The ichthyological biodiversity of Polish lakes is poorly understood, even in not used for fishing and those under strict protection. With this mind, the aim study was to conduct a comprehensive survey several Wolin National Park (Poland). conducted Domysławskie Gardno anthropogenic Stara Kredownia reservoir. Each exercise using benthic nets over 12 h period. fish caught were measured weighed, ...

Due to the increasing resistance of aquaculture pathogens antibiotics, search for new approaches control infectious diseases is particular importance. A promising approach development probiotic preparations based on antagonist bacteria. The paper studied antagonistic activity Bacillus strains that are developing probiotics fish. were isolated from bottom sediments Don River in area Donskoy Fish...

background: diazinon is an organophosphate pesticide which is widely used in paddy fields located in northern parts of iran, though it is prohibited to be used in many countries. objectives: the purpose of the present study was to investigate sublethal effects of diazinon on blood parameters of common bream abramis brama. methods: in sublethal toxicity test, fish were exposed to diazinon concen...

One thousand three hundred seventy three fish specimens of eight different species from the vicinity of Kyiv, Ukraine, were examined for the presence of trypanosomes and 921 individuals were found to be infected. The prevalence of infection ranged from 24% in freshwater bream, Abramis brama (Linnaeus), to 100% in spined loach, Cobitis 'taenia' Linnaeus. The level of parasitaemia also varied sig...

Brominated flame retardants (BFRs) are widely used industrial chemicals, residues of which can be nowadays found in all environmental compartments. The widespread presence of BFRs in various environmental compartments and food chain is a consequence of both their broad application area and physico-chemical properties, such as resistance to degradation and high lipophilicity. Alike in the case o...

Question: How does sexual ornamentation relate to parasite infection, host immune response and somatic condition status in male fish? Hypotheses: Zahavi’s (1975) handicap hypothesis proposes that producing secondary sexual traits represents a considerable handicap for males. Additionally, Hamilton and Zuk (1982) proposed that the expression of secondary sexual traits reveals a genetic resistanc...