that

Fish waste – a resource

The amount of farmed Atlantic salmon in Norway was 1.27 106  tons in 2014. This results in 0.34 106 tons of waste (residual raw material). In addition, even more waste is produced from pelagic catch, which is

Fish are exposed to hundreds of pharmaceuticals. How to identify drugs that pose the greatest aquatic risk?

After consumption, human and veterinary drugs or their breakdown products end up in streams and rivers via wastewater effluent discharges into water bodies. Since this is a continuous process, aquatic animals are chronically (low concentration, long-term) being

Does eating oily fish improve gestational and neonatal outcomes?

Fish is a source of long-chain polyunsaturated n-3 fatty acids (LCPUFA), and its consumption is associated with prolonged length of gestation,  decreased pre-term birth rates, increased birth weight. However, fish may contain a number of pollutants which

Sailfish: the fastest fish in the world?

The fascination for speed runs deep in humans: we are in awe of fast cars and the 100-meter race is the most popular event at the Olympics. Similarly, we are intrigued by fast animals, like the cheetah

Omega-3 long-chain polyunsaturated fatty acids and fish oil supplementation during pregnancy

The pregnancy is a time of increased risk for omega-3 deficiency as they are used for the baby’s brain and eye development both before and after birth. Data derived from observational studies have found that low intake

Metallothionein, oxidative stress and trace metals in gills of liver of fish species

Kuwait Bay is important area that is influenced by the local municipal and industrial discharges. Therefore, two types of local fish from were studies, yellow finned seabream which is pelagic fish swim between the surface and the