Main Article Content
Background and Objective: The feeding habit as well as the condition factor of Chrysichthys nigrodigitatus from lower river Benue was studied between July 2015 and September 2015.
Materials and Methods: The natural food of the fish in the Lower River Benue was studied from stomach contents of the fish. A total of 100 stomachs were randomly examined and analyzed using two methods; the frequency of occurrence and point methods. About 92 had food items while 8 were empty. Analysis of variance (ANOVA) was used to test for significant difference at 95% confidence limit in the food eaten by these species and also the degree of stomach fullness.
Results: Food items encountered using frequency of occurrence method include fish parts (47.62%), seeds (40.49%), sand/mud (30.09%), detritus (30.95%), digested food (29.76%), insect parts (27.38%), mollusk (25.00%) and algae (22.62%).
Conclusion: C. nigrodigitatus had a euryphagous food habits and based on condition factor the fish were in good health.
Unanam AE, Akpan AW. Analysis of the physico-chemical characteristics of some freshwater bodies in Essien Udim Local Government Area of Akwa Ibom State. In: Eyo AA proceedings of the 21st Annual Conference of the Fisheries Society of Nigeria (FISON), Calabar. 2006;301-312.
Ekanem SB. Some reproductive aspects of Chrysichthys nigrodigitatus (Lacepede) from Cross River Nigeria. Naga, ICLARM Quarterly. 2000;23(2):24-28.
James PU, Aniekan JO. Growth performance of silver grey catfish, Chrysichthys nigrodigitatus fingerlings fed salt rich diets in fresh water system. AACL Bioflux. 2017;10(1).
Fagbenro OA, Adedire CO, Ayotunde EO, Faminu EO. Heamatological profile, food composition and digestive enzymes assay in the gut of the African bony-tongue fish, Heterotis (Clupisudis) niloticus (Cuvier, 1829). Tropical Zoology. 2000;13:1-9.
Idodo-Umeh G. The feeding ecology of bagrid species in River Ase, Niger Delta, Southern Nigeria. Tropical Freshwater Biology. 2002;11:47-68.
Oronsaye CG, Nakpodia FA. A comparative study of the food and feeding habits of Chrysichthys nigrodigitatus and Brycinus nurse in a Tropical River. Pakistan Journal of Scientific and Industrial Research. 2005;49(2):118-121.
Offem BO, Akegbejo-Samsons Y, Omoniyi IT. Diet, size and reproductive biology of the silver catfish, Chrysichthys nigrodigitatus (Siluformes: Bagridae) in the Cross River, Nigeria. Rev. Biol. Trop. 2008;56(4):1785-1799. Available:http://doi.org/10.15517/rbt.v56i4.5759.
Yem IY, Bankole NO, Ogunfowora O, Ibrahim B. Food habit of the catfish Chrysichthys nigrodigitatus (Geoffrey Saint Hilaire, 1808) in Kainji Lake, Nigeria. Nat. Sci. 2009;7:17-22.
Arellano-Martinez M, Ceballos-Vazquez BP. Reproductive activity and condition index of Holacanthus passer (Teleostei: Pomacanthidae) in the Gulf of California, Mexico. Rev. Biol. Trop. 2001;49:939-943.
Haruna M, Bichi AH. Studies on length-weight relationship and condition factor of the cichlids of Tomas Lake, Kano, Nigeria. Biol. Environ. Sci. J. Trop. 2005;2:94-100.
Wiafe G, Frid CI. Marine zooplankton of West Africa. Darwin Initiative Report No. 2001;5:1-120.
Pauly D. Some simple methods for the assessment of tropical fish stock. FAO Fish. Tech. Pap. No. 234. 1983;52.
Edem ET, Patience BO. Food and feeding habits of black spot cat fish (Auchenoglanis biscutatus) from Lower River Benue, Makurdi. Asian Journal of Fisheries and Aquatic Research. 2018;1(3):1-5.
Taiwo IO, Aransiola MO. Length – weight relationship, condition factors and fecundity of Chriysichthys nigrodigitatus and Chrysichthys walkeri in Asejire Lake. In Abstracts Conf. FISON. Lagos, Nigeria. 2001;227.
Oluwarotimi AE, Aghatise EC, Bamikole W. Morphometric, meristics and comparative studies of Chrysichthys nigrodigitatus (Lacepede, 1803) from Lagos, Lekki and Badagry Lagoons, Lagos State, Nigeria. Pakistan Journal of Scientific and Industrial Research. 2006;49 (1):19-25.
Edem ET, Ofunama P, Eyo VO. Length-weight relationship, growth pattern and condition factor of the Silver Catfish Chrysichthys nigrodigitatus (Lacepède, 1803) from Lower River Benue, Nigeria. Asian Journal of Fisheries and Aquatic Research. 2018;1(2):1-8.
Abowei JF, Hart AI. Some morphormetric parameters of ten fin-fish species from the lower Nun River, Niger Delta, Nigeria. Medwell Journals (Pakistan). Research Journal of Biological Sciences. 2009; 4(3):282-288. Available:www.scirp.org/(S(czeh2tfqyw2orz553k1w0r45))/reference/ReferencesPapers.aspx?
Atobatele OE, Ugwumba AO. Condition factor and diet of Chrysichthys nigrodigitatus and Chrysichthys auratus (Siluriformes: Bagridae) from Aiba Reservoir, Iwo, Nigeria. Rev. Biol. Trop. (Int. J. Trop. Biol.). 2011;59(3):1233-1244.
Edem ET, Ofunama P, Eyo VO. Length-weight relationship and condition factor of blackspot catfish Auchenoglanis biscutatus from the Lower River Benue Makurdi, Nigeria. Asian Journal of Fisheries and Aquatic Research. 2018;1(2):1-7.