Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae)
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
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Format: | conference_item biblioteca |
Language: | English |
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2001
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Subjects: | Fisheries, Biology, Chemistry, Nigeria, Lagoon Mahin, enzymatic activity, feeding behaviour, freshwater fish, stomach content, Malapterurus electricus, |
Online Access: | http://hdl.handle.net/1834/21364 |
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dig-aquadocs-1834-213642021-06-28T02:53:27Z Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae) Adedire, C.O. Aiyegbeni, M.L. Fagbenro, O.A. Fisheries Biology Chemistry Nigeria Lagoon Mahin enzymatic activity feeding behaviour freshwater fish stomach content Malapterurus electricus 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 2021-06-24T15:54:23Z 2021-06-24T15:54:23Z 2001 conference_item http://hdl.handle.net/1834/21364 en http://fison.org.ng/ application/pdf application/pdf 47-53 http://aquaticcommons.org/id/eprint/3656 424 2011-09-29 17:00:16 3656 Fisheries Society of Nigeria |
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Fisheries Biology Chemistry Nigeria Lagoon Mahin enzymatic activity feeding behaviour freshwater fish stomach content Malapterurus electricus Fisheries Biology Chemistry Nigeria Lagoon Mahin enzymatic activity feeding behaviour freshwater fish stomach content Malapterurus electricus |
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Fisheries Biology Chemistry Nigeria Lagoon Mahin enzymatic activity feeding behaviour freshwater fish stomach content Malapterurus electricus Fisheries Biology Chemistry Nigeria Lagoon Mahin enzymatic activity feeding behaviour freshwater fish stomach content Malapterurus electricus Adedire, C.O. Aiyegbeni, M.L. Fagbenro, O.A. Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae) |
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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 |
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conference_item |
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Fisheries Biology Chemistry Nigeria Lagoon Mahin enzymatic activity feeding behaviour freshwater fish stomach content Malapterurus electricus |
author |
Adedire, C.O. Aiyegbeni, M.L. Fagbenro, O.A. |
author_facet |
Adedire, C.O. Aiyegbeni, M.L. Fagbenro, O.A. |
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Adedire, C.O. |
title |
Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae) |
title_short |
Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae) |
title_full |
Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae) |
title_fullStr |
Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae) |
title_full_unstemmed |
Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae) |
title_sort |
food composition and digestive enzymes in the gut of the african electric catfish malapterurus electricus (gmelin 1789) (malapteruridae) |
publishDate |
2001 |
url |
http://hdl.handle.net/1834/21364 |
work_keys_str_mv |
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