CONTENTS

O. M. UDOIDIONG AND R. P. KING, Ichthyofaunal Assemblages of some Nigerian Rainforest Streams 

Abstract

1

J. F. ALFRED-OCKIYA, Nutritional changes in Traditionally Preserved Shellfishes from the Niger-Delta, Nigeria 

Abstract

9

J. F. ALFRED-OCKIYA, The Length-Weight Relationships of Snake-Head (Channa channa) from the Freshwater Swamps of Niger Delta, Nigeria  

Abstract

12

L. A. D. DURU AND V. C. NWABISI, Determination of Cholecalciferol Levels in Cod Liver Oil using High Performance Liquid Chromatography with Mild Saponification and Reversed Phase Cleanup Procedure  

Abstract

15

K. V. ABSALOM AND O. OMENAIHE, Effects of Water Replacement rate on Growth and Survival of the Nile Tilapia Oreochromis niloticus Fry 

Abstract

19

F. O. NWADUKWE AND I. G. NAWA, Effect of Rearing Periods on the Production of Hybrid Catfish (Clarias gariepinus x Heterobranchus longiflis) Fingerlings 

Abstract

23

D. A. DAKUL, A. O. IYAGBA, P. F. AKUFONGWE AND E. OMOREGIE, Effects of 

Inorganic Fertilizers on the Mortality of Schistosoma mansoni Cercariae and their Infectivity in the Albino Mice 

Abstract

27

C. G. ORONSAYE AND C. E. OKAKA, Seasonal Distribution of some Cycl