In several water-breathing fish species, beta-adrenergic receptor stimulation by noradrenaline leads to a decrease in plasma free fatty acid (FFA) levels, as opposed to an increase in air-breathing mammals. We hypothesised that this change in adrenergic control is related to the mode of breathing. Therefore, cannulated air-breathing African catfish were infused for 90 min with noradrenaline or ...

AIM The efficacy of dietary inclusion of various parts of mangosteen (Garcinia mangostana L.) extract on growth and hematological parameters of African catfish (Clarias gariepinus) fingerlings were investigated. MATERIAL AND METHODS Ninety six fingerlings were randomly distributed into each of ten 20L plastic aquaria. Each treatment groups consists of three replicates. Four experimental diets...

This study was conducted to determine ichthyofauna of the Büyük Karaçay stream of the River Orontes drainage in Turkey (eastern Mediterranaen basin). As the result of examination of the 911 individuals collected between June 2012 and May 2013, eight fish species belonging to five families have been recorded. Of these, African catfish Clarias gariepinus (Burchell, 1822), yellow barbel Carasobarb...

Water, soil sediment and seafood [crab (Sudananautes africanus africanus), lobster (Palaemon paucidens), African catfish (Clarias gariepinus) and African catfish (Synodontis schall)] samples collected from River Benue (Nigeria) were analysed for sodium (Na), potassium (K), copper (Cu), magnesium (Mg), iron (Fe), calcium (Ca), zinc (Zn), lead (Pb), cadmium (Cd), arsenic (As), selenium (Se), chro...

This study examines the potential threats posed by contaminated African catfish (Clarias gariepinus) by evaluating the biochemical and physiological changes in various tissues, especially the blood, of consumers. African Catfish (Clarias gariepinus) were cultured in water contaminated with phthalate, benzene, and cyclohexane (10μg/ml) respectively over a period of 65 days. They were thereafter ...

The effects of cadmium alone and that plus aqueous extract the calyx Hibiscus sabdariffa Linn on organ gravimetry lipid profile African catfish (Clarias gariepinus) have been examined. treatments did not alter brain-, gill- liver- body weight ratios when compared to extract- free group, control. Relative control brain gill homogenates‘ total- LDL-cholesterol concentrations were significantly (P...

The purpose of this work was to investigate the circadian melatonin system in two tropical teleost species characterised by different behavioural habits, Nile tilapia (diurnal) and African catfish (nocturnal). To do so, fish were subjected to either a control photoperiod (12L:12D), continuous light (LL) or darkness (DD) or a 6L:6D photoperiod. Under 12L:12D, plasma melatonin levels were typical...

The gonadotropin-releasing hormone receptor (GnRH-R) of the African catfish couples to phospholipase C and belongs to the large family of G protein-coupled receptors. We recently demonstrated that removal of the carboxyl-terminal tail (S331-Q379) from the catfish GnRH-R results in a loss of agonist binding; the current study sought to define more precisely the role of this region in receptor fu...