Some parasites are known to bioaccumulate some environmental pollutants within their host. We hypothesized that these may be beneficial for hosts in polluted environments. experimentally increased long-term (five weeks) exposure polycyclic aromatic hydrocarbons (PAHs, three levels: 0.1X, 1X, 10X exposure) European chubs (Squalius cephalus) were naturally infected or uninfected with acanthocepha...

Fish protection at hydropower plants is important for the sustainability of hosting ecosystems and acceptance hydropower. On their way downstream, fish are exposed to various related negative effects, ranging from a delay in downstream movement being injured or killed by turbine. Understanding behavior close proximity devices essential order establish efficient facilities. In this study, physic...

khorasan-e-razavi province in the northeast of iran possesses varied climatic and geographical conditions that lead to a rich biodiversity. an investigation on the status of the fish fauna was carried out from march to october 2013. a total of 401 specimens was collected and identified, from 30 localities among seven counties in this province. sampling was performed using hand net, cast net and...

In the context of River Rhône restoration programme, objective this study was to assess dispersal and population connectivity European chub, Squalius cephalus (Linnaeus, 1758) in a section natural, free-flowing part lower Rhône. The elemental water signatures for Sr:Ca Ba:Ca were measured at seven stations within river section, including its tributaries backwaters, determine whether they could ...

Bu çalışmada bir curustacea parazit türü olan Argulus foliaceus olgusu Türkiye'de Kunduzlar Baraj Gölü'nden (Kırka-Eskişehir) yedi balık üzerinde incelenmiştir; Alburnus escherichii, Barbus plebejus, Capoeta tinca, Carassius gibelio, Chondrostoma nasus, Cyprinus carpio, Squalius cephalus. Parazit, nasus hariç tüm konakçı türlerinin solungaçlarında, yüzgeçlerinde ve derisinde bulunmuştur. Enfekt...

Bar racks are commonly installed to divert fish away from water intakes, such as those at hydropower stations or other abstraction points. In temperate regions their effectiveness has predominantly been assessed in relation diadromous species, salmon and eel. This study compared the efficacy of horizontally vertically oriented (5 mm diameter 10 spacing) guide downstream moving groups five chub ...