Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae)

Adedire, C.O. and Aiyegbeni, M.L. and Fagbenro, O.A. (2001) Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae). In: 14th Annual Conference of the Fisheries Society of Nigeria (FISON) , 19-23 January 1998 ,Ibadan, Nigeria, pp. 47-53.

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Abstract

Analyses of stomach contents of 330 Malapterurus electricus (standard length, 10.1-30.5 cm) in Mahin Lagoon (southwestern Nigeria) established it as a bottom feeder. There was a preponderance of insects accounting for >80% occurrence and >25% of total volume in stomachs of specimens, suggesting a stenophagous predatory habit. Qualitative and quantitative assays of digestive enzymes in the different regions of the gut (oesophagus, stomach, duodenum, ileum, rectum) were investigated. Carbohydrases (amylase, maltase), chitinase, proteases (pepsin, chymotrypsin, trypsin) and lipases were detected in different gut regions with different activity. The pattern of distribution and relative activity of the enzymes correlated with the predatory diet

Item Type: Conference or Workshop Item
Title: Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae)
Personal Creator/Author:
CreatorsEmail
Adedire, C.O.
Aiyegbeni, M.L.
Fagbenro, O.A.
Page Range: pp. 47-53
Date: 2001
Event Title: 14th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: Ibadan, Nigeria
Event Dates: 19-23 January 1998
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria, Lagoon Mahin; enzymatic activity; feeding behaviour; freshwater fish; stomach content; Malapterurus electricus
Subjects: Fisheries
Biology
Chemistry
Item ID: 3656
Depositing User: Ms Maria Kalentsits
Date Deposited: 11 Jul 2010 09:54
Last Modified: 29 Sep 2011 17:00
URI: http://aquaticcommons.org/id/eprint/3656

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