March 2012

Economic analysis of fish hatchery operations in Ogun State, Nigeria

  This paper examines the cost and returns, and the determinants of fish hatchery operations in agricultural extension zones of Ogun state. The simple random sampling method was used in selecting 120 fish hatchery operators out of 388 registered ones using multi-stage sampling techniques. The primary data were collected in 2010 production season with the aid of well-structured, validated and pre-tested...

Author(s): Olaoye Olalekan Jacob and Oke Abdulfatai Olubukola

March 2012

Bioactivity of venom extracted from the sea anemone Anthopleura asiatica (Cnidaria: Anthozoa): Toxicity and Histopathological studies

  The bioactivity of the venom from a locally available sea anemone, Anthopleura asiaticacollected from the Mumbai coast was studied. The crude venom from sixty sea anemones (Sixty numbers) was extracted in aqueous medium. The protein content of the crude venom was 4.3459±0.027 mg/ml. The crude venom was found to be lethal at 1ml when injected intra-peritoneal to kasuali strain male albino...

Author(s): Ramkumar S., Arun Sudhagar S. and Venkateshvaran K.

March 2012

Nitrite intoxication of Clarias gariepinus at different water temperatures

  Clarias gariepinus (Burchell, 1822) of mean weight 320±11.2 g and total length 60.0±1.0 cm were exposed to nitrite (0.2 mg/l NO2) for 48 h at 27 and 35°C in order to investigate the effects of nitrite poisoning at these water temperatures. The effects of nitrite exposure on fish was assessed on selected haematological and biochemical indicators of the blood. The test was performed in a...

Author(s): Ajani Funmilola and Adeyemo Olanike Kudirat