Publication Date:
2021-07-13
Description:
The gut length to standard length ratios of twelve fish species from the Ovia and Ikpoba Rivers were calculated to work out their feeding level in the food chain. The mean ratio of five species Brycinus macrolepidotus Smith, 0.9 Parachanna obscura (Gunther), 1.0, Papyrocranus afer. Gunthel; 0.35, and Xenomystus nigri Gunther 0.75, classify them as carnivores. Four species Synodontis eupterus Boulenger; 4.4 S.schall (Bloch and Schneider) 4.8, Tilapia mariae Boulenger, 3.5, and T. tilli (Gervais), 4.7, are herbivores. Three intermediate ratio species B. longipinnis (Gunther), 1.3,Chrysichthys furcatus (Gunther) 1.6, and Clenopoma kingsleyae Gunther, 1.8, are omnivores. The body depth of seven of the species was measured and expressed as percentage of the standard length to ascertain the accommodative capacity of the fish for the gut. In addition a review of culture of snake head fish Parachanna obscura is presented.
Description:
Includes:- 3 tables.;18 refs.
Keywords:
Aquaculture
;
Ecology
;
Parachanna obscura
;
Nigeria
;
Ikpoba R.
;
Nigeria
;
Ovia R.
;
freshwater environment
;
Fishery biology
;
Length
;
Ratios
Repository Name:
AquaDocs
Type:
conference_item
,
TRUE
Format:
application/pdf
Format:
application/pdf
Format:
106 - 112
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