International Journal of Fisheries and Aquatic Studies
2017, Vol. 5, Issue 6, Part E
Growth patterns of two freshwater fish belonging to the genus Schilbe Oken, 1817 (Schilbe mandibularis and S. intermedius) in the estuarine system of Aghien Lagoon, West Africa
Author(s): ASSI Sonan Romuald, Konan Koffi Félix, Aliko N’guessan Gustave, Boussou Koffi Charles, Bony Kotchi Yves and Coulibaly Kalpy Julien
Abstract: Growth patterns of
Schilbe mandibularis and
Schilbe intermedius were assessed using the LWR and the Von Bertalanffy model. Fish samples were collected monthly between June 2014 and May 2015 from artisanal and experimental captures in the Aghien Lagoon. Growth type was determined using the length-weight relationship. Length frequency data were analysed with FiSAT software using the ELEFAN package in order to estimate growth parameters. For both species, the coefficient of allometry (
b) was significantly high than 3 (t test,
p < 0.05) showing a positive allometric growth. Concerning growth parameters, results indicated that the asymptotic length was higher in
S. mandibularis (L∞ = 213.28 mm SL
for
S. mandibularis and L∞ = 203.63 mm SL for
S.
intermedius). However, growth coefficient and growth performance index were higher in
S. intermedius. K = 0.78 year
-1 and Φ'
= 2.50 for
S. intermedius; K = 0.41 year
-1 and Φ' = 2.27
for
S.
mandibularis. Growth modelization revealed 4 and 2 cohorts respectively for
S.
mandibularis and
S. intermedius.
Pages: 331-336 | 1220 Views 238 DownloadsDownload Full Article: Click Here
How to cite this article:
ASSI Sonan Romuald, Konan Koffi Félix, Aliko N’guessan Gustave, Boussou Koffi Charles, Bony Kotchi Yves, Coulibaly Kalpy Julien. Growth patterns of two freshwater fish belonging to the genus Schilbe Oken, 1817 (Schilbe mandibularis and S. intermedius) in the estuarine system of Aghien Lagoon, West Africa. Int J Fish Aquat Stud 2017;5(6):331-336.
