The metal accumulation levels for muscle, skin, gill, liver and intestine tissues of some Cyprinidae species (Carassius carassius, Condrostoma nasus, Leuciscus cephalus and Alburnus alburnus) in Enne Dame Lake (Kütahya/Turkey), which is mostly fed by hot spring waters, were investigated. Analyses were performed for copper (Cu), zinc (Zn), manganese (Mn), iron (Fe), cobalt (Co), magnesium (Mg), nickel (Ni), chrome (Cr) and boron (B) using inductively coupled plasma-optic emission spectroscopy (ICP-OES), and cadmium (Cd) using atomic absorption spectrophotometer (AAS) utilizing microwave digestion techniques. The concentrations of the heavy metals found in the fish varied in the follow ing ranges: Cu: < DL-7.04, Zn: 6.96-357.25, Mn: < DL-20.70, Ni: < DL-6.21, Fe: 9.62-2500.33, Cr: < DL-1.74, Co: < DL-0.54, Cd: 0.01-0.27 and Mg: 197.44-904.90 mg/kg wet weight. While B had the second highest concentration in the water of the lake, it was not encountered in any tissue of the investigated species. In all tissues and the species, While the bioaccumulation factors (BAFs) of Mn, Zn, Fe and Cu were remarkably high, the BAFs of Mg, Cr, Co, and B were also fairly low or none. Although the heavy metal accumulation levels for the muscle were generally lower than other tissues, there were some exceptions. Cd level in the muscle of C. carassius was higher than the permissible limit stated by Turkish legislation, FAO and WHO. The mean metal amounts for all the investigated tissues and species are statistically compared and discussed in this study.

The paper presents a description of Paradiplozoon bingolensis sp. n. from the gills of Garra rufa Heckel, 1843 (Cyprinidae) collected from the Göynük Stream, a tributary of the Murat River, Turkey. This is the first diplozoid species to be described from G. rufa. P. bingolensis is distinguished from the other valid species in the genus by the combination of the morphology of the sclerites of its clamps and by the size of the central hooks. Even molecular characterization based on variability of the second internal transcribed spacer (ITS2) of the ribosomal DNA region provided additional support of separation of this new species from the valid ones. The sequences were compared with previously published ITS2 sequences of other diplozoid species. Subsequent analysis demonstrated the uniqueness of this new parasite species and revealed uncertainties in the current taxonomic division of the Diplozoidae that are commented in the text.

This study was carried out between May 2013 and December 2015 in the Göynük Stream (Bingöl) that is one of the most important tributaries of the Murat River. Considering the stream tributaries connected to the Göynük Stream, the samples were captured from five stations: Garip Village, Ilıcalar Creek, Derinçay, Taşlıçay and Kale. In this study, 1349 fish samples were recorded in a total of 21 taxa including 14 taxa belonging to Cyprinidae, 3 to Nemacheilidae, 1 to Cobitidae, 2 to Sisoridae, and 1 to Mastacembelidae. Therefore, Cyprinidae was the predominant family. 1057 (78%) samples from the 14 taxa of Cyprinidae and 292 (22%) samples from the remaining 7 taxa of other 4 families were reported at the end of the study. The most dominant species in this study were: Capoeta umbla, Capoeta trutta, and Squalius semae from Cyprinidae family. Garra rufa and Cyprinion macrostomum species, which are endemic to the Euphrates and Tigris basin and have an important place in the freshwater fish literature in the world, were particularly abundant in Ilıcalar Creek, a section of the Göynük Stream. The aim of this study was to determine the fish fauna of the Göynük Stream on which there are five irrigation pump stations and HES reservoirs.

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The present study was conducted to identify the parasitic infections of Piscicola geometra, on three different species of Cyprinidae in two reservoirs of the Euphrates-Tigris basin, Turkey. The investigation was carried out from May to November, 2013 for Dumlu creek and from September, 2014 to April, 2015 for Goynük stream. Fourteen parasites were recorded on seven of the 94 examined fish specimens. This study is to be the first record of P. geometra parasitizing on Capoeta capoeta, Alburnus mossulensis and Cyprinion macrostomum for freshwater fish parasite fauna.

Parasites belonging to Argulus genus, known as fish louse (Argulus foliaceus L.) significantly affect in negative way both in natural and farming environment. In this study, the pathogenic effect of fish louse temperature on fish depending on water was investigated. In this research to estimate the effects of several factors such as water temperature, gender of the fish and the infection of fish louse were studied through Poisson regression method. As fish species, Alburnus alburnus (bleak), Carassius carassius (crucian carp) and Carassius auratus (golden carp) were caught periodically, starting from May during the year, and the parasites were counted. The gender and metrical measures of the examined fish were categorized separately. The degrees of water temperature of the dam were measured. Results from Poisson regression analysis showed that fish louse has harmful effect on the mentioned fish, depending on the water temperature.

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