Cumulative impact of effluents on plankton dynamics in Awba Reservoir, Ibadan 

1 - 15

G.A. AKIN-ORIOLA & C.Y. JEJE (Nigeria).

Abstract

Acute toxicity of refined oil on the catfish, Clarias gariepinus (Teugels, 1984) (Pisces: Clariidae) 

17 - 26

O. KORI-SIAKPERE & E.E. AKIRI (Nigeria)

Abstract

Correlation of some environmental variables with adaptive net-spinning strategies in stream larval Hydropsychids (Trichoptera) in Garhwal Himalaya (Short Communication) 

27 - 30

N. KUMAR & A.K. DOBRIYAL (India). 

Abstract

Invertebrate fauna associated with water hyacinth (Eichhornia crassipes) in Benin River, southern Nigeria 

31 - 40

J.K. KELEMU, A.B.M. EGBORGE & P.A.EKOKOTU (Nigeria).

Abstract

Helminth parasites of some tropical freshwater fish from Osse River in Benin, southern Nigeria 

41 - 48

C.E. OKAKA & J.E. AKHIGBE (Nigeria).

Abstract

Temperature, latency and incubation time of Clarias gariepinus, Heterobranchus longifilis and their hybrids 

49 - 54

O.J. ABOLAGBA (Nigeria)

Abstract

Digestive enzymes in the alimentary canal of Clarias anguillaris (Pisces: Clariidae) 

55 - 63

O. KORI-SIAKPERE (Nigeria).

Abstract