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Food and Feeding Habits of Campylomormyrus Tamandua in Anambra River, Nigeria

By Animal Research International, University Of Nigeria, Nsukka.

Summary

The food and feeding habits of 417 samples of Campylomormyrus tamandua (Osteichthyes Mormyridae) in Anambra River, Nigeria were studied from October 2002 to March 2004. Fish samples were collected monthly at Otuocha and Ogurugu river ports along the Anambra river using a fleet of gill nets of various mesh sizes, traps and hook and lines. Out of the eight (8) categories ofood consumed, the most dominant group was benthic invertebrates (IFS = 4492) followed by alochthonous invertebrates (IFS = 33.40) whe the least was mud/sand (IFS = 10.02). Variaton in the stomach fullness condition showed that 82 (19.66%) ofthe stomachs studied were empty 40 (9.59%) were full while 295 (7074%) were partially filled Food richness and diet breadth showed no significant difference between the seasons and sex respectively (P > 0.05). The trophicvariations and flexibility in C. tamandua are discussed.
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