4 research outputs found
Food and feeding habits of Synodontis nigrita from the Osun River, SW Nigeria
An investigation was conducted into the food and feeding habits of Synodontis nigrita from the Osun River near Epe, Lagos, Nigeria. The food items in the stomach of the S. nigrita covered a wide spectrum, ranging from various types of plankton to invertebrates and plants. A seasonal variation was also noted in the stomach contents of S. nigrita over the period of investigation. The predominant food items found in the stomach were Polycystis spp., Closterium spp., Oedogonium spp., plant tissues, insect parts and detritus. This suggests that S. nigrita is an omnivore
Food and feeding habits of Synodontis nigrita from the Osun River, SW Nigeria
An investigation was conducted into the food and feeding habits of Synodontis nigrita from the Osun River near Epe, Lagos, Nigeria. The food items in the stomach of the S. nigrita covered a wide spectrum, ranging from various types of plankton to invertebrates and plants. A seasonal variation was also noted in the stomach contents of S. nigrita over the period of investigation. The predominant food items found in the stomach were Polycystis spp., Closterium spp., Oedogonium spp., plant tissues, insect parts and detritus. This suggests that S. nigrita is an omnivore.Feeding behaviour, Stomach content, Food consumption, Nigeria, Synodontis nigrita
Histopathology of the gill and liver tissues of the African catfish Clarias gariepinus exposed to lead
An investigation on the effect of the heavy metal, lead (Pb) on the
gill and liver of the African catfish Clarias gariepinus was
carried out in the laboratory. One hundred and sixty (160) fingerlings
of the fish were exposed to continuous exposure to sub-lethal
concentrations (0.006 mg/l and 0.008 mg/l) of lead for a period of
three weeks. The liver and gill of fish were removed every 9 days for
histological examination. The results showed that the degree of
distortion of the gills and liver was proportional to the exposure
periods and concentration of the metals was found to be dose and time
dependent