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Analysis of Food Items and Diet Preference in the Stomach of Synodontis obesus (Boulenger, 1898: Siluriformes, Mochokidae) in the Lower Cross River, Nigeria

John Etitigwun Ukpatu, Idopiseabasi Ekpe Asuquo

Journal of Advances in Biology & Biotechnology · pp. 22–32 · Published 15 May 2023

10.9734/jabb/2023/v26i3625

Abstract

Analysis of stomach contents of Synodontis obesus (BOULENGER, 1898: SILURIFORMES, MOCHOKIDAE) in the Lower Cross River, Nigeria was carried out with standard methods to assess the food items and diet preference of the S. obesus. A total of 160 individuals of S. obesus (Mochokidae) were collected from October 2022 - January, 2023 at Akan Obio Uraun fishing port in Itu Local Government Area, Lower Cross River, Nigeria from local fishers and used for the study. Analysis of the fullness of stomach showed that 84.4% had food contents while 15.60% were empty stomachs. Samples with one quarter (25%) stomach fullness had the highest value of 28.13% while samples with 100% stomach fullness (18.75%) were more than those with half (50%) stomach fullness (17.52%). Twelve food items were found in the digestive tubes of the species, indicating that the fish has a high level of food selectivity and rich nutrition regime. The percentage frequency of occurrence of the food items with respect to whole sample indicated that plants part accounted for 36.98 %, animal items 21.93%, and palm fruits 16.05%, detritus 9.49%, sand grains 7.30%, insect /insect appendages 6.80%, and unidentified items 1.45 %. The wider food spectrum exhibited by the species revealed trophic flexibility. Food items increased as the fish grows in size but declined at old age indicating transitional diet shift as the fish grows bigger. The fish species is omnivore, feeding on a wide variety of food items including detritus. The results of this study are useful in determining the relationships between food availability, diet favorite and growth of the species in freshwater ecosystem.

Synodonthis obesus Lower Cross river diet preference stomach fullness trophic flexibility

References (17)

  1. 1 Fisheries ecology of floodplain rivers [DOI]
  2. 2 Fish and fisheries of Northern Nigeria
  3. 3 Diet composition of fish species from the southern continental shelf of Colombia
  4. 4 A comparative study of the food and feeding habits of Chrysichthys nigrodigitatus and Brycinus nurse in a tropical river
  5. 5 TROPHIC ECOLOGY OF COMMERCIALLY IMPORTANT FISHES IN THE CROSS RIVER, NIGERIA
  6. 6 The dietary habits of the upside-down catfish, Synodontis membranaceus (Osteichthyes: Mochokidae) in Jebba lake, Nigeria [DOI]
  7. 7 FOOD AND FEEDING HABITS OF Synodontis resupinatus (BOULENGER, 1904) AT IDAH AREA OF RIVER NIGER, KOGI STATE, NIGERIA
  8. 8 Review of Food and Feeding Habits of Some Synodontis Fishes in African Freshwaters [DOI]
  9. 9 Species Richness and Diversity of Ichthyofaunal communities of the Lower Cross River floodplain, Nigeria
  10. 10 The Food and Feeding Habits of Fishes of a Coastal Nigeria River [DOI]
  11. 11 Animal Life in Fresh Water: A Guide to Fresh-Water Invertebrates
  12. 12 The Influence of Size, Sex and Season on the Feeding Regime of Synodontis membranaceus (Osteichthyes: Mochokidae) in Jebba Lake, Nigeria [DOI]
  13. 13 Diet of synodontis victoriae (mochokidae) from Kunya beach lake Victoria, Kenya
  14. 14 TROPHIC SPECTRA AND RELATIONSHIP OF FISH SPECIES ASSEMBLAGES IN QUA IBOE RIVER, NIGER DELTA, NIGERIA
  15. 15 TROPHIC ECOLOGY, GROWTH AND POPULATION DYNAMICS OF Synodontis clarias (PISCES: SILURIFORMES: MOCHOKIDAE) (LIN: 1758) IN THE CROSS RIVER, NIGERIA
  16. 16 Diversity and abundance of Synodontis (Cuvier, 1816) species in the lower river Benue, Makurdi, Benue state, Nigeria
  17. 17 International Journal of Fisheries and Aquatic Research [DOI]

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