Physiological and behavioural constraints hinder albino individuals. Albino animals are rare in the wild; this trait is associated with easy detection by predators, non-native or damaged environments, and exclusively aphotic environments in total darkness. The social aspect of albinism is reported only for human beings, and the effect is distinguishable in time and space when social benefits, a...

The main objectives of study were to determine the concentrations of As and other trace elements (Al, Co, Fe, Ni, Sn, Se) in the muscle, liver, and gills of pikeperch (Sander lucioperca), catfish (Silurus glanis), and pike (Esox lucius), and in the muscle of Prussian carp (Carassius gibelio) and freshwater bream (Abramis brama), to identify relationships between element concentrations and total...

According to their toxicity, toxic heavy metals such as arsenic, mercury, cadmium, copper, zinc, and lead are believed be the most harmful humans, fish, environment. Because levels rising due human activities endangering aquatic species people, current study sought ascertain level of in five catfish parts (skin, liver, muscles, gills, ovaries). In northern part Shatt Al-Arab, samples were colle...

The mechanisms of adaptation that allow the teleost Silurus glanis to maintain its resting oxygen consumption constant when the O2 partial pressure (Po2) m the inspired water (PiO2) varied between 40 and 3kPa were studied at 13 °C. Steadystate values of oxygen consumption, ventilatory and circulatory flow rates, Po2 in the inspired and expired water, PO2 and O2 concentration in the arterial and...

The fish intestinal microbiota is affected by dietary shifts or diet-related seasonal fluctuations making it highly variable and dynamic. It assists with the digestion and absorption of food that is a common, yet dynamic process. However, fundamental dynamics of microbial ecology associated with food digestion in intestine and stomach are poorly understood in fish. We selected the southern catf...

Information about the socioeconomic drivers of Silurus glanis anglers in the UK were collected using questionnaires from a cross section of mixed cyprinid fisheries to elucidate human dimensions in angling and non-native fisheries management. Respondents were predominantly male (95%), 30-40 years of age with <10 yr angling experience for S. glanis; most had received college rather than universi...