Piscivory in cyprinids (Cyprinidae) is extremely rare. Specifically, common bream (Abramis brama) and common carp (Cyprinus carpio) are zooplanktivorous fish in deep lentic waters. Nevertheless, we observed predation by these two cyprinids under natural conditions in the Vír Reservoir, Czech Republic. We conducted diet analysis for cyprinids caught by trawling and gillnets and the large amount ...

The rearing of fish fry in illuminated cages is one of the methods used before fish release into water bodies. The aim of the study was to investigate the peculiarities of infestation with Argulus foliaceus L. of the fry of pike Esox lucius (L.), pike-perch Sander lucioperca (L.), bream Abramis brama (L.), vimba Vimba vimba (L.) and peled Coregonus peled (Gmel.) reared in illuminated cages. The...

We experimentally followed the life cycle of Myxobolus parviformis sp. n., a myxozoan parasite from the gills of common bream Abramis brama L. Establishing the development of both stages (myxospore and actinospore) in 2 consecutive, full transmission trials, we were able to separate plasmodia of a common genotype from sympatric Myxobolus spp. occurring in naturally infected gill lamellae. There...

Rhabdovirus was isolated from wild common bream Abramis brama during a disease outbreak with high mortality in Northern Ireland during May 1998. Rhabdovirus was also isolated at the same time from healthy farmed rainbow Oncorhynchus mykiss and brown trout Salmo trutta on the same stretch of river and 11 mo later from healthy wild bream and roach Rutilus rutilus in the same river system. Experim...

In archived samples from the German environmental specimen bank (ESB) organotin compounds including tributyltin (TBT) and triphenyltin (TPT) as well as their potential degradation products were quantified. Muscles of bream (Abramis brama) sampled in the period 1993-2003 from the rivers Rhine, Elbe, Saale, Mulde, Saar, and from Lake Belau (period 1988-2003) were analyzed by gas chromatography/at...

LJUBOJEVIC, D., D. TRBOVIC, J. LUJIC, O. BJELIC-CABRILO, D. KOSTIC, N. NOVAKOV and M. CIRKOVIC, 2013. Fatty Acid Composition of Fishes from Inland Waters. Bulg. J. Agric. Sci., Supplement 1: 62–71 The paper presents a comparative analysis of proximate and fatty acid composition of seven fi sh species from the Danube River including asp (Aspius aspius), common bream (Abramis brama), common barbe...

An active preference for higher temperatures within a physiological optimum is beneficial animal movement. For example, ascending induce an increase in cyprinid fish metabolism and swimming ability. Spring upstream migrations driven by the search resources may be related to these increases. Conversely, downstream autumn follow decrease temperature. When are resources, food availability reproduc...

Bar racks at water intakes of hydropower plants serve mainly to protect the turbines from floating debris. Additionally, they can be utilized downstream migrating fish in order prevent a potentially harmful turbine passage. The Rack FishProtector consists common bar rack equipped with electrodes mounted on upstream side bars. application low voltage current creates an electric field which is ac...

Assessments of patterns animal movements are important for understanding their spatial ecology. Geostatistical models stable isotope (SI) landscapes (isoscapes) provide a complementary tool to telemetry assessing and predicting movements, but rarely applied riverine species. Often single-isotope gradients in freshwater environments insufficiently variable high isoscape resolution at relatively ...