Fish personality traits, such as swimming activity, or personality related emergent behavioural properties, such as the degree of space use shown by an individual fish, should affect encounter rates between individual fish and fishing gear. Increased encounters should in turn drive vulnerability to capture by passively operated gears. However, empirical evidence documenting a relationship betwe...

Bacterial isolates from common carp (Cyprinus carpio L.) and rainbow trout (Oncorhynchus mykiss) were identified by the API 20E system (bioMérieux). Twenty one isolates were identified as Shewanella putrefaciens. These isolates were tested for selected biochemical and cultural characteristics. Pathogenicity of two isolates (Pt38 and K116) for freshwater fish was assayed. Biochemical characteris...

In this investigation, serum steroid hormones such as testosterone (T), 17β-estradiol (E2) and progesterone (P) in 12 female of the migratory population of Common carp (Cyprinus carpio) in southeast of Caspian Sea during a year from May 2011 to May 2012 were studied. The results of present study revealed that changes in levels of steroid hormones, (E2) and (T) were closely correlated to ovarian...

We examined how length of fish is related to mercury concentrations in muscle tissue of seven species of fish from Lake Meredith, Texas and determined how sex and growth rate are related to mercury concentration in walleye (Sander vitreus). Flathead catfish (Pylodictis olivaris), walleye and white bass (Morone chrysops) had the highest concentrations of mercury and channel catfish (Ictalurus pu...

Potomida semirugata, which belongs to the Unionidae family, require a host fish complete their life cycle. In this study, preference of species was investigated. Besides, mussel and hence attachment state larvae on were also Five different namely Cyprinus carpio, Oreochromis niloticus, Clarias gariepinus, Anguilla anguilla, Carasobarbus luteus used as candidates. five glass aquaria each contain...

Bifenthrin is used as insecticide in agriculture. Present manuscript deals with the poisonous outcome of bifenthrin on histology kidney fish Cyprinus carpio. Freshwater carpio was this experimental study. An aggregate 30 were arbitrarily separated into 3 gatherings A, B and C. Group A kept control while C treated exploratory. All glass aquaria at room temperature. During experiment, group (cont...

A species not identifiable with any of the about 23 Myxobolus species recorded from the common carp so far, was detected in the gills of one- and two-summer-old specimens of the common carp ((Cyprinus carpio L.) cultured in pond farms in Hungary. The strictly tissue-specific plasmodia of the parasite were located, surrounded by hyaline cartilage cells, in the chondrous substance of the terminal...

In carp exposed to pH 5.2 in fresh water, the Ca2+ influx from the water is reduced by 31% when compared to fish in water of neutral pH. At pH 5.2, the Ca2+ influx but not Na+ uptake is decreased by aluminum (Al). Al reduces Ca2+ influx dose-dependently: a maximum 55% reduction was observed after 1-2 h exposure to 200 micrograms.1(-1) (7.4 microM) Al. Branchial Ca2+ efflux is less sensitive to ...

Any alteration in fish physiology indicates the deterioration of water quality parameters, since fish are one of the biological indicators of water quality. The recent development of biomarkers based on the study of the response of organisms to toxic chemicals has provided essential tools for the implementation of environment contamination monitoring programmes (Korami et al., 2000). Toxicants ...