Journal Article
Régime alimentaire et biologie de la reproduction de Stomatorhinus corneti Boulanger, 1899 (Pisces, Mormyridae)
Mahamba Byanikiro, R., Kankonda Busanga, A., Ndjaki Nsila, J. and Micha, J.-C.
Record Number:
5529
Year:
2017
Journal:
Revue d'Ecologie
Pages:
177-191
Volume:
72
Abstract:
This study of the biology of a little known Mormyridae, Stomatorhinus corneti Boulanger, 1899, was carried out in the forest rivers Yoko and Biaro of the basin of the Congo River, Kisangani region. Various fishing techniques have raised 144 specimens of S. corneti. Average Intestinal (LI/LS) coefficient calculated for specimens of S. corneti was 0.56; this allowed us to classify this species among the invertivores. The analysis of stomach contents (135 stomachs) helped identify 19 categories of prey belonging to the groups: animal remains, plant remains, insects, crustaceans, eggs and nymphs. The general diet of this species expressed as a fixed percentage of occurrence shows that individuals of both sexes use the same types of prey in similar proportions. The species S. corneti breeds in April and September. The first maturity size is 80 mm total length. The average number of oocytes is 538 for a total length of 80 mm on average and a weight average of gonads of 0.8 g. The size of the eggs varies from 0.4 to 1.5 mm in diameter.
Times Cited:
1
Relevent Species:
Related Records:
Gunther, A. (1873)
New fishes from Angola
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